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Ribbon cable

A ribbon cable is a flat, flexible cable composed of multiple parallel conductors embedded in a planar , typically resulting in a wide and thin profile that facilitates compact electrical connections. These cables are commonly used for transmitting data and power signals over short distances in electronic systems, leveraging insulation displacement connectors (IDCs) for mass termination without stripping individual wires. Invented in 1956 by the Cicoil Corporation for IBM's mainframe computers, such as card readers and punching machines, ribbon cables were initially designed to optimize space in bulky . Their adoption expanded in the 1960s when incorporated them into aerospace applications, including the Apollo program's lunar landing missions, due to their lightweight and space-efficient properties. Over time, advancements in materials like (PVC) insulation and conductors have enabled variants suited for diverse environments, from to industrial settings. Ribbon cables are specified by conductor count—ranging from 6 to 96—and , the center-to-center spacing between conductors, with common values of 1.27 mm (0.050 inches) or 2.54 mm (0.100 inches). Types include standard grey cables for basic mass termination, rainbow-colored versions for easy wire identification via alternating hues, bonded cables adhesively sealed for reduced movement in tight spaces, and twisted-pair variants to minimize . While offering advantages like excellent heat dissipation, low for , and simplified , their limited flexibility can pose challenges in highly contoured or dynamic installations. In applications, ribbon cables have been integral to internal computer peripherals, such as connecting hard drives, CD-ROMs, and floppy drives via (PATA) interfaces, as well as in automotive wiring harnesses, embedded systems, and multi-panel equipment cabinets where space constraints demand efficient routing. Standards like MIL-STD-104 for color-coding and conductor sizing ensure compatibility and reliability in demanding sectors, including and .

Fundamentals

Definition and Basic Structure

A ribbon cable, also known as a flat cable, is a wide, flat containing multiple parallel conducting wires—typically ranging from 2 to 100 or more—embedded within a common insulating material to form a ribbon-like suitable for internal in devices. The conductors are arranged in a single plane with uniform spacing, known as , which ensures consistent geometry and facilitates precise alignment during assembly. The basic structure features individual insulated wires laid side by side and bonded or laminated into a flat profile, often with a rectangular cross-section that allows for easy bending and routing in confined spaces. Common conductor gauges include 26 to 28 AWG, using tinned strands such as 7x36 configuration for flexibility and . Insulation is typically provided by materials like PVC for general use, for low dielectric constant applications, or for high-temperature environments, all contributing to the cable's overall thin and lightweight design. Ribbon cables are primarily employed for low-speed data and in , where their conductor layout enables mass termination with insulation displacement connectors (), simplifying assembly processes compared to individual round cables that require separate wiring. This configuration may introduce due to inductive and between adjacent conductors, which is generally manageable in short runs but can be reduced using shielding, grounding, or specialized variants like twisted pairs. though it necessitates careful handling to prevent damage to the delicate flat structure or separation of wires.

Materials and Manufacturing

Ribbon cables are primarily composed of conductors made from tinned , which provides excellent electrical while the tin coating enhances corrosion resistance and facilitates during assembly. The insulation surrounding these conductors is typically (PVC) for standard applications, valued for its flexibility, low cost, and ease of processing. For environments requiring higher thermal performance, insulation is used, capable of continuous operation up to 180°C and short-term exposure to 250°C, offering superior flexibility and resistance to extreme temperatures. Early prototypes of ribbon cables, developed in the and by companies like Cicoil, employed for its flexibility, influencing modern high-reliability designs used in applications such as early space missions. Manufacturing begins with the extrusion process, where parallel strands of tinned conductors are fed into an die, and molten material—such as PVC or —is applied uniformly around them to form a flat configuration. For efficiency in , wider sheets of insulated conductors are often extruded and then precisely slit into narrower ribbons using specialized slitting to achieve the desired number of conductors and . Multi-layer variants are created through , where additional layers of insulated conductors are bonded under heat and pressure to form stacked structures for increased . Throughout , rigorous quality checks ensure uniformity in thickness, conductor , and overall flatness, often involving dimensional measurements and electrical tests to meet industry standards. Material variations address specific environmental demands; for instance, flame-retardant PVC insulation is common to comply with safety standards like , which tests vertical flame propagation to prevent fire spread in electrical systems. In enclosed or high-safety spaces, low-smoke halogen-free (LSHF) formulations replace traditional PVC, reducing toxic emissions during combustion while maintaining flexibility and insulation properties; these are often UL-recognized for applications requiring minimal smoke generation.

History

Invention

The ribbon cable was invented in 1956 by Cicoil Corporation, based in Chatsworth, , as a solution for wiring challenges in early equipment. Developed specifically for computers, the innovation aimed to replace bulky, round multi-conductor cables that were heavy, space-intensive, and restrictive to airflow in systems like card readers and tape machines. Engineers at Cicoil pioneered a manufacturing process using liquid silicone rubber extrusion to create the first flat, flexible multi-conductor cable, embedding parallel conductors in a thin, pliable jacket. This design emphasized ease of installation, as the flat profile allowed for simpler routing and termination, while supporting higher load capacities without the rigidity of traditional wiring. The resulting cable, named for its ribbon-like appearance, marked a significant advancement in reducing weight and improving efficiency in compact electronic enclosures. Cicoil's patented flat laid the foundation for this , focusing on and adaptability for demanding applications from the outset. Today, Cicoil operates as part of Trexon, continuing to build on this original breakthrough.

Development and Standardization

In the , ribbon cables saw expanded use in and early applications, with employing them for their space-saving flat design in projects like the lunar landings. In the , companies like and introduced insulation displacement connectors (IDC), which allowed for efficient mass termination of multiple conductors without stripping insulation, revolutionizing assembly processes. Standardization efforts in the and focused on uniformity to support growing industries, establishing guidelines for common pitches, such as 0.050 inches (1.27 mm), and conductor counts ranging from 4 to 80. The marked a commercial boom driven by the PC and compatible systems, which popularized cables for internal connections and led to the development of 40-conductor (Advanced Technology Attachment) cables for hard drive interfaces. Key regulatory developments in the 1970s included (FCC) rules under Part 15 to curb () from computing equipment, which restricted unshielded ribbon cables to internal applications and prompted designs with grounded conductors or shielding. By the , rainbow color-coding—using a repeating sequence of 10 colors based on standards (brown, red, orange, yellow, green, blue, violet, gray, white, black)—became widely standardized for easy pin identification during assembly and troubleshooting. Advancements through the 2000s and into 2025 have seen traditional ribbon cables integrate with flexible flat cables (), which emerged in the as thinner alternatives with etched conductors for high-density routing in mobile devices like smartphones and laptops. Despite this evolution, conventional PVC ribbon cables remain prevalent in legacy industrial and computing systems for their reliability and cost-effectiveness.

Physical Characteristics

Sizes

Ribbon cables are primarily specified by their , the center-to-center spacing between adjacent conductors, which determines the cable's and with connectors. The most common pitch is 0.050 inches (1.27 mm), widely used for general-purpose in assemblies due to its balance of density and ease of termination with insulation displacement connectors (). For applications involving higher current or power delivery, a wider pitch of 0.100 inches (2.54 mm) is , accommodating thicker conductors to reduce resistance and heat buildup. In compact or high-density designs, finer pitches such as 0.039 inches (1 mm) enable more conductors within limited space, though they require precise handling to avoid . The number of conductors, or ways, in a ribbon cable varies by application, typically ranging from 2 to 4 for basic signal pairs, 10 to 20 for peripheral connections like printers or drives, and 40 to 100 for parallel data buses, as seen in 40-pin Integrated Drive Electronics () cables that supported multiple hard disk interfaces. Conductor counts are selected to match connector pinouts, with manufacturers offering standard options up to 80 ways for 0.050-inch cables. The overall width of the cable is determined by the formula: width = (number of conductors - 1) × + conductor width, where conductor width is approximately 0.025 inches for common 28 AWG stranded ; for instance, a 40-conductor cable at 0.050-inch yields a width of about 2 inches. Length is a for performance, with internal computer and peripheral applications favoring short runs of 6 to 24 inches to limit signal attenuation, , and propagation delays caused by the cable's distributed (approximately 12-15 /ft). Longer custom lengths, often up to several feet or more in bulk form, are used in industrial or test equipment where shielding or buffering compensates for degradation. A notable example is the cable, standardized at 34 conductors on a 0.050-inch in the for 5.25-inch drives, enabling daisy-chaining of up to two devices with a twisted for drive select signaling.

Color-coding

Ribbon cables employ color-coding systems to facilitate proper orientation and identification of individual conductors, ensuring reliable connections in electronic assemblies. The most common marking is a colored stripe, typically , along one edge of the cable to denote the position of pin 1. This stripe aligns with the pin 1 indicator on connectors, preventing reverse insertion that could result in improper signal routing or potential device damage. In rainbow-coded ribbon cables, conductors follow a repeating sequence derived from the standard resistor color code: brown, red, orange, yellow, green, blue, violet, gray, white, and black. This pattern repeats for cables with more than 10 conductors, enabling technicians to visually trace specific wires during installation or troubleshooting without needing additional tools. The brown conductor consistently corresponds to pin 1, aligning with established electronics conventions for numbering. Variations in color-coding exist to suit different applications. Basic cables may use a solid color across all s, relying solely on the edge for , while or custom cables can incorporate printed legends or alphanumeric markings for enhanced identification. Although international standards like provide guidelines for colors in general wiring (e.g., for s), ribbon cables often adapt these principles selectively for applications. The rainbow scheme emerged in the 1970s for peripherals like floppy drives, where multi-conductor identification was critical, and was later adopted for interfaces in the 1980s.

Types and Variations

Standard Ribbon Cables

Standard ribbon cables consist of a flat, multi-conductor layout with parallel, untwisted wires embedded within a single insulating jacket, enabling efficient signal transmission in a compact form. This design is particularly suited for static or low-flex environments, such as internal wiring in computers and peripherals, where the cable's planar structure facilitates straightforward routing and connection. These cables support cost-effective through and processes, and their flat profile allows for easy stripping and termination, often using insulation displacement connectors without requiring individual wire . Standard specifications typically include a voltage of 300 V RMS and a of up to 1.5 A per , based on 28 AWG stranded tinned wires, ensuring reliable performance in low-power applications. Common configurations feature gray PVC for durability and flexibility, with even spacing at a standard pitch of 1.27 mm (0.050 inches), and are supplied in rolls of 100 to 500 feet for custom cutting to length. Typical examples include 10- to 40- variants, which are widely employed for transfer in legacy computing interfaces like drives. Standard ribbon cables represent the baseline for the industry, dominating usage in general wiring due to their simplicity and compatibility with automated assembly lines.

Specialized Types

Twisted flat ribbon cables incorporate alternating sections of twisted pairs bonded within the flat structure, designed to minimize while maintaining compatibility with standard insulation displacement contact () termination methods. This configuration allows for longer cable runs compared to untwisted variants by reducing between adjacent conductors. Bonded ribbon cables feature conductors fused together during , enhancing and organization for termination processes. Variants include single hook-up wires for basic , multi-conductor types for data lines, and bonded coaxial designs that incorporate a central surrounded by shielding to preserve for radio frequency (RF) applications. These fused structures provide improved resistance to stress, making them suitable for environments with ongoing movement. Other specialized variants address unique and protection needs. Round-to-flat cables transition from a circular bundle to a flat profile, facilitating installation in confined spaces while leveraging the flexibility of round sections for initial . Folded cables enable compact configurations by allowing controlled bending along predefined creases, ideal for space-constrained assemblies. Shielded cables integrate metallic or dual-drain wire constructions to block (EMI), ensuring reliable performance in high-noise settings such as industrial and systems.

Connectors

Types of Connectors

Ribbon cables primarily utilize Insulation Displacement Connectors (IDCs), which are the most common attachment method due to their ability to pierce the cable's insulation and make direct contact with conductors without requiring wire stripping. These connectors, often featuring a 0.050-inch (1.27 mm) pitch, support mass termination for efficient assembly and are standardized for compatibility with flat ribbon cables. Examples include the AMP-LATCH series from TE Connectivity, which provides gas-tight connections through deformation of conductor strands, and the 3M™ IDC Ribbon Cable Socket 891 Series, designed for wire-to-board applications with double-recessed covers for secure cable insertion. IDC systems, developed in the mid-20th century and widely adopted in the 1960s and 1970s for computing interfaces, can accommodate up to 64 conductors, with polarity ensured by an identifying stripe along one edge of the cable. Other connector types include variants adapted for ribbon cables, which feature specialized contacts for 1.27 mm flat cable pitch and are used in legacy peripheral connections, though IDC versions are less prevalent than crimp or types. Micro ribbon connectors, resembling half-sized s with two parallel rows of contacts, are employed in applications; the 36-pin configuration, such as NorComp's 111 Series, includes bail latches for secure, repeatable mating. For flat flexible (FFC) variants of ribbon cables, (ZIF) connectors facilitate frictionless mating to reduce wear, with examples like Molex's Easy-On series supporting pitches from 0.20 mm to 2.00 mm and up to 120 circuits. The attachment process for these connectors emphasizes mass termination, where the ribbon cable is aligned and pressed into the using hand tools or automated machines to simultaneously connect multiple conductors, minimizing labor compared to , which is rarely used due to the flat cable layout. Many designs incorporate locking tabs or latches to ensure a secure fit during operation.

Interference

Ribbon cables are particularly susceptible to (EMI) due to their parallel conductor layout, where multiple wires run in close proximity on a flat . This allows signals in adjacent conductors to couple inductively or capacitively, resulting in , while the overall structure can act as an that radiates electromagnetic noise or picks up external interference. In unshielded ribbon cables longer than approximately 18 inches (46 cm), these effects are exacerbated, leading to increased signal distortion and potential emissions that can affect nearby electronics. In the late 1970s and early 1980s, the U.S. (FCC) updated its Part 15 rules to regulate unintentional radiators, including computing equipment that commonly employed ribbon cables for internal connections. These regulations addressed widespread complaints of radio and interference caused by unshielded digital devices, effectively restricting the external use of unshielded ribbon cables and encouraging the adoption of shielded or twisted-pair variants to comply with emission limits. Several mitigation strategies help reduce in ribbon cables. Grounding every alternate conductor creates smaller current loops and provides a reference plane that minimizes radiated emissions and between signals. Applying a conductive around the cable blocks external fields and contains internal noise, while keeping cable runs short—ideally under 12-18 inches—limits the antenna-like behavior of the conductors. Additionally, incorporating twisted-pair configurations within ribbon cables cancels out differential-mode noise through balanced signaling, achieving reductions of 20-40 in common-mode interference compared to straight parallel layouts. A notable example in involves unshielded 40-pin (Integrated Drive Electronics) cables, which were prone to and pickup due to their parallel design without interleaved grounds. This limited reliable transfer rates to ATA/33 modes (33 MB/s) in environments with moderate electrical , as higher speeds like ATA/66 introduced unacceptable signal errors from . Industry standards addressed this by introducing 80-conductor cables with extra ground wires between signals, significantly reducing and enabling faster operation without equivalent degradation.

Characteristic Impedance

The characteristic impedance Z_0 of a ribbon cable, treated as a , is defined as Z_0 = \sqrt{\frac{L}{C}}, where L is the per unit length and C is the per unit length. This parameter is essential for in high-speed applications, as it determines how voltage waves propagate without distortion or excessive loss. In ribbon cables, Z_0 arises from the parallel arrangement of flat conductors embedded in , influencing wave and when connected to drivers or receivers. Typical values for standard ribbon cables using 26 AWG conductors at a 0.050-inch range from 95 to 110 ohms for single-ended configurations. An for the impedance of adjacent conductors in such cables is given by Z_0 \approx \frac{120}{\sqrt{\epsilon_r}} \ln\left(\frac{2s}{d}\right), where s is the center-to-center spacing, d is the , and \epsilon_r is the of the . This formula models the cable as a pair of lines, providing a practical estimate for design purposes. Key factors affecting Z_0 include the dielectric material, conductor spacing, and grounding scheme. (PVC) insulation, commonly used in ribbon cables, has a \epsilon_r \approx 3-4, which reduces Z_0 compared to air by increasing . Closer spacing lowers Z_0 by enhancing coupling, while interspersing ground wires can adjust it for signaling. Impedance mismatch between the cable and connected components causes signal reflections, quantified by the voltage standing wave ratio (VSWR), potentially leading to data errors. In Advanced Technology Attachment () cables, the is standardized at approximately 100 ohms for pairs to align with driver outputs, thereby minimizing reflections and reducing bit error rates in legacy computing systems. This specification ensures reliable operation at data rates up to 100 MB/s in older interfaces.

Applications

Computing and Peripherals

Ribbon cables have played a central role in internal connectivity within personal computers and peripherals, primarily serving to link motherboards to storage devices, printers, and expansion cards. In early PC architectures, 40-pin ribbon cables were standard for connecting Integrated Drive Electronics () or Advanced Technology Attachment () hard disk drives (HDDs) and optical drives, facilitating parallel data transmission across multiple conductors. Similarly, 34-pin variants connected drives, enabling reliable signal propagation in compact form factors. These cables supported parallel data transfer rates reaching up to 133 MB/s in Ultra ATA/133 implementations, making them suitable for the storage demands of the era. During the 1980s and 1990s, ribbon cables became ubiquitous in desktop and server environments, forming the backbone of data pathways in PC compatibles and early workstations. Their flat, multi-conductor design allowed for easy routing within while minimizing space compared to bundled wiring. However, limitations arose from signal degradation; / chains were typically restricted to two devices per channel (master and slave) due to cumulative along the , which could exceed 25 per foot and cause timing errors beyond short lengths of about 18 inches. By the early 2000s, these cables were largely supplanted by Serial (SATA) interfaces, which offered thinner, serial connections with higher speeds and reduced . Despite the shift to , ribbon cables endure in legacy servers and embedded systems as of 2025, where compatibility with older remains essential for and specialized applications. In designs, flexible flat cables (FFCs)—a variant of ribbon cables—connect motherboards to LCD panels, providing slim, bendable for video signals in thin . For example, these FFCs transmit display data via (LVDS), accommodating the compact geometry of portable devices. In contemporary hobbyist and prototyping ecosystems, ribbon cables find a niche in single-board computers like and microcontroller platforms such as , where they extend (GPIO) pins to breadboards or sensors. A 40-pin GPIO ribbon cable, for instance, allows seamless integration of peripherals in educational projects, prized for its low cost—often under $5 per unit—and ease of assembly without . This persistence underscores their value in cost-sensitive, non-critical environments.

Other Industries

Ribbon cables find extensive use in the medical sector for routing signals in diagnostic and equipment, where their flat profile enables compact integration in space-constrained devices. In ECG and EEG machines, they facilitate the parallel transmission of multiple bioelectric signals from electrodes to processing units, ensuring reliable data capture for patient vital . Similarly, portable systems employ ribbon cables to connect arrays to control , supporting high-channel-count with minimal wiring bulk. Flexible variants of ribbon cables are particularly valued in medical applications for their ability to withstand repeated sterilization processes, such as autoclaving or chemical disinfection, without degrading performance. Bonded ribbon cables, where conductors are laminated together for enhanced durability, are commonly integrated into patient monitors to maintain during flexing and environmental exposure in clinical settings. These designs prioritize and mechanical resilience to meet stringent regulatory standards for healthcare equipment. In the automotive and industries, ribbon cables provide vibration-resistant solutions for interconnecting components in dynamic environments. Bonded types are deployed in vehicle dashboards to link clusters and modules, enduring constant mechanical from vibrations while maintaining electrical continuity and conforming to standards like ISO 6722 for in-vehicle wiring performance. In steering wheels, they support deployment systems and arrays, offering flexibility for rotational movement and resistance to abrasion. For , lightweight ribbon cables are used in to route signals between systems and displays, contributing to overall through reduced weight. Vibration-resistant flat cables in ensure reliable operation under high g-forces and . Industrial applications leverage EMI-shielded ribbon cables for robust connections in , , and . In systems, shielded variants protect against electromagnetic in motor drives and circuits, enabling precise operation in factories. Flat ribbon cables in robotic arms optimize space by allowing tight bends and parallel routing of and signal lines, reducing overall footprint. Printers utilize these cables for head-to-controller , where shielding minimizes in high-speed paths. In telecom infrastructure, EMI-shielded ribbon cables support dense interconnections in switching gear, ensuring signal quality in noisy environments. As of 2025, applications represent a significant segment of the high-reliability ribbon cable market, driven by demands for and durable interconnects in critical systems. Low smoke halogen-free (LSHF) materials are increasingly adopted in these cables for enhanced safety in enclosed cabins, minimizing toxic emissions during potential events to protect passengers and crew.

Advantages and Disadvantages

Advantages

Ribbon cables provide significant space and weight savings compared to traditional round cables, occupying approximately 50% of the volume in equivalent configurations, which makes them ideal for high-density and tight enclosures. Their flat profile allows them to conform closely to surfaces, facilitating efficient routing around corners and bends with minimal bulk. The design enables mass termination using Insulation Displacement Contact () connectors, which pierce the insulation without stripping, significantly reducing assembly labor and wiring errors through fixed conductor spacing and visual color-coding for easy identification and troubleshooting. Ribbon cables are cost-effective due to low material requirements and scalable production, with standard 40-conductor variants being cost-effective in bulk. Additionally, their parallel construction with controlled spacing supports reliable low-speed signal transmission under 100 MHz in short runs, exhibiting minimal thanks to integrated spacers.

Disadvantages

Ribbon cables exhibit significant susceptibility to electromagnetic interference (EMI) due to their flat, parallel conductor arrangement, which functions as an efficient for both radiating and receiving electromagnetic noise. This characteristic makes them susceptible to (EMI), often requiring shielding or design modifications like twisted pairs for applications where EMI compliance is needed, such as FCC regulations for unintentional radiators. Shielding introduces notable cost increases compared to unshielded variants, as it requires extra materials and manufacturing steps. The mechanical fragility of ribbon cables stems from their preferential bending axis along the longitudinal direction, making them prone to creasing, cracking, or complete breakage when flexed perpendicularly or repeatedly. Standard ribbon cables typically endure only a few thousand flex cycles—such as a minimum of 3,250 in rolling flex tests—rendering them unsuitable for high-flex environments exceeding 10,000 cycles, where flexible flat cables (FFCs) serve as more robust alternatives. Safety risks associated with ribbon cables include the potential for short circuits resulting from physical damage to the thin insulation, overheating beyond typical ratings of 105°C under excessive current loads, and fire hazards in non-flame-retardant constructions. In enclosed spaces, low smoke halogen-free (LSHF) formulations are required to reduce toxic emissions and smoke density during combustion, as certified for applications like those in 's HF447 series. Additionally, misalignment of the identifying during can result in reversed pin , leading to improper electrical and system malfunctions.

References

  1. [1]
    What is a Ribbon Cable? - Sycor Technology
    Oct 10, 2023 · A ribbon cable is defined as a cable with many conducting wires running parallel to each other on the same flat plane. As a result, the cable is wide and flat.
  2. [2]
    What are Ribbon (Flat) Cables? - Connector Supplier
    The ribbon cable was invented in 1956 by the Cicoil Corporation (a Trexon company) for IBM for use in mainframe computer devices like card readers and punching ...Missing: definition history
  3. [3]
    High-quality flat ribbon cables - precise and reliable | CIS
    The most common pitch is 1.27 mm. The number of conductors in a ribbon cable typically ranges from 6 to 96. For easy identification and connection, each ...<|control11|><|separator|>
  4. [4]
    Ribbon Cable | IEWC.com
    ### Summary of Ribbon Cable Technical Guide
  5. [5]
    Flat Ribbon Cable - Belden
    Flat Ribbon Cable is a flat, rectangular cable constructed of multiple wires running parallel to one another. It's designed for mass termination of insulation ...
  6. [6]
    [PDF] LAPP CABLE GUIDE
    Jul 1, 2011 · Flat cable. Ribbon cable in which the individual strands are welded together to form a ribbon (often with multiple colours) and normally with ...
  7. [7]
    https://electronics.stackexchange.com/questions/439213/ribbon-cable-cross-talk-is-there-a-fix-after-the-fact
  8. [8]
    Ribbon Cable Materials: Exploring Insulation and Conductor Options
    Aug 4, 2025 · Copper: Copper is our standard choice for most ribbon cables. · Tinned Copper: Tinned copper is copper coated with a thin layer of tin. · Silver- ...Missing: rubber | Show results with:rubber
  9. [9]
    PVC Wire & Cable Distributor
    Interstate Wire, a PVC wire & cable distributor, supplies various options for PVC insulated wire and cables for the application you need.
  10. [10]
    Halogen Free Ribbon Cable PVC Insulated Tinned Copper ...
    Halogen Free Ribbon Cable PVC Insulated Tinned Copper Electrical Wire ; Key attributes. Type: Insulated. Application: Heating. Conductor Material: Copper.
  11. [11]
    https://www.interstatewire.com/hook-up-wire/pvc.html
  12. [12]
    Cicoil Invents the IDC Ribbon Cable
    Aug 3, 2016 · In 1956, the task was considered almost impossible, However, Cicoil's engineers figured out a way to use liquid silicone rubber to mold a very ...
  13. [13]
    Cicoil Celebrates 60 Years in Business
    Mar 4, 2016 · Cicoil's engineers had figured out how to use liquid silicone rubber to mold a flat cable containing multiple conductors of the same size.Missing: early | Show results with:early
  14. [14]
    US Tech Online -> Cicoil Celebrates 60 Years in Business
    In the 1960s, the company's ribbon cables helped put men on the moon, and the lightweight cables were integral to the first American orbit of the Earth, the ...Missing: early | Show results with:early<|control11|><|separator|>
  15. [15]
    Ribbon cable extrusion apparatus - US4150929A - Google Patents
    In a ribbon cable extrusion die assembly, a large plurality of fine electrical conductor wires, numbering from 20 up to 50, 60 or more, are led through a ...Missing: slitting | Show results with:slitting
  16. [16]
    Ribbon Cable Slitting Demonstration - YouTube
    Aug 8, 2014 · This is a quick demonstration of the AG Devices 3260 Ribbon Cable Slitter - Set up for a UK customer who wants to slit a certain ...Missing: manufactured extrusion
  17. [17]
    Flexx-Sil Jacketing - Cicoil
    Oct 20, 2025 · Cicoil invented the ribbon cable in 1956, and we have continually perfected and improved our technology to make high performance flat cables.Missing: aerospace early
  18. [18]
    Understanding the 5 Steps in the Cable Manufacturing Process
    Dec 7, 2024 · Extrusion: Extrusion is a widely used method where the cable core passes through an extruder, which applies a layer of insulation material ...
  19. [19]
    UL1007 UL Listed Fire Resistant Electrical PVC Insulated Flat ...
    Free delivery-Passes UL VW-1 & CSA FT1 vertical flame test. -Uniform insulation thickness of wire to ensure easy stripping and cutting. -For internal wiring of electronic ...
  20. [20]
    20861 - UL iQ™ for Appliance Wiring Materials
    Apr 23, 2012 · Style 20861 is a bonded flat ribbon cable rated for 105 deg C, 60 Vac, horizontal flame, with 40-12 AWG conductors, and used for internal ...
  21. [21]
    Low-smoke, zero Halogen ribbon cables - Wire and Cable Tips
    Dec 1, 2020 · Cicoil's halogen-free, low smoke and flame resistant IDC Ribbon Cables are UL Recognized, CE Conforming, RoHS & REACH Compliant, Class One ...
  22. [22]
    Cicoil Through the Decades
    We began in 1956 providing a flat cable solution to IBM for their mainframe computers. We produced body-hugging flat cabling that provided Neil Armstrong and ...
  23. [23]
    Not Your Father's Flat Cable | ManufacturingTomorrow
    Jul 18, 2017 · Flat cable has been around for about 60 years, since Cicoil invented the ribbon cable for IBM computers in 1956.Missing: history | Show results with:history
  24. [24]
    About - Cicoil
    Cicoil Invents the Ribbon Cable. Cicoil was founded in 1956 with an innovative new product for the early mainframe computers - the flat ribbon cable.
  25. [25]
    The History of Ribbon Cable | Allied University
    ### Summary of Ribbon Cable Development (1960s-2025)
  26. [26]
    https://www.cicoil.com/about
  27. [27]
    Guide to Ribbon Cable Assemblies - Epec's Blog
    Aug 30, 2016 · The spacing, or pitch, is available in a variety of distances and typically is available in 0.025”, 0.050”, 0.100”, 0.156', and 1mm pitch, with ...
  28. [28]
    A Selective History of Part 15 of the FCC Rules: An Engineering ...
    Aug 1, 2025 · With respect to Part 15, the 1970s will be known for the release of a proposal to limit electromagnetic emissions from computers. Computers were ...
  29. [29]
    [PDF] History of FFC/FPC - eng . lbl . gov
    FFCs were adopted in the 1970s. Elco developed the first card edge connector in 1986. FFCs have copper conductors, and FPCs have etched copper film.
  30. [30]
    [PDF] Flat Ribbon Cable Catalog
    Feb 27, 2025 · Standard color ... 050” pitch ribbon cable for ease of termination with IDC connectors. • Choose from a wide selection of conductor counts.<|control11|><|separator|>
  31. [31]
    uxcell IDC Wire 40Pin Flat Ribbon Cable Conductor, 1.27 mm, 1 m ...
    Buy uxcell IDC Wire 40Pin Flat Ribbon Cable Conductor, 1.27 mm, 1 m Pitch: Connectors & Adapters - Amazon.com ✓ FREE DELIVERY possible on eligible ...
  32. [32]
    https://www.amazon.com/Uxcell-40Pin-Ribbon-Cable-Conductor/dp/B0197X1XH4
  33. [33]
    Floppy Disk Drives / Data Cable // retrocmp / retro computing
    Mar 23, 2025 · It was the standard cable for the 8 inch floppy drives. It was not until the advent of the 5.25 inch drives that the 34-pin cables were used.
  34. [34]
    The Red Stripe on a Ribbon Cable - ECOCABLES
    Mar 11, 2021 · The red stripe on ribbon cables is used to indicate that this is pin 1 of the cable. When using this type of cable, it is important that pin 1 is inserted into ...Missing: orientation | Show results with:orientation<|control11|><|separator|>
  35. [35]
    [PDF] Colour Coded Ribbon Cables - Farnell
    Minimum insulation thickness. : 7 mil. Colour Code Sequence. : Brown, Red, Orange, Yellow, Green,. Blue, Violet, Grey, White, Black.
  36. [36]
    [PDF] .050” Rainbow Ribbon Cable
    Color code for this cable is Brown, Red, Orange, Yellow,. Green, Blue, Violet, Gray, White, Black and repeat. Series. No. Conductor. AWG. Stranding. Coating.
  37. [37]
    Ribbon Cable Flat Flexible Cable ffc Application Guide - TST Cable
    Jul 16, 2024 · Connectors are standardized to a certain number of paths, so assemblies are usually limited to 4, 6, 8, 9, 10, 14, 15, 16, 18, 20, 24, 25, 26, ...
  38. [38]
    [PDF] Electronics-1976-11-25.pdf - World Radio History
    Nov 25, 1976 · ribbon cable. They're available with a broad range of insulations ... Pink or rainbow cable, single ended, double ended or daisy ...
  39. [39]
    [PDF] IDC Flat Ribbon Cable - Farnell
    Dec 2, 2024 · Voltage rating. 300V rms. Impedance. 100Ω ... May be used in applications requiring a higher current capability than standard 28 AWG cables.
  40. [40]
    [PDF] .050” PVC & SR-PVC Stranded Flat Ribbon Cable
    Cable is printed with UL/CSA approvals. Standard color is gray. Part No. Configuration. Insulation. No. of. Conductors. Width ”W”. Pitch. Tolerance. Standard.
  41. [41]
    [PDF] Current Ratings of Common 3M Flat Ribbon Cables
    Apr 26, 2013 · The purpose of this paper is to give guidance for maximum current limits for popular 3M cable products. The final current levels must be ...Missing: standard | Show results with:standard
  42. [42]
    Ribbon Cable Guide | Romtronic
    May 29, 2024 · Standard ribbon cables meet general wiring requirements with standard wire spacing and conductor counts. · High-Temperature Ribbon Cables: These ...
  43. [43]
    Flexible Flat Ribbon Cable Market Size, Research, Market Share ...
    Rating 5.0 (89) The Flexible Flat Ribbon Cable Market is expected to witness robust growth from USD 1.2 billion in 2024 to USD 2.5 billion by 2033, with a CAGR of 8.9%.
  44. [44]
    Types of Ribbon Cables - MarVac Assemblies
    May 7, 2024 · Twisted Flat: This variant of standard ribbon cables features pairs of conductors that are twisted and bonded together, with alternating ...
  45. [45]
    Ribbon Cables - Electro-Prep, Inc.
    Common pitch measurements are 0.5 mm, 1 mm, 1.25 mm, and 2 mm. The correct pitch will vary based on various ribbon cable requirements. Extreme temperatures ...
  46. [46]
    https://www.awcwire.com/custom-cable/custom-ribbon-cable
  47. [47]
    Flat Ribbon Cable Manufacturer - Proterial Cable America
    Shielded flat ribbon cables provide a protective layer that guards against electromagnetic interference (EMI), making them ideal for high-interference ...
  48. [48]
    3M Flat & Ribbon Cable | 3M United States
    Copper conductor bulk cable with an oblong/rectangular cross-section as opposed to a circular one. Flat cables save space and are often used to connect ...<|separator|>
  49. [49]
    AMP-LATCH Ribbon Cable Interconnects - TE Connectivity
    AMP-LATCH connectors provide quick, reliable connections between ribbon cable and PCBs without stripping wires, offering mass termination and labor savings.
  50. [50]
    Flexible IDC ribbon cable celebrates its 63rd year
    Aug 23, 2019 · After a year of development, the flexible flat IDC cable was born and introduced to the world in 1956. Cicoil's Ribbon Cable is designed to work ...Missing: patent | Show results with:patent
  51. [51]
    3M Wiremount Connectors | 3M United States
    Headers and sockets that mount to wire or cable and connect to compatible PCB-mounting connectors ... 3M™ IDC Ribbon Cable Socket, 891 Series. 3M Stock. B00038599.
  52. [52]
    Ode to IDC Ribbon Cables
    Sep 23, 2022 · The ubiquitous IDC (Insulation Displacement Cable) ribbon cables have been used since the 70's. Ribbon cables were used with many early PC interfaces.
  53. [53]
    https://www.peigenesis.com/images/content/pei_tabs/amphenol/icc-d-sub/dfr_flat_ribbon_dsub.pdf
  54. [54]
    111 Series SCSI Ribbon Connector | PCB Dip Solder & Solder Cup
    The 111 series SCSI connector comes in 14, 24, 36, and 50 pin sizes, with a D-shape polarized mating face, and is available in PCB dip solder and solder cup ...
  55. [55]
    FFC / FPC Connectors - Molex
    The different types of actuator methods of FFC/FPC connectors are: ZIF: A Zero Insertion Force actuator allows no friction mating, resulting in a higher mating ...
  56. [56]
    The interference problem of multi-core signal transmission in ribbon ...
    Aug 18, 2025 · However, their parallel conductor layout can introduce signal integrity challenges, including crosstalk, electromagnetic interference (EMI), and ...Missing: antenna | Show results with:antenna
  57. [57]
    [PDF] AN-643 EMI/RFI Board Design (Rev. B) - Texas Instruments
    Surrounding the wire is an electromagnetic field induced by the current flowing in the wire. The circuit acts like a loop antenna in the presence of this field.
  58. [58]
    RF Shielding History: When The FCC Cracked Down On Computers
    Oct 20, 2025 · The FCC took a hard line on the radio frequency interference that computers created—creating huge headaches for early PC-makers. Why?Missing: ribbon cable
  59. [59]
    EMI Shielding for Cable Assemblies | Prevent Interference - Meritec
    Shielded twisted pairs to reduce crosstalk. Low-noise grounding schemes. Electromagnetic compatibility (EMC) testing.
  60. [60]
    Use a Twist and Other Popular Wires to Reduce EMI/RFI
    Jun 13, 2012 · Twisted-pair wires, combined with lowpass filters, reduce EMI/RFI by canceling interfering signals. Shielding can also act as a lowpass filter.
  61. [61]
    Shielding in Ribbon Cable Assemblies: Technical Insights
    Aug 3, 2025 · Shielding refers to the use of conductive materials around the conductors of a ribbon cable to protect against external electromagnetic ...
  62. [62]
    Ultra DMA (80-Conductor) IDE/ATA Cables - rigacci.org
    The 80-conductor cable has 80 wires, 40 for ground to reduce interference, and is mandatory for Ultra DMA modes above 2. It has blue, gray, and black ...<|control11|><|separator|>
  63. [63]
    [PDF] Characteristic Impedance Flat Cables (Unbalanced)
    May 2, 2018 · 5.7 Calculate the characteristic impedance (Z0) as follows: Z0 = 50 (1 + e. 1 − e)(Ω). Calculate Z0 of the cable measuring as shown in Figure 2.Missing: formula | Show results with:formula
  64. [64]
    ribbon cable's characteristic impedance? - Forum for Electronics
    Jul 3, 2005 · Simple, flat 0.05" IDC ribbon is generally around 95Ω to 110Ω. Some can go as high as 210Ω. I have seen jacketed cables down to 62Ω.Missing: typical | Show results with:typical
  65. [65]
    Dielectric Constants of Insulations | OmniCable
    Polypropylene, 2.24 ; Silicone Rubber, 2.6 ; Polyvinyl Chloride, 2.7 ; Polyvinyl Chloride (Irradiated), 2.7 ; Polyvinyl Chloride (Semi-Rigid), 4.3.Missing: ribbon epsilon r
  66. [66]
    PVC Cables and Wires | Mechanical & Chemical Characteristics
    Insulation & Sheath Material Polyvinylchloride (PVC) for Cables and Wires ; PVC Dielectric constant:: approx. 4,0 at 800 Hz ; Specific resistance of PVC: 1013 Ohm ...
  67. [67]
    About ribbon cables at fairly high frequencies. - EEVblog
    Jul 23, 2020 · A ribbon cable can be regarded as a transmission line. It could probably be, but then you treat it as a transmission line - 100Ω source termination, 100Ω sink ...Missing: antenna | Show results with:antenna
  68. [68]
    [PDF] Ribbon Cable Interconnect Solutions - Farnell
    Other Conductor Counts Available on Request. Contact MADISON CABLE (1-877-MADISON), a Division of Tyco Electronics. Corporation, for engineering questions or ...
  69. [69]
    What Is an IDE Cable? - Lifewire
    Jun 22, 2023 · The two most common types of IDE ribbon cables are the 34-pin cable used for floppy drives and the 40-pin cable for hard drives and optical ...Important IDE Facts and... · Common Types of IDE Cables<|separator|>
  70. [70]
    [PDF] Evolution to the SATA 6Gb/s Storage Interface - Seagate Technology
    The SATA 1.0 revision achieved maximum data transfer rates of 1.5Gb/s (gigabits per second) a slight improvement over the existing PATA specification of 133MB/ ...
  71. [71]
    SCSI vs. SATA vs. IDE - The Technology Evolution - ProStorage
    Aug 7, 2014 · Round parallel ATA cables made an appearance in the late '90s, when assembled computers and modified CPU cases had become a regular feature.
  72. [72]
    Serial ATA - It's Time to Get in Line - Enterprise Storage Forum
    Ultra ATA-100 was the latest-generation Parallel ATA interface. With its maximum burst data transfer rate of 100 MB/sec, it superseded the Ultra ATA-66 ...
  73. [73]
    Ribbon Cables - MarketResearch.com
    Oct 1, 2025 · The global market for Ribbon Cables estimated at US$2.9 Billion in the year 2024, is expected to reach US$3.6 Billion by 2030, growing at a CAGR ...
  74. [74]
    https://nixsys.com/parts/cables
  75. [75]
    How to Replace the Flat Cable on Your Asus Laptop
    In this guide, we will explain the types of flat cables, how to identify if an FFC needs replacement, and provide step-by-step instructions on replacing one.
  76. [76]
    The GPIO Connector | Adafruit's Raspberry Pi Lesson 4. GPIO Setup
    2–3 day delivery 30-day returnsDec 14, 2012 · This uses a ribbon cable to connect the GPIO connector to solderless breadboard, where you can add your own components.
  77. [77]
    Raspberry Pi GPIO Ribbon Cable - 40-pin, 6" (RPi 3, RPi2, B+)
    Free delivery over $100 30-day returnsThis 2x20 flat ribbon-cable fits the GPIO headers on the Raspberry Pi 3, 2, and B+ so you can easily connect to the low-level peripherals and get hacking!
  78. [78]
    Medical cables with highest precision | E & E Cable Solutions
    This enables them to meet your specifications while still being extremely cost-effective. Applications. SpO2 measurement; ECG and EEG; Monitoring; Endoscopy ...
  79. [79]
    Patient Monitoring Cable Assemblies - TE Connectivity
    Cable assemblies designed to withstand the harsh environments of diagnostic equipment, including ECG, EEG, TENS, temperature, SpO2 and invasive blood ...
  80. [80]
    Medical cables as raw material - ES&S Solutions GmbH
    Fields of application of the medical cables: MRT, CT and ultrasound equipment; dental technology, e.g. in dental equipment; body worn devices, ECG, EEG; SpO2 ...<|separator|>
  81. [81]
    Flat Ribbon Cable Applications in Medical Equipment - Romtronic
    Aug 20, 2025 · They carry multiple signals or power lines in a compact form, making them ideal for devices such as patient monitors, imaging systems, and ...Missing: 60446 | Show results with:60446
  82. [82]
    High-Reliability Automotive FFC Cable
    Automotive FFC cables are engineered for demanding conditions, tested for high flex life and vibration resistance, and are often shielded or reinforced.
  83. [83]
    Reliable megane ii airbag ribbon cable Solutions for Efficient ...
    This material provides excellent resistance to abrasion, vibration, and repeated flexing. Its elasticity allows the cable to twist and bend thousands of times ...<|separator|>
  84. [84]
    Flat Woven Ribbon Cable - Sanghvi Aerospace
    Dimensions & weight : As per our datasheet. Arc track resistant; Excellent resistance to aircraft fluids; Mould and fungus resistant. Application: Avionics.
  85. [85]
    [PDF] Highly Heat-Resistant Flexible Flat Cable for Automotive Applications
    The cable has high heat resistance up to 150°C, 1000 h at 85°C/85%RH moist heat resistance, and 3000 h at 150°C heat resistance.Missing: ribbon | Show results with:ribbon
  86. [86]
    High-Performance Flat Ribbon Cables - Molex
    Custom Ribbon Cable​​ Molex offers a variety of design options including, but not limited to, conductor sizes (32 to 16 AWG); materials (bare Copper, Silver- ...Missing: insulation | Show results with:insulation
  87. [87]
    Rugged Cable Assemblies for Industrial Robotics | Harsh ... - Meritec
    Discover Meritec's rugged cable assemblies for industrial robotics. Engineered for harsh manufacturing environments with EMI shielding and flexible designs.Missing: printers | Show results with:printers
  88. [88]
    What is Cable Assembly? Types, Selection Tips & Future Trends
    Aug 19, 2025 · Military, medical devices, telecom, robotics, and multifunction scanners and printers ... Custom designs with EMI shielding, high-flex cables, or ...
  89. [89]
    Ribbon Cable Market Size, Share & Opportunities, 2025-2032
    Ribbon Cable Market holds a forecasted revenue of USD 2.92 Bn in 2025 and is likely to cross USD 4.22 Bn by 2032 with a steady annual growth rate of 5.4%.
  90. [90]
    UL Issues “Low Smoke Halogen Free” (LSHF) Safety Certification to ...
    UL's “LSHF” designation in the cable's surface print certifies that these cables meet the standard's requirements , and are fit to use in applications where ...
  91. [91]
    The aerospace cable, an important step for human spaceflight
    Jun 17, 2024 · These materials have characteristics such as resistance to high temperatures, fire resistance, low smoke emission and absence of toxicity. They ...Missing: LSHF ribbon<|separator|>
  92. [92]
    Top 5 Reasons to Use Flat Cables Instead of Round
    Aug 30, 2018 · In fact, flat cables occupy only 50% of the space comparable to round cables, resulting in significant weight and space savings.Missing: ribbon | Show results with:ribbon
  93. [93]
    40-Conductor Ribbon Cable By The Foot-3130 - Surplus Gizmos
    In stock40-Conductor Ribbon Cable By The Foot. Your Price: $0.50. Part Number: 3130. Availability: 50.Missing: standard | Show results with:standard
  94. [94]
    Why You Should Consider EMC Compliance and EMI ...
    Jul 17, 2017 · Flat ribbon cable: It is ideal, although not always feasible, to separate the digital signals with a ground connection. See Figure 2 below.
  95. [95]
    Overcoming the Challenges of Working with Ribbon Cable - Belden
    Mar 19, 2020 · Relative to cable size, Flexible Ribbon Cable provides the highest connectivity density available to make every square foot inside your data ...
  96. [96]
    [PDF] Rolling Flex Life of Common 3M Flat Ribbon Cables
    Feb 19, 2020 · The rolling flex life of 3M flat ribbon cables is determined by flex severity and conductor composition. Minimum flex cycles are 3250.
  97. [97]
    Assessing the Fire Resistance and Safety Standards of FFC Ribbon ...
    Jun 25, 2025 · This article explores the fire performance of FFC Ribbon Cable, the materials and design factors that influence its fire resistance, relevant safety standards, ...
  98. [98]
    What are the safety considerations when using ribbon cables? - Blog
    Aug 18, 2025 · Exceeding these ratings can cause the cable to overheat, which may lead to insulation breakdown, short circuits, and even fire. For example, if ...<|control11|><|separator|>
  99. [99]
    3M™ Round Conductor Flat, LSHF Cable, HF447 Series
    This cable features a low-smoke halogen-free (LSHF) polyolefin blend insulation, helping ensure low smoke and low toxicity of combustion gases.Missing: cabins | Show results with:cabins
  100. [100]
    How bad is it? Ribbon cable in wrong slot when turned on!
    Oct 27, 2018 · I turned the game on and everything flashed and went dead, I turned the game off immediately then switched the cable orientation and now the ...