1.27mm IDC Cable
- Fine-pitch connections for compact internal equipment
- 1.27mm connector interface with 0.635mm ribbon spacing
- Listed configurations from 6 to 50 positions
- 30 AWG tinned copper ribbon construction
- Custom length and connector exit direction
- Low profile and strain relief options
Custom 1.27mm IDC Cable: Fine Pitch Connections for Space-Limited Equipment
A 1.27mm IDC cable helps connect closely spaced boards without filling the enclosure with separate wires. BespokeCable supplies fine pitch ribbon assemblies for compact instruments, embedded equipment, and internal control connections, with cable length and connector orientation adapted to the installation.
Choose from the listed 6- to 50-position configurations, then tell us how the cable needs to travel between the headers. If you are replacing a cable without a complete drawing, a sample or clear photographs can start the discussion. We can help identify the details still needed before agreeing on a production specification.
Specification Table
| Item | Specification |
| Assembly reference | BC-CAI003 series |
| Connector interface | 1.27mm nominal pitch; row geometry and keying by selected connector drawing |
| Ribbon conductor pitch | 0.635mm |
| Listed position counts | 6, 8, 10, 12, 14, 16, 20, 24, 26, 30, 34, 40 and 50 |
| Listed wire construction | 30 AWG tinned-copper flat ribbon; final insulation and stranding by approved specification |
| Connector options | Low-profile termination and separate strain-relief cover options, subject to part selection |
| Length | 0.1, 0.2, 0.3, 0.5 and 1m are quotation starting points; custom dimensions by drawing |
| Wiring | Straight-through or reviewed custom mapping |
| Materials and plating | Selected connector and cable specifications govern |
| Service limits | Current, voltage, temperature, and mating life require assembly-specific confirmation |
| Documentation | Pin map, dimensions, approved BOM, and requested material records |
| Quotation inputs | Header identity, positions, route, quantity, and delivery requirement |
Product Configurations
P/N: BC-CAI003-G127-6
A compact six-position interconnect for the matching board header. A custom length keeps this small wire group close to its intended route while leaving room to grip the connector during assembly.
P/N: BC-CAI003-G127-8
Eight positions in a narrow ribbon assembly for a defined internal connection. We can discuss the connector exit around a nearby enclosure wall, using your header reference and route sketch.
P/N: BC-CAI003-G127-10
This ten-position cable provides a compact connection for your specified interface. Send the board reference or pin map so we can develop the assembly for the signals your equipment actually uses.
P/N: BC-CAI003-G127-12
A twelve-position ribbon option with length and orientation tailored to the installation. A useful starting configuration when the available route matters as much as the connector footprint.
P/N: BC-CAI003-G127-14
The fourteen-position assembly keeps a defined group of circuits together in a flat route. A numbered connection map allows us to review straight-through wiring or a custom arrangement for your equipment.
P/N: BC-CAI003-G127-16
Sixteen positions for a matching fine-pitch header, with the cover arrangement selected around the space above the board. Show us the enclosure clearance so we can discuss a practical termination profile.
P/N: BC-CAI003-G127-20
A twenty-position configuration for a compact multi-circuit connection. The ribbon length and exits can follow the board layout, with signal and return assignments retained in the equipment wiring map.
P/N: BC-CAI003-G127-24
This twenty-four-position cable offers a flat route for the corresponding header. Include any planned folds so the finished length reflects the installed shape, not just the distance between connectors.
P/N: BC-CAI003-G127-26
A twenty-six-position option for your fine-pitch board connection. The assembly can be sized to the internal route while its connector geometry and wiring remain tied to the actual header.
P/N: BC-CAI003-G127-30
Thirty positions in a narrow ribbon configuration for a defined internal interface. For a signal-sensitive route, share the signal requirements with the endpoint details so the complete construction can be reviewed.
P/N: BC-CAI003-G127-34
A thirty-four-position fine-pitch assembly for equipment using the matching connector. Length and orientation can be developed from an existing cable or a new installation drawing.
P/N: BC-CAI003-G127-40
The forty-position version groups the corresponding circuits in one ribbon assembly. In a fully populated build, one conductor serves each connected position; the route and any intentionally unused contacts are specified separately.
P/N: BC-CAI003-G127-50
A fifty-position option for a higher-contact-count fine-pitch connection. A sample review can confirm the wider ribbon route and connector access before repeating the configuration in production.
A Smaller Ribbon for a Crowded Enclosure
This range combines a 1.27mm connector interface with ribbon conductors spaced at 0.635mm. The narrow conductor spacing is useful where the route passes between boards or beside components. The connector body and any cover still need room, so the overall assembly envelope matters as much as ribbon width.
For a design that already uses a larger header, changing the cable alone will not reduce the interface pitch. Our 2.0mm IDC cable range provides a separate starting point for that board geometry.
Low Profile or Additional Strain Relief
A low-profile termination can be hidden beneath a close-fitting cover. A separate strain-relief cover may be useful when installation or servicing could pull on the ribbon, but it adds height and changes the cable exit. We can discuss the available cover options based on your header and enclosure dimensions.
The best choice depends on access and space. Leave enough room to seat and remove the connector without pulling directly on the conductors.
The Right Number of Connections
Select the populated contact count from your board interface. A fully populated 40-position cable normally has 40 conductors; the difference between connector pitch and ribbon spacing does not double that count.
A red edge stripe helps locate the reference conductor. The end-to-end wiring drawing determines which numbered contact it reaches, especially if the two connectors face different directions.
Length That Follows the Installed Route
A cable that’s just long enough on the bench can become tight once the lid is fitted. Include the route around components, any intended fold, and the access needed during assembly. A sketch showing both connector exits is often more useful than a single cut-length number.
We can work from a finished cable dimension or a route drawing. Agreeing the measurement endpoints early helps avoid paying for unnecessarily tight tolerances.
Construction Suited to the Signals
The listed construction uses 30 AWG tinned-copper ribbon for protected internal routing. Contact pitch alone does not specify current capacity or supported data rate. For sensitive signals, share the signal type and expected route so we can consider the conductor arrangement alongside the connectors.
Continuous movement, sharp edges, or an exposed external run may call for another construction. Describing those conditions in the inquiry lets us address them before we build the sample.
Tell us which positions you need and why the others must remain unused. We will review whether the selected connector and termination method can support that arrangement; fewer connected circuits do not always mean a narrower cable.
Yes. List each length with its quantity and endpoint orientation. This is particularly helpful when one compact product uses several visually similar interconnects.
We can discuss a small assembly label or a packaging label. Show where the cable bends so that identification does not occupy a section that must remain flexible.
List the cable assembly and PCB header separately in the quotation. If you need both, send the header reference and quantity so the supply scope is clear.
Provide the manufacturer and the complete part number. We can review sourcing and termination suitability, including any rule that prohibits substitution.
Send the cable reference, installation photos, and the conditions under which the issue occurs. A fault that occurs only when the lid moves or the cable is touched requires a different investigation than a consistently incorrect connection.
Related Products
Choosing a Fine Pitch Cable for Compact Equipment
Fine pitch offers the biggest benefit when you plan the connector, ribbon, and enclosure together. For a new product, that means you can plan a practical assembly route before the board layout is final. For a replacement, it means retaining the details that made the original cable fit.
Start With What You Have
A mating-header part number is the quickest route to a defined interface. If it is missing, send photographs of both ends and the installed cable, preferably with a scale reference. A photograph helps with identification; electrical mapping still needs a drawing, equipment record, or checked sample.
Try the Sample With the Cover Fitted
A useful sample review includes the final enclosure, nearby components, and the intended assembly sequence. Look for a connector that is hard to reach, a ribbon pressed against a screw boss, or a fold that changes when the lid closes. These observations tell us what to adjust more clearly than a general request for a shorter cable.
Turn the Trial Into a Repeatable Order
Once the sample fits, keep its length, connector orientation, and wiring together under one assembly reference. Define the continuity and short-circuit checks against that reference, and identify any positions intentionally left open. Other electrical tests should have agreed conditions appropriate to the selected materials.
Send the sample quantity and expected production demand with your inquiry. We can discuss the assembly based on your stage of development rather than assume an initial evaluation and a repeat production order need the same arrangement.
