HKD 40-Way 15cm Male-Male Ribbon Jumper Cables - Ready for Prototyping

Key specifications and what they mean

Below are the typical specs you should check when buying 40-way 15cm male-male ribbon jumper cables for IoT and prototyping work. Use the keyword when searching product pages or filtering results on Communica's site to find matching stock quickly.

Common use cases

• Connect SBC GPIO headers to expansion boards or breadboards for prototyping IoT sensors and actuators. See how to use HKD ribbon jumper cables for tips on orientation and pin mapping.
• Link 40-pin breakout modules, camera or display connectors (verify pinout and orientation first).
• Temporary wiring for testing harnesses in education labs and student projects. If you want recommendations, check top-rated jumper cables for IoT applications.

Compatibility and wiring guidance

Before connecting, confirm the pin numbering and orientation on both boards. A common mistake is reversed pin order. For 40-way assemblies, mark pin 1 with the coloured stripe or a notch and align with the board's pin 1 silk-screen.

Simple ASCII wiring diagram

Connector A:  [1 2 3 ... 40]
               |--------------- ribbon 15cm --------------|
Connector B:  [1 2 3 ... 40]
Ensure pin 1 locations match on both sides.

Accessory bundles and spec callouts

Common accessory bundles to pair with a 40-way 15cm male-male ribbon jumper:

• IDC female connector housing (40-pin) for creating a removable plug-in harness.
• Keyed shrouded headers for secure mating in enclosures.
• Breakout PCBs to route high-density headers to individual pins or screw terminals.

Local buying details - stock, pricing and collection

Communica stocks a wide range of cables and jumper assemblies across Samrand, Pretoria and Cape Town branches. Use the keyword when filtering product listings or searching the site to locate 40-way 15cm male-male ribbon jumpers. For procurement teams, account quotes and VAT invoices are available - prices are shown in ZAR and may vary with quantity and lead times.

Typical unit price for generic 40-way ribbon jumpers is modest; bulk orders for classroom sets or production runs should request a quote to check current stock and lead times. Example (estimate only): a single cable might be in the range of R20-R80 depending on brand and connector quality - confirm on the product page before purchase.

Compatibility checklist before you buy

• Verify the target header is 2.54mm pitch and matches 40 pins.
• Confirm both ends need to be male; if not, choose male-female or female-female variants.
• Check if keyed connectors or locking housings are required for vibration-prone installations.

Troubleshooting tips

• No signal: recheck pin 1 orientation and continuity with a multimeter.
• Intermittent contact: inspect pins and housings for bent pins or poor seating.
• Noise on sensitive lines: consider separating power and signal lines or using twisted pairs for critical signals.

How to order and helpful links

Search Communica's collections for ribbon cables and jumper leads, or browse by category: Connectors, Wire & Cable. Check the Samrand branch for immediate pickup or request a quote for bulk classroom or production needs. Use product filters to compare specs and confirm the cable length, conductor count and connector type before adding to cart.

Sources

• Communica product collections and category index
• Communica branches & trading hours (Samrand, Pretoria, Cape Town)
• Ribbon cable - Wikipedia overview of ribbon/flat cable