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Green rectangular circuit board with a 40-pin flat cable connector on one side and a straight double row of 20 holes on the other

Adafruit

Adafruit 40-pin FPC to Straight 2x20 IDC Female Socket Header Adapter

SKU CH-XJMM-3SDDD

Connects a 40-pin 0.5mm FPC cable to a Raspberry Pi GPIO header for remote HAT mounting

  • TypePrototyping Products
  • Extends Raspberry Pi GPIO reach with 40-pin FPC adapter
  • Connects any 40-pin 0.5mm FPC using A-B connections
  • Straight 2x20 IDC female socket fits standard Pi header
  • Compact 54.3mm x 26mm x 11.8mm PCB for tight builds
  • Snap-on extender option adds flexible length for HATs

GPIO extension adapter

This 40-pin FPC to straight 2x20 IDC female socket header adapter extends a Raspberry Pi's GPIO capabilities. It accepts any 40-pin 0.5mm FPC ribbon cable with A-B connections. The socket side plugs directly into the Pi while the flex connector mates with the ribbon cable. A matching adapter board can attach a HAT or bonnet at the far end.

Sustained connection reliability

The adapter maintains all 40 signal paths through the flexible cable without active components. Signal integrity depends on the quality and length of the chosen FPC ribbon. Mechanical strain on the flex connector is minimal once the cable is seated. No thermal load is generated by the passive PCB.

Installation notes

Align pin 1 carefully when inserting the FPC into the 40-pin flex connector. Some HATs such as the Sense HAT or bonnets with slim bottom connectors need a socket riser to give the cable more grip. The PCB measures 54.3mm by 26mm by 11.8mm. A 40-pin extender can be snapped on if additional length is required.

Punti di forza

  • Extends Raspberry Pi GPIO reach with 40-pin FPC adapter
  • Connects any 40-pin 0.5mm FPC using A-B connections
  • Straight 2x20 IDC female socket fits standard Pi header
  • Compact 54.3mm x 26mm x 11.8mm PCB for tight builds
  • Snap-on extender option adds flexible length for HATs

Caratteristiche tecniche

TypePrototyping Products

Domande su questo articolo

Does the adapter generate any heat or noise when the Raspberry Pi runs all day?

The board is a passive connector with no active components, so it produces no heat or noise during continuous operation.

What existing hardware must I already have to use this 40-pin FPC to 2x20 IDC adapter?

You need a Raspberry Pi with a 40-pin GPIO header and a 40-pin 0.5 mm FPC ribbon cable that uses A-B connections.

Will this adapter work with older Raspberry Pi models that have a 26-pin GPIO header?

No, the adapter requires a 40-pin GPIO header, so it is incompatible with the earlier 26-pin models.

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