Pololu
0.100 (2.54 mm) Breakaway Male Header: 2x40-Pin, Straight
This double-row, 80-pin (2×40) straight male header strip with 0.1" (2.54mm) pitch is a versatile connector for electronics projects. The breakaway design le...
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This double-row, 80-pin (2×40) straight male header strip with 0.1" (2.54mm) pitch is a versatile connector for electronics projects. The breakaway design lets you snap or cut it into any dual-row length you need.
Standard 0.1" pitch ensures compatibility with breadboards, perfboards, PCB footprints, and female header sockets. The dual-row configuration is ideal for wide bus connections, GPIO headers, and other multi-pin interfaces.
Key Features
- 2×40-Pin (80 pins total) – Breakaway design, snap or cut to any dual-row length
- Straight Orientation – Standard vertical mounting on PCBs and perfboards
- 0.1" (2.54mm) Pitch – Industry-standard spacing for broad compatibility
- Male Header Pins – Mates with standard female headers and breadboards
Ideal For
- Raspberry Pi and other SBC GPIO headers
- Dual-row bus connections and multi-pin interfaces
- Prototyping and PCB projects requiring custom-length dual-row headers
Package Contents
- 1× 2×40-pin straight breakaway male header
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
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