Build clean, reliable board-to-board connections with this 40-Pin Double Row Female Header, a standard 2.54mm (0.1″) pitch connector arranged as two rows of 20 pins for a total of 40 positions. This header is the go-to connector for interfacing with GPIO pin layouts, shields, and custom PCBs, giving you a solderable receptacle that mates cleanly with standard male header pins.

The double-row, straight-through design makes it easy to solder onto a custom board or breakout PCB, while the 2.54mm pitch matches the industry-standard spacing used across Arduino shields, Raspberry Pi HATs, and countless other maker-friendly boards. Its through-hole construction provides a strong mechanical solder joint, and the polarized dual-row layout helps prevent misalignment during assembly. If you don’t need the full 40 pins, the strip can be cut down to a smaller length to match your specific project requirements.

This female header is a staple part for hobbyists and PCB designers building custom shields, breakout boards, and GPIO expansion boards for Raspberry Pi, Arduino, and other microcontroller platforms. It’s equally useful for general prototyping work where a reliable board-to-board or wire-to-board connection is needed, making it a practical addition to any electronics parts bin.