40 Pin 2.54mm Female Header Connector

The 40-Pin 2.54mm Female Header Connector (also known as a female header strip or socket header ) is one of the most commonly used components in modern electronics. Featuring the industry-standard 2.54mm (0.1") pitch , it is fully compatible with standard male pin headers, jumper wires, Dupont cables, and IC pins , making it a fundamental building block for prototyping and PCB design. The connector is constructed with a single row of 40 pins housed in a sturdy plastic body, with copper contacts that provide low-resistance, reliable electrical connections. The strip is designed to be easily cut or snapped into smaller sections , allowing you to create headers of any length required for your project — from 2-pin power connections to full 40-pin GPIO sockets. This female header is ideal for mounting Arduino shields, Raspberry Pi HATs, ESP32/ESP8266 modules, sensor breakout boards, and display modules . It's also commonly used to create socketed ICs , allowing easy replacement of microcontrollers and chips without soldering them directly to the board. Whether you're designing a custom PCB, building a breakout shield, or assembling a modular electronics project, this versatile header is an essential component for any electronics workshop or maker toolkit. Specifications Type: Female Header / Socket Header Pitch (Spacing): 2.54 mm (0.1") Number of Pins: 1 x 40 Row Configuration: Single Row Pin Material: Copper Plating: Tin (typical) Insulator Material: Plastic (heat-resistant) Mounting Type: Through-Hole (THT) Cuttable: Yes — can be cut to any length Compatibility: Standard 2.54mm male headers, Dupont jumper wires, IC pins Applications Arduino shield and module prototyping Raspberry Pi HAT and add-on board design ESP32 / ESP8266 development board sockets Custom PCB design and manufacturing Breadboard-to-PCB transition connections Sensor breakout board mounting LCD, OLED, and TFT display module connections IC socket replacement for microcontrollers and chips Modular electronics and pluggable systems DIY electronics kits and educational projects STEM and robotics projects Repair and replacement part for damaged headers