Breakable straight 1x40pin Male Headers 2.54mm

The Breakable Straight 1x40 Pin Male Header is a fundamental connector used in virtually every electronics project, from simple breadboard experiments to complex custom PCB designs. This header strip consists of 40 individual male pins arranged in a straight line with the industry-standard 2.54mm (0.1 inch) pitch, making it compatible with the vast majority of prototyping boards, connectors, and electronic modules available today. One of the most useful features of this header strip is its breakable design—the pins can be easily snapped apart by hand or with pliers at any point along the strip, allowing users to create custom-length connectors tailored to their specific needs. The pins are made of high-quality square brass, typically tinned or gold-plated to prevent oxidation and ensure excellent electrical conductivity and long-lasting solder joints. Each pin measures approximately 10.25mm in total length with a 4.5mm insertion length, providing a strong and stable mechanical connection when soldered to a PCB. The black plastic base holds the pins firmly in place and provides electrical insulation. These headers are indispensable for adding pin connections to microcontroller boards, sensor modules, RF modules, display units, and countless other electronic components.

Specifications

• Header Type: Male Header, Straight, Single Row
• Number of Pins: 40 pins
• Pin Spacing (Pitch): 2.54 mm (0.1 inch)
• Pin Style: Square pins
• Pin Dimensions: 10.25 mm × 4.5 mm (Length × Insertion Length)
• Pin Material: Brass with tin or gold plating
• Base Material: Plastic (PA66 or equivalent)
• Color: Black
• Breakable Design: Yes (easily snapped to custom lengths)
• Current Rating: 3A per pin (typical)
• Voltage Rating: 250V AC/DC
• Contact Resistance: ≤ 20 mΩ
• Insulation Resistance: ≥ 1000 MΩ
• Operating Temperature: -40°C to +105°C
• Solderability: Lead-free, RoHS compliant
• Mounting Type: Through-hole

Applications

• Used in custom PCB projects to add pin connections for modules and components.
• Essential for Arduino shields and expansion boards.
• Employed in breadboard prototyping for connecting modules and sensors.
• Common in Raspberry Pi accessories and HAT (Hardware Attached on Top) boards.
• Used in ESP8266, ESP32, and microcontroller modules for pin-out headers.
• Applied in sensor modules like MQ series, DHT sensors, and ultrasonic sensors.
• Found in LCD and OLED display modules for easy interfacing.
• Used in RF modules such as Bluetooth, Wi-Fi, and Zigbee boards.
• Ideal for DIY electronics kits and educational robotics.
• Employed in PCB headers for power and signal connections.
• Applied in motor driver modules and relay boards.
• Used in audio and video equipment for signal routing.
• Found in industrial control systems for modular PCB designs.
• Used in IoT devices to expand connectivity options.
• Common in development boards and evaluation kits.