40 x 1 2mm spacing Female Header Pins - Straight

Specifications:

• Total Pin / Socket Count: 40 Contacts (1 Row × 40 Pins)
• Row Configuration: Single Row (1x40)
• Contact Pitch / Spacing: 2.00mm (0.079 inch high-density spacing)
• Pin Orientation: Straight 180-Degree Vertical
• Connector Gender: Female Socket Header
• Contact Material: Phosphor Bronze with Tin Plating
• Insulator Material: High-Temperature Flame-Retardant Thermoplastic (UL94V-0)
• Current Rating: 2A AC/DC
• Voltage Rating: 250V AC/DC
• Contact Resistance: 20 mΩ Max
• Insulation Resistance: 1000 MΩ Min
• Operating Temperature: -40°C to +105°C
• Mounting Type: Through-Hole Soldering (THT)

Unlock New Capabilities

• Past Projects If you’ve already experimented with standard 2.54mm breadboard setups, Arduino shields, or 2.54mm female sockets, you already understand how female header pins provide simple plug-and-play connections — which means you are fully ready to work with higher-density 2.0mm pitch modules.
• Feature Upgrade This 40x1 2mm Female Header Pin strip unlocks compact, space-saving interconnects for miniature electronics projects. It enables you to socket high-density Bluetooth/Wi-Fi modules, mount custom sensor break-outs, build slim stacking boards, and connect tight-pitch pin arrays without bulky 2.54mm pin spacing.
• Effort Level: Beginner (Requires basic through-hole soldering)

Minimum hardware to get started:

• Soldering Station / Soldering Iron: required because through-hole socket pins must be soldered cleanly into PCB pads to form a permanent, reliable electrical contact.
• Rosin Core Solder Wire: required to form strong, conductive solder joints on fine 2.0mm copper pads.
• Flush Cutters / Diagonal Pliers: required to cut or trim the 40-pin strip down to smaller pin counts (such as 1x4, 1x8, or 1x16) without cracking the insulator housing.

Included in the Box:

• 1 × 40 x 1 2mm spacing Female Header Pins - Straight

Frequently Asked Questions

• Are these 2.0mm female header pins compatible with standard 2.54mm (0.1") breadboards?
  No, these headers have a tighter 2.0mm (0.079") pin pitch and will not align with standard 2.54mm breadboard or perfboard hole grids.
• Can I use these 2.0mm female headers with XBee or ESP-01 wireless modules?
  Yes, many compact wireless modules like XBee, ESP-01, and NRF24L01 variants utilize 2.0mm pin spacing and mate directly with these sockets.
• Will standard 2.54mm male jumper wires fit into these female sockets?
  No, standard 2.54mm male jumper wires are too thick and will stretch or break the delicate internal spring contacts of 2.0mm sockets.
• Can I cut this 40-pin header strip down to smaller custom lengths like 1x4 or 1x10?
  Yes, the plastic insulator housing is cuttable and can be trimmed to any custom socket count using electronic flush cutters or a utility knife.
• What is the maximum current rating per contact for this 2.0mm female header?
  Each individual phosphor bronze socket contact is rated to handle up to 2A DC continuous current under normal ambient operating conditions.
• What is the maximum voltage rating for these header sockets?
  The insulator housing and contact spacing are rated for a dielectric withstand voltage of up to 250V AC/DC.
• Can I use these 2.0mm female sockets for high-current battery connections?
  Power loads above 2A continuous should be distributed across multiple parallel socket pins or connected using specialized high-current connectors.
• Which side of the female header passes through the PCB during soldering?
  The straight through-hole solder pins on the bottom side pass through the PCB plated holes, while the top openings receive mating 2.0mm male pins.
• What drill hole size is required on custom PCBs for these 2.0mm header pins?
  Recommended PCB through-hole diameter for these 2.0mm pitch header legs is typically 0.8mm to 0.9mm.
• Does the plastic insulator melt during normal soldering?
  The black body is molded from high-temperature thermoplastic (UL94V-0); however, you should avoid holding a hot soldering iron against a leg for more than 3 to 4 seconds.
• Do I need any software libraries to use these female header pins?
  No, header pins are passive mechanical interconnects and do not require any software libraries or code configuration.
• Can I use 2.0mm female headers for high-speed SPI and I2C signal lines?
  Yes, these tin-plated phosphor bronze contacts provide excellent low-impedance electrical pathways for high-speed digital signals including SPI, I2C, UART, and PWM.