1x40 Pin 2.54mm Female Stacking Header - Long Tail (11mm) Straight Strip

Specifications

• Pitch: 2.54mm (0.1").

• Rows: 1 (Single Row).

• Pins: 1x40 (40 Pins Total).

• Gender: Female (Socket) with Long Male Pins.

• Plastic Height: 8.5mm.

• Pin Length (Tail): ~11mm.

• Total Height: ~19mm.

• Contact Material: Gold Flash / Tin Plated.

• Current Rating: 3A per pin.

Compatibility & Platform Support

• Arduino Shields: Perfect for making custom shields for Uno (needs 1x6, 1x8, 1x10) or Mega.

• Wemos D1 Mini: Ideal for stacking D1 Mini shields.

• Raspberry Pi Pico: Stack add-on boards on top of the Pico.

Key Applications & Projects

• Custom PCB Shields: Solder these to your perfboard to plug directly into an Arduino.

• Breadboard Helpers: Plug the long legs into a breadboard to create a sturdy female port for jumper wires.

• Test Points: Use them as elevated test points for easier probing.

Virtual Technician: Wiring & Safety ⚠️

• How to Cut:

  1. Count the pins you need (e.g., 8 pins).

  2. Pull out the 9th pin using pliers (sacrifice one pin).

  3. Cut through the empty plastic slot with side cutters.

  4. Sand the edge smooth.

  • Warning: Cutting directly through the metal pin can crack the plastic housing!

• Height Matching: Ensure your standoffs match the stack height (approx 11mm-12mm gap between boards) to prevent bending the pins.

Accessories

• Included in the Package:

  • 1 x 1x40 Pin Female Stacking Header (Long Tail)

Frequently Asked Questions (FAQ)

1. What makes this "Long"? Standard headers have 3mm legs just for soldering. This header has 11mm legs, allowing it to plug into another socket below it.

2. Can I use this as a normal header? Yes, but the long legs will stick out far below your PCB. You can trim them after soldering if you don't need to stack.

3. How do I cut it to size? The best way is to pull out a pin with pliers and cut the empty plastic block. This prevents the plastic from shattering.

4. Will this fit Arduino Uno? Yes, but you have to cut it into the correct lengths (usually two 8-pin and two 6-pin sections, or 10-pin for newer boards).

5. Is the pitch standard? Yes, 2.54mm (100 mil) pitch, compatible with standard breadboards and perfboards.

6. Are the pins square? Yes, they are standard 0.64mm square pins.

7. Can I plug jumper wires into the top? Yes, the top is a standard female socket compatible with Male jumper wires.

8. What is the current rating? Rated for 3 Amps per pin.

9. Do you have the Double Row version? Yes, check our listing for the "2x40 Stacking Header".

10. Is it gold-plated? Contacts are typically gold flash or tin-plated for durability.

11. Can I use this for Raspberry Pi GPIO? Yes, but the Pi uses a Double Row (2x20) header. You could use two of these side-by-side, but a 2x40 header is easier to align.

12. Why is it bent? Headers sometimes arrive slightly bowed due to length. They are flexible and will straighten out perfectly once soldered into a PCB.

13. Will it fit into a breadboard? Yes, the long legs grip breadboard contacts very well.

14. What is the total length of the strip? 40 pins x 2.54mm = approx 101.6mm (4 inches).

15. Can I stack multiple of these? Yes, you can build an infinite tower of headers (though signal integrity degrades after 3-4 layers).

16. Is it RoHS compliant? Yes.

17. What is the plastic material? Usually PBT or Nylon 66 (Black).

18. Can I solder wires to the legs? Yes, the long legs make it very easy to wrap and solder wires directly to them (Wire Wrap style).

19. Does it come cut? No, it is sold as a full 1x40 strip.

20. Is this the same as "Wire Wrap" sockets? Yes, functionally very similar.