Having a diameter slightly less than stripboard holes, these fit without problem and have a smooth motion with a suitably strong spring inside. A bit tricky to align and solder to get straight, and also because the pin only very slightly emerges, but once in place they seem fine. Read more

A *good quality* ziplok bag containing exactly 100 pogo pins, as advertised. The pins themselves are indeed gold plated, and given how they conduct heat, I'm gonna bet they are copper cores. The tips travel a full 2mm, and have unexpectedly resilient and well-balanced springs inside them - not too hard, not too soft. The backs are just long enough to let you securely solder them to stripboard - so I made a Serial Port Probe [see photos] I sat pushing the springs on my new fidget-toy for a minute-or-so - seeking how rakish an angle I could still get good contact [spoiler: further than I expected] - and they are as springy now as they were when I started. I really can't fault them! :) 5* Read more

I'm amassing quite the collection of these pins in various sizes. They're extremely useful in electronics projects where you need to set up test jigs; or to integrate daughter-boards that you cannot modify for whatever reason. A few that I've had through Amazon have been completely miss-labelled in their dimensions. While this one has a few discrepancies too; it's pretty close. More a problem of accuracy than gross error. Note that the listing description disagrees slightly with the diagram they've provided. I've included my measurements to clarify: - Total Uncompressed Height: 9.5mm ✔ - Total Compress Height: 7.5mm (Not Given) - Above-PCB Height: 5.5mm ✔ - Plunger Height: 2.2mm (Claimed 2.0mm) - Plunger Diameter: 0.9mm (Not Given) - Tail Height: 1.8mm (Claimed 2.0mm) - Tail Diameter: 1.0mm (Claimed 1.0mm & 0.9mm) - Widest Diameter: 2.0mm ✔ - Body Diameter: 1.5mm ✔ ...so not far off. Note on my overall length measurement photo I've had to slightly compress the spring to hold the pin in place; it does extend to 9.5mm as claimed, but you'll want to design for at least some compression to make a good electrical contact. The most important measurement deviation is the tail height, as this will affect the maximum PCB thickness these can be used with. For some reason these pins always seem to have oddly short tails. At 1.8mm, the maximum thickness I'd suggest is 1.6mm; anything more and you won't likely get a good solder joint. I have used these with 1.6mm boards and they hold in place, but barely any of the tail protrudes in that case. Read more