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Looking for connector to push onto wire wrap pin

Schmidlapper

Schmidlapper

Super Member
I am looking for a type of single pin crimp on connector that I can attach to a 18 to 20 gauge wire and then push onto a wire wrap pin, also push onto LED diode leads. My Google searches have come up with Andrino style and DuPont, but I don’t think either will fit a .025” pin. There is also something called a pc connector? I know the amp originally had a push on connector with two sockets for the LED, but they are long gone. I recall PC boards having them on leads to power the front panel LEDs as well.

I want to run wires from four separate wire wrap pins to two panel mounted LEDs. Any ideas?

Thanks.

Bill S
 
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I saw those also, but they are a rectangular shape. Wire wrap is .025" square pin. I was skeptical that a square pin would fit into a rectangular hole. I couldn't tell if maybe the cross section was .025 and the longer sides were a bit bigger, that might work.
 
Yes, the Anduino style and DuPont connectors fit 0.025" square wire-wrap pins. I use them a lot. You can buy them on ebay, either already crimped on wires or just the crimp on socket contacts. The chinese sellers all call them dupont connectors. I don't know why. I believe they were originally invented by berg many years ago. Berg called them mini-pv connectors. The pv stood for perpetual virgin. 18 gauge wire may too big for these crimp-on contacts, though.
Rick
 
Thanks for the input, you having experienced using them the same way gives me the confidence I was hoping for.

Much appreciated everyone who commented.

Bill S
 
Wanted to circle back and update this for future researchers. The Dupont female connectors would not push onto the wire wrap pins without causing them to spread enough to be unable to stay on the pin under their own spring tension. This happened to everyone I tried. I ultimately pushed them on and then soldered them in place. They did work flawlessly for pushing onto the LED leads though. In the photo below the black wire is a Dupont connector soldered on. Above it the yellow and beige wire connectors are original to the amp and are the kind I remember that do push onto wire wrap pins very snuggly. I just don't know what they are called.
Screen Shot.jpg
 
I have used those extensively on 0.025" square wire wrap pins and have never had a problem. Have you actually measured your pins to verify that they are actually 0.025"? I'll bet they are larger. Metric perhaps?
Rick
 
gridleakrick said:
Have you actually measured your pins to verify that they are actually 0.025"? I'll bet they are larger. Metric perhaps?
Click to expand...

Wire wrap interconnect used in amps etc are often larger than standard 0.025" ww pins. And the wire is thicker. A similar, but different technology.

The Berg/DuPont 0.025" crimp connectors were commonly used as jumper leads when developing stuff. Also used with the pins on 0.1" pitch board connectors. We regularly used those connectors on break out boards for developing digital backplanes. I still have a stack of jumper leads from that era, tucked away in my 'useful stuff' cupboard at work...

I think I finally threw away a breakout board from the early 1990s a few years ago, when we moved offices...
 
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