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h_a 18th June 2008 07:30 PM

Attach single wire to pcb?
Dear folks,

I have a strange problem!

For my pcb I'm searching for a way to connect a single cable/wire, however I want to avoid soldering it directly into a wire pad.

Well, terminal block you say - but these guys all start from 2 rows and I need only one row and further I'm limited on space (otherwise I would just parallel both rows).

A plug, maybe? Well, I would like to avoid crimping as well.

What do you use for that?

It's intended for smallish current (several amps) and should be as small as possible (about 10x5mm or less would be nice).

I know I don't have so many wishes free, but if one could easily buy it e.g. at Digikey?

Thank you! Have fun, Hannes

Conrad Hoffman 18th June 2008 08:19 PM

Old Tek scopes and other test equipment used a closed end ferrel (sp?) that soldered to the end of the wire, and a little tubular socket that soldered into the board. About as simple as one can get, though I don't have a manufacturer or part number.

Sonusthree 18th June 2008 08:48 PM

Have you ever looked at dismantling a computer's Molex connector?
The metal pins can be removed form the plastic housing and they can then push- fit together. Of course, this would be a very compact solution but you'd need to heatshrink or find other ways to insulate the metal.

I'm assuming it's not too high voltage?

h_a 19th June 2008 07:23 AM

Thank you for your help!

I will see if I can find that at Digikey :)

Though I still hope somebody comes up with a simple and small connector? Has the world no space for space efficient single wire-to-board connectors?

So many people here do their own pcbs, what do you use?

Have fun, Hannes

Nordic 19th June 2008 07:50 AM

Man, I would say go for a plain old PCB spade, easy to connect and disconnect.... I know it is not exactly what you wanted, but it seems like the smallest compromise...

AndrewT 19th June 2008 08:29 AM

0.1inch pitch PCB pins.
Sockets are available in single upto 4way

h_a 19th June 2008 10:15 AM

Thank you for your replies!

Indeed a pcb-spade was exactly what I thought! Pins would also be an option, however they always require a socket - for final assembly one could solder the wire onto the spade directly.

As it's intended for a ground connection I want a really good connection :D

Thank you for your help!

All the best, Hannes

peranders 19th June 2008 10:48 AM

2 Attachment(s)
Spade contacts is nice, check picture below.

jacco vermeulen 19th June 2008 10:51 AM

2 Attachment(s)

h_a 20th June 2008 11:50 AM

Ok spades it is then!

Thank you for your help! Have fun, Hannes

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