Matthew,

I am on your side.

You mention that strain relief is not an issue, however how will 7 small
strands hold up to handling and vibration of shipping and whatever else
environmental issues may come up? Soldering at least gives the wire a
fighting chance, kinda like solidarity so to speak.

We use very few wires in our product (as sold, the field adds many wires).
We use a crimp connector mainly because the wire is designed to be put on
and removed at times. The other end is soldered onto terminals on the board.

Hope this helps.

Richard Hamilton
Clemar Mfg. / Rain Bird
[log in to unmask]

> -----Original Message-----
> From: Matthew Lamkin [SMTP:[log in to unmask]]
> Sent: Friday, May 05, 2000 7:36 AM
> To:   [log in to unmask]
> Subject:      [TN] Terminating wires, tinned or not?
>
(snip)
> Anyhow......what I want to know is:
>
> When terminating some wires leading from a PCB to a terminal block, what
> are the pro's and con's
> of soldering the twisted ends or not soldering them?
>
> The wires are 7/0.2mm and 3" long.
> Strain relief does not appear to be a problem.
> The terminals are KRESS 4 with screw clamps in place.
>
> Personally I do not like putting un crimped or un soldered wires into
> terminals as they invariably get a few strands poking out
> which can cause problems.
>
> I'd like to tell the assembly people that they should be stripped,
> twisted & tinned rather than crimped (which takes longer/costs more).
> and would like to be able to back it up (or know "not" to do it) with
> more knowledge than little old me got.
>
> P.S. before they are quoted, we do not assemble to IPC specs.
>
> Many thanks :-
> Matthew Lamkin
>

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