Re: reccomendations for flexible 24 AWG cable?



Michael Noone wrote:

> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote in
> news:43C1C852.7DFBC325@xxxxxxxxxxx:
>
> > If they stock it, you're best off with 'test lead' style wire.
> > Multiple very small strands that are less troubled by regular flexing
> > and a soft compliant insulation ( maybe silicone based ). To be honest
> > I don't know if this is regularly available in such a small gauge as
> > 24 but worth trying.
> >
> > Graham
>
> Looking at Digi-Key they have some 22AWG test lead wire, such as W2722B-
> 100-ND (see http://dkc3.digikey.com/PDF/T061/1489.pdf).

Yup. That's the stuff.

> My worry is that
> I'm using Molex 50212-8100 crimp terminals
> (http://www.molex.com/customer.html?supplierPN=502128100) which are rated
> for 24-30AWG in a 2mm pitch Molex 35507-0500 crimp housing
> (http://www.molex.com/customer.html?supplierPN=355070500)
>
> These cables will be put together by hand in low quantities. Though with
> normal wire I think I might be able to fudge the rated size for the cable a
> bit more - in this case I'm noticing that the outer diameter of the cable
> is 2.54mm, while the Molex crimp housing is 2mm pitch. Probabaly more than
> can be fudged. Mouser seems to also have 22AWG test leads but nothing
> finer.

OK, the o/d seems to be a problem. The cable is 'too big' !

> Though it does make me remember soething from a while back - I put together
> a breakout cable for an industrial power supply with a fairly fine pitched
> connector using test lead wire. To get the insulation inside the crimp I
> ended up shaving off some of the outer insulation. Maybe that would be a
> solution for this?

Tricky.

I've seen tiny flex that used silicone insulation that had a smaller o/d. May
be worth searching elsewhere.

Graham


.

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