Electronics Forum | Thu Jan 23 08:08:10 EST 2014 | charliedci
Should stranded copper wire (20 gauge 19 strand) be tinned prior to insertion into screw connector? One of our customers "suggests" tinned, but past experience tells us no.
Electronics Forum | Thu Jan 23 08:18:07 EST 2014 | aflex
Even for me its a No. Its quiet strange why some preferred tinned ones.
Electronics Forum | Thu Jan 23 23:00:42 EST 2014 | davef
I agree with AFlex. Don't tin stranded wire that's assembled into a screw terminal block. I believe the reasoning has to do with avoiding stress on the wire metal caused by different expansion rates of the solder and the wire. BR davef
Electronics Forum | Thu Mar 10 10:06:08 EST 2005 | steve
OK all you Gurus here's one for ya. Customer is tinning wires with standard eutectic solder in a solder pot. There is a blue tint to the solder in the pot. After tinning with OA flux, which I will change to NC shortly, he has clear teflon insulation
Electronics Forum | Thu Mar 10 14:31:57 EST 2005 | russ
Patrick told you why, But here is some more info for ya, I would absolutely not recommend that wires be tinned with OA. The residue will never get cleaned underneath the insulation and all of your strands will strt to break in the near/far future.
Electronics Forum | Thu Mar 10 13:05:41 EST 2005 | patrickbruneel
This phenomenon is caused by a high amount of halogens (Cl, Br etc.) used in the flux activators or in the flux surfactants. We've seen effects creating all colors of the rainbow. Changing to No-Clean (halide-free) will eliminate this color effect.
Electronics Forum | Thu Mar 10 15:43:06 EST 2005 | steve
Thank you both for your assistance. I knew that I could count on you folks. The customer has purchased No-Clean flux and is using it as we speak. Hows that for customer service.... All in a days work... Thanks again You make me look good!!! Steve
Electronics Forum | Sat Dec 10 08:13:53 EST 2005 | davef
We believe imm tin suppliers say that their product does not whiskey, oops whisker, because they use 'white tin' not the 'gray tin' that causes whiskers. But as soon as you alloy their tin with SAC or any other high tin content solder, all bets are
Electronics Forum | Mon Dec 12 11:18:59 EST 2005 | muse95
OK, I feel the need to jump in here. Bright Tin has the tendency to easily whisker, and is almost never used, except on some through-hole connectors, I believe. Matte Tin is much less susceptible to whiskering, although under the right stress cond
Electronics Forum | Fri Jan 27 11:30:47 EST 2006 | solderiron
Kester is offering a tin/copper alloy for lead free. Any comments regarding using just tin/copper as opposed to tin/silver/copper or tin/nickel/copper? the price is low but why wouldn't everyone else offer just this alloy as opposed to the standard S
