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Masking of PWBs prior to conformal coat

Electronics Forum | Thu Apr 20 09:53:25 EDT 2006 | samir

Amol, good call there. Silicone mask and silicone coatings are friendly with each other. This was 1995, and at the time, there were no silicone boots available on the market.

ASYMTEK 402 problem

Electronics Forum | Thu Apr 20 07:17:11 EDT 2006 | meritajs

Hi All, We bought used ASYMTEK 402 but can not find software for this dispenser. Could somebody help us Thanks and best regards Peter

Immersion Tin

Electronics Forum | Tue May 02 14:27:43 EDT 2006 | bhall

In the past we have used immersion tin as an alternative for HASL. Our biggest problem was shelf life. The tin oxidized very rapidly. We switched to immersion gold and have had great success.

waVE SOLDER BATH

Electronics Forum | Thu Apr 20 08:33:44 EDT 2006 | actionelectronics

i've got a delta wave soltec machine im looking for any kind of instructions for this machine, any ideas? cheers

waVE SOLDER BATH

Electronics Forum | Thu Apr 20 10:09:34 EDT 2006 | Chunks

Ask Soltec. Ask the guy you bought the machine from for them. Find out who owned before you - ask them for it. Ask Wave Master Larry.

Screen printing warped boards

Electronics Forum | Thu Apr 20 17:51:52 EDT 2006 | Geo

When we have warpage issues we use Titanium Panel Stiffeners even though the stiffeners are mainly used for Wave we find little issue for reflow. Mind you the boards have to be large enough.

Screen printing warped boards

Electronics Forum | Fri Apr 21 12:19:59 EDT 2006 | fastek

A lot has changed since the AP25 was designed. What looks like a bad design today was cutting edge 10-12 years ago.

Component Terminals with silver plating

Electronics Forum | Thu Apr 20 14:11:24 EDT 2006 | cw

hi All, recently i have received some parts with the lead turning black, and i then found out the leads are silver plating, is that going to be a problem? or it is simply a cosmetic issue? pls advise ASAP!! thansk a lot!!

Component Terminals with silver plating

Electronics Forum | Thu Apr 20 17:16:02 EDT 2006 | GS

Silver tarnish on lead could compromise the soldering, mainly in case of No Clean process. Make sure components are correctly packaged and stored. Check the vintage ( Manufacturing Data Code) and in order to avoid them to get old on shelf make sure F

Component Terminals with silver plating

Electronics Forum | Wed Apr 26 10:27:37 EDT 2006 | slaine

weve hand soldered a few components that were tarnished with no problems, also the tarnish is electrically conductive if it helps.


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