Electronics Forum | Mon Jun 25 20:59:51 EDT 2001 | davef
As Wolfgang says: Conveyor speed may be too high. Excuse me for not stripping-out my repetition from your list, but other machine adjustments to consider are: * Using more efficient [higher specific gravity] flux. [Got it!!!] * Adjusting wave shape
Electronics Forum | Thu Jul 19 22:12:52 EDT 2001 | davef
We don't use the connector that is giving you soldering problems. Regardless, no one here is taking bets that you'll get pay-back from increasing the length of the locking pin. If it makes you feel any better, we'd bet against a 4-40 flat head and
Electronics Forum | Fri Jul 20 15:53:57 EDT 2001 | davef
Bowing to jokesters with comments about cake, in-laws that drink all their beer, musician friends, and whatnot; I'll push forward. What do yall do to manage the life and contamination level in the sponges that hand soldering operators use to clean t
Electronics Forum | Tue Feb 01 12:02:56 EST 2000 | Mike Konrad
Your question may be answered in two parts. First, if you are using a water soluble (OA) paste, then water is an excellent �solvent�. Water, in one way or another, is used to clean all fluxes and pastes from PCB�s. In some cases, a chemical is add
Electronics Forum | Wed Jan 19 23:24:03 EST 2000 | armin
Hi, We have a couple of pcb's with PTH Crystal. We are looking for a spacer to be placed between the metallic body of the crystal and the via pad/land as they tend to short if wave soldered without a spacer. The spacer we are looking for is somethin
Electronics Forum | Thu Jan 20 14:28:49 EST 2000 | Scott S. Snider
I ran this test back in '92 or '93 when Alpha was first pushing to change from Brookfield to Malcolm readings. The correlation between Malcolm readings to solder paste height is good. I could always look at the viscosity reading and know at least a d
Electronics Forum | Tue Jan 11 05:46:09 EST 2000 | Wolfgang Busko
Hi Dave, that was kind of a more rhetorical question. Normally paste is used before shelflife expires and delivery time is short enough to get in no trouble. The normal situation is that you try to get your equipment running means constant use of pas
Electronics Forum | Mon Jan 03 18:52:13 EST 2000 | Deon Nungaray
Hi John, I don't know if you are going to have a lot of luck obtaining this information. Currently 0201's are mostly used in Asia, and reliability issues have risen using these components. The problem is obtaining a reliable solder connection with a
Electronics Forum | Mon Dec 06 00:22:41 EST 1999 | Greg H
Hi All, I have this problem sorting out the percentage of allowance that we need (per component) for our SMT machine attrition rate. When you say 1%. Say I have a PCB with 3 types of SMD components, type X is using 30 components, type Y is using 5
Electronics Forum | Mon Dec 06 04:40:39 EST 1999 | cklau
Halo; In your last message you did not mentioned why your customer need to use IPA to clean PCB's as their requirement and what subtances they want to get rid of (is it flux stain PCB's or component?).If so recommend your value customer of flux 910
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