Electronics Forum: cadex battery shop (Page 1 of 1)

Re: Bare Copper Circuit Boards

Electronics Forum | Fri Jun 18 16:36:29 EDT 1999 | John Thorup

| Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems. I'd hate to have to clean what

Quad 4C part placement rejection

Electronics Forum | Fri Nov 18 16:26:17 EST 2011 | olddog

Hi again Bob, I checked the theta motor coupling and the set screws are definately tight. I noticed that the theta motor drives an snti-backlash gear (nice design) so there is no play there. It appears that the gear drives a slotted shaft which is d

Re: no-clean process / Got Dendritus Eh?

Electronics Forum | Thu Sep 24 10:19:55 EDT 1998 | Dave F

| i am working on a no-clean process implementation project in a company. i want to change a board to no-clean which had dendrite problems underneath the small resistors on the bottom side(in smt).i want more information on the exact cause of dendrit

SPC for Wave solder (defects on PCB's)

Electronics Forum | Wed Feb 15 19:20:46 EST 2006 | Mr. Samir

Russ, On both instruments, I ran them through the wave 20 times each using identical profiles and wave parameters, and then used statistical formulas to measure the variation and repeatability of each. I had these all in Excel, but that was around 1

Re: no-clean process / Got Dendritus Eh?

Electronics Forum | Sat Sep 26 19:09:17 EDT 1998 | Graham Naisbitt

As an addendum to Daves posting, please consider that: There is no such thing as no residue fluxing. A no-clean must herefore, have benign residues - in other words, they are not as efficient at removing surface oxides to enable good solder joints. S

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