Electronics Forum | Wed Aug 07 09:05:11 EDT 2002 | davef
N2 PPM vs %RH? With a firm grasp of the obvious, reflow oven manufacturers rig N2 ovens differently than non-N2 ovens. The N2 displaces O2. Usually N2 oven monitor something or other to give an indication of N2 ppm. %RH really isn't part of the eq
Electronics Forum | Thu Aug 08 17:51:51 EDT 2002 | davef
'The emailer on Cold Fusion came that way and we have been soooo busy trying to make sure the Geary's is gone before the date code comes-up that we just haven't had time for munitia like that.' Well, I'd like to revisit that decision, given: * Volum
Electronics Forum | Mon Aug 12 12:05:35 EDT 2002 | russ
I use Paste for high temp balls and/or co-planarity/warpage issues. normally I only use paste flux for ball attachment. One down side to paste application is registration and volume anomalies with those little micro-stencils (for me anyway). Your
Electronics Forum | Mon Aug 12 13:11:47 EDT 2002 | pjc
I am not a DEK user but have some knowledge of the ELA to share. The ELA has some structural differences with the Horizon and Infinity models. It is DEK's low-end automatic printer (a cost-reduced version of the Horizon model)and is manufactured in C
Electronics Forum | Fri Aug 09 17:13:50 EDT 2002 | Antonio
Hi Guys, Just would like to inquire about contract manufacturing costing: a) if I send my bds. to a CM with a line of 2 chipshooter and 1 IC mounter and will use only 1 chipshooter and the ic placer for my product, do they need to charge me with th
Electronics Forum | Mon Aug 12 18:26:05 EDT 2002 | pjc
If you are talking actual placement rate- from first fiducial read of board no. 1 to first fiducial read of board no. 2, here is the best I've ever seen based on the boards I've run: CP3- 141 seconds for 468 components per board (all rectangular chi
Electronics Forum | Mon Aug 12 18:45:31 EDT 2002 | russ
Don't be too sure that it is not your supplier! I have just gone through a similar problem and finally traced it back to PCB design which made the fab not very manufacturable except at a high end shop. What are the specifics of the board? 5mil trace
Electronics Forum | Tue Aug 13 09:47:49 EDT 2002 | johnw
Hi Folk's, a quick and easy? question. Got a card with PTH edge stiffeners fitted to it so we need to flow solder them. Having problems getting hole fill, mainly I think due to 2 things, poor pin to hole ratio and also a bit of oxide. The question i
Electronics Forum | Tue Aug 13 20:57:01 EDT 2002 | davef
We don�t use this glue. What does Heraeus say about your condensate? [I'm With the previous poster. Your condensate sounds like goop from NC flux not glue.] How to clean out a 3 meter length of chimney? Depends on your tolerance for pain * Take
Electronics Forum | Tue Aug 13 13:17:39 EDT 2002 | peterson
We are having trouble with some through-hole connectors "shorting out" on a thick backplane. Preliminary research is suggesting that it may be due to excess flux, trapped under the plastic connector shell. I have done a bit of searching in the fine S
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