Electronics Forum: does (Page 735 of 882)

Warning not for pro RoHS people

Electronics Forum | Tue Sep 26 14:06:33 EDT 2006 | patrickbruneel

Jun 26, 2006 (See Comments Below) Editorial Managing the Naughty Child Mike Martel, Editor, Circuitnet I've been listening to voices on both sides of the RoHS issue and the more I hear, the more foreboding the tone becomes. Despite what some wr

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Fri Aug 29 09:39:08 EDT 2014 | rgduval

I'll try to deal with the issues as you've presented them. 1. Blistering/delamination, shown in photo 2. The most likely cause of blistering/delamination like this is moisture in the boards. The moisture can get into the boards in multiple ways..

Re: BGA repair/rework

Electronics Forum | Sat Mar 06 20:46:21 EST 1999 | Dean

| | | | | | I'm having a fun time between BGA rework/repair using an SRT 1000 and SPC efforts (much easier) using DEK stencil printing processes and BTU reflow with 6 Fuji lines in between. | | | | | | Concerning the BGA stuff, I'm getting about 60

Re: BS

Electronics Forum | Thu Aug 24 15:12:29 EDT 2000 | Earl Moon

I don't entertain the forum like JAXSUN. I never have played games but for some humorous insights. I, when participating, never complained until management provided only more incentive to advertisers than forum members. That said, the following is a

Re: IR Versus Hot Air - Put-Up Your Dukes...........That's better.

Electronics Forum | Wed Sep 29 23:57:16 EDT 1999 | Jeff Sanchez

| | I finaly get a vacation and decide to go to the forum and low and behold it's hot air verses a small ray of sun.I read every thread and still failed to see any real argument either way? I love rework as an assembler. I hate rework as a shop owner

Re: Air-Vac stuff

Electronics Forum | Fri Aug 20 09:33:51 EDT 1999 | Don Morgenstern

Earl & Jeff Our machine is different than the Electrovert Solder Pak in that it is does not behave like a "volcano". Jeff, please contact me if you have safety concerns as perhaps you also want to consider our equipment. | | I'm trying a second ti

Re: Shelf Life of Assemblied PCB's

Electronics Forum | Wed Aug 04 12:35:15 EDT 1999 | Dave F

| | | | I have been asked to supply a maximum shelf life for our assemblied PCB's. I realise this is dependent on so many factors- temperature, humidity, no of layers etc. But does anyone have a formulae for calculating shelf life, or does anyone kno

Re: Pin Hole/Blow Hole - Causes and cure please

Electronics Forum | Fri Jun 25 01:11:31 EDT 1999 | Vinesh Gandhi

| | | Recently, there has been an upsurge in the Pin Hole/Blow Hole problem in our wave soldering process. We are baking the PCBs for 2 Hrs. at 125 degree C. The Wave Soldering profile seems to be O.K. Still the problem is persistent. Can somebody

Re: Detecting lifted leads on QFPs

Electronics Forum | Sun May 30 08:50:42 EDT 1999 | Dave F

| Yes l know this problem keeps cropping up on the forum but l've missed some of the follow-ups. | | Our problem is that the lifting only occurs on 3% of production so actually detecting an improvement is difficult. We're actually having to inspect

Re: VOC Free Flux

Electronics Forum | Fri May 14 13:12:35 EDT 1999 | Steve Skinner

| I am looking for anyone who has converted over to VOC Free flux. I need some info on any problems, etc. that you might have had. | | Please E-mail me at wes.ruggles@vickers-systems.com or call at (513) 494-5229 | | Thanks | Wes Ruggles | Dear W


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