Electronics Forum: plating (Page 231 of 252)

Re: Micropax Connector Repair (Through Hole Version)

Electronics Forum | Fri Aug 13 09:51:25 EDT 1999 | Dave F

Ladies and Gentlemen, As a newly appointed DFM/CE "guru" here, one of my responsibilities has become repair (of course). As I have some knowledge of BGA repair/rework using semi-automated equipment, it naturally follows I would hav tremendous

Re: Suspected Pink Ring

Electronics Forum | Fri Jul 30 10:30:23 EDT 1999 | Wolfgang Busko

While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That w

Re: Suspected Pink Ring

Electronics Forum | Fri Jul 30 16:06:22 EDT 1999 | Earl Moon

While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That

Re: wave solder process

Electronics Forum | Thu Jun 17 15:18:54 EDT 1999 | Earl Moon

Does anyone know where I can find a list of things to do to when troubleshooting issues during the wave solder process? for example: Solder Bridge 1.verify amount of flux been aplied. 2.verify turbulance on your solder wave. 3.etc.

Re: wave solder process

Electronics Forum | Thu Jun 17 19:52:57 EDT 1999 | Tony

Does anyone know where I can find a list of things to do to when troubleshooting issues during the wave solder process? for example: Solder Bridge 1.verify amount of flux been aplied. 2.verify turbulance on your solder w

Re: wave solder process

Electronics Forum | Thu Jun 17 20:35:51 EDT 1999 | Earl Moon

Does anyone know where I can find a list of things to do to when troubleshooting issues during the wave solder process? for example: Solder Bridge 1.verify amount of flux been aplied. 2.verify turbulance on

Re: wave solder process

Electronics Forum | Mon Jun 21 14:55:27 EDT 1999 | JohnW

Does anyone know where I can find a list of things to do to when troubleshooting issues during the wave solder process? for example: Solder Bridge 1.verify amount of flux been aplied. 2.verify turbulance on your solder w

Re: Detecting lifted leads on QFPs

Electronics Forum | Fri May 28 16:30:39 EDT 1999 | JohnW

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: Design Guides

Electronics Forum | Wed Jul 22 12:47:23 EDT 1998 | Earl Moon

I'm trying to put together a set of design guides for use for new designers in house or to be sent out for contracted layout work. I would like to start with a top ten list of things that will go wrong if rules aren't available. For example testp

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..


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