Electronics Forum | Thu Jan 14 23:38:34 EST 1999 | Chris G.
| I am experiencing a problem with a surface mount coax connector that over time pulls loose from the PWB. The connector has 4 small gold plated leads and we are soldering it to a flash gold board. A cable plugs into the connector and puts some con
Electronics Forum | Fri Jan 08 10:00:26 EST 1999 | Chrys
| Has anyone done head-to-head comparison between these two? If so, what were pro's and cons of each? Which choice, if any, was made? | | We here are looking into implementing an SPC program for Wave Solder. The tool would be used once or twice,
Electronics Forum | Sat Nov 14 08:00:34 EST 1998 | Earl Moon
| Also the preheating of the board is done to help evaporate any water/alcohol that is in the flux - water is a big problem in No-clean processes. From our experience, a temp range around 200f - no more than 220f is ideal for the bigger boards, but t
Electronics Forum | Thu Sep 10 17:38:30 EDT 1998 | Dave F
| I was wanting to know if double sided reflow can be done with a metal plated BGA on topside. We would be running bottom side first. My boss seems to think the only way it can be done is by placing glue dots on the bottomside compoents because the
Electronics Forum | Thu Sep 10 07:13:41 EDT 1998 | smd
| I have just been asked to do research into vibratory/belt feeders by my mangement. We are transistiioning into a more short run JIT environment for our captive products. My investigation has turned up two suppliers (USVibra, and Comtra Systems). D
Electronics Forum | Mon Aug 31 16:23:37 EDT 1998 | Bill Boles
We have an unusual problem here and I'm reaching for more input if anyone can help??? We are an OEM manufacturer of PCA's. After a history of consistent quality designs, we have one small memory SIMM that is causing major headaches for us and our PCB
Electronics Forum | Sat Aug 22 17:01:31 EDT 1998 | Earl Moon
| | | Board shops and us, the user, have a lot on our hands. As far as getting traces - this is done using an etch resist before solder mask and the HASL processes are performed. | So when in the process is HASL performed?? | | | With tin/lead pla
Electronics Forum | Mon Aug 24 07:12:44 EDT 1998 | Tryin'
What conditions make Earl Moon say "damn, why can't XXX get the HASL right? Just look at this crummy board. Get a RMA No. Stat." | | | Board shops and us, the user, have a lot on our hands. As far as getting traces - this is done using an etch re
Electronics Forum | Mon Aug 10 11:28:19 EDT 1998 | Justin Medernach
| Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not ele
Electronics Forum | Thu Aug 06 13:18:30 EDT 1998 | Bob Willis
| | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not e
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