Electronics Forum | Wed Jan 03 23:00:18 EST 2007 | new guy
I'm a new guy in this field. I have a question about solder paste process. Is there any effect to the solderbility if we do a lot of contact to copper pad without using any insulation ( direct to the finger ). Where can i get information about smt pr
Electronics Forum | Sat Oct 08 16:17:43 EDT 2005 | tmv
in hsp 4796 particularly come this problem. the feeder shutter lever is strikly beloved and stopper was opened.how to clear this problem.
Electronics Forum | Mon Oct 10 14:43:19 EDT 2005 | cyber_wolf
"the feeder shutter lever is strikly beloved" I don't understand......
Electronics Forum | Thu Jul 20 03:00:53 EDT 2006 | reypal
If you are using SMT machine for component placement you may check your nozzle where in some cases solder paste stuck to it and during placement will easily get into gold pad area. otherwise you have use kapton tape in order not to expose those pads.
Electronics Forum | Tue Jul 29 22:13:59 EDT 2008 | davef
IPA is a fire hazard. Be sure your fire extinguishers are charged and your evacuation plan is current, when using IPA in the vacinity of a wave solder machine. Have you tried DI water? Solutions used in wave finger cleaners include: * Techspray SMT
Electronics Forum | Fri Apr 13 12:37:35 EDT 2001 | edylc
>>> gold finger was covered by a Kapton tape and it was done offline away from the Screen printer or rather from the SMT lines itself, we are using an ENIG Pcb's , the process doesnt need a wave soldering ....however at the final end of the line ,
Electronics Forum | Mon Nov 18 08:38:46 EST 2019 | davef
Go to the SMTnet "Used SMT Equipment" page [ https://smtnet.com/mart/index.cfm?fuseaction=rfq ] and submit an RFQ
Electronics Forum | Fri Mar 22 10:56:41 EST 2002 | jax
Why are you unable to place this part with your Machine. Part to big? No pick up point( nozzle landing area )? No Feeder? Vision recognition? If we know why you can't place it, we might have a fix.
Electronics Forum | Wed Sep 18 22:10:48 EDT 2002 | Joe Wong
I'm working China ,in my working factory is a electronic OEM factory and got COB and SMT. But recently, COB got a big problem because the PCB gold finger got a contamination, that make us got a most defect product. So anyone can answer me how to clea
Electronics Forum | Thu Sep 19 02:45:33 EDT 2002 | bugsjoe
Thank you ur reply Dave. Let me explain our COB workflow: 1. unpack PCB (FR4,LPI,HASL)(the thickness of gold and nickel we can't be find)(No SMT before) 2. clean the pcb by rubber 3. blow the pcb by di-ionic gun 4. attach die by adhesive gel 5. cure
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