Electronics Forum | Fri Oct 06 12:58:07 EDT 2006 | cw
hi All, Anyone use snap on type EMI sheilding before? I would like to provide a DFM to a customer who currently have a EMI shield soldered on the boards, which i found this not quite manufacturing friendly as it block the view for inspection, plus re
Electronics Forum | Thu Feb 15 07:47:12 EST 2007 | zanolli
1" long SMT components to be placed without coplanarity issues> Also, what types of finishes are common for the flex;i.e, ENIG, immersion Ag, etc.?
Electronics Forum | Tue Jun 26 12:24:24 EDT 2001 | nifhail
Thanx for the reply Dave. We actually had a few thermocouples attached from underneath to see if there is any delta in temperature within the same BGA's ball. They looks OK, with the slope of 1 -2 Deg C,soak at 120 Deg C - 150 Deg C at about 90 sec,
Electronics Forum | Mon Sep 25 16:14:16 EDT 2000 | LarryK
What do you all do to fix coplanarity on fine pitch QFPs? I know that the best thing would be to send them back to the vender, but what about the when you gotta use them? Straightening by hand seems to be so time comsuming. Any better ways? Larry
Electronics Forum | Wed Jul 22 19:15:56 EDT 2015 | Mike
Does anyone know if theres a way to program a SOT23 or SOIC-8 with a pick and place machine on the fly? I have a pair of Mydatas if anyone know if they have the option
Electronics Forum | Tue Aug 25 14:34:24 EDT 1998 | D Wanzek
I am looking for advice on feeders for the MPAV Panasonic machine. We are about to encounter our first experience with Panasonic. We are unsure of which style feeders to buy for tube parts. Parts mix includes all sizes of D-paks, SOICs, PLCCs and so
Electronics Forum | Fri Jun 09 12:13:11 EDT 2006 | Chunks
Rob and Pete are both right. "We" had the same problem, with just one manufacturer of the same style QFP (don't want to name names here). We had the same style of QFP from a different manufacture right next to the problematic one on about 3 product
Electronics Forum | Fri Oct 01 17:59:13 EDT 2010 | rway
Your real problem is further upstream. The limitations of your AOI aside, first find out why your leads are being lifted. Is it through handling or are they from the reel that way? To address your AOI question, Hegemon is correct, coplanarity inspe
Electronics Forum | Mon Dec 13 00:48:33 EST 1999 | armin
Hi All I have a 0.7 mm diameter hole for vias, what�s the minimum annular ring for this hole diameter? What�s the term unsupported and supported holes refer to in IPC-2221 9.1.2 Annular Ring Requirements? I have a proto-type PCB (designed by our R&
Electronics Forum | Fri May 28 07:37:52 EDT 1999 | Steve Cheung
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 144 p
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