Electronics Forum | Thu Sep 14 13:34:43 EDT 2000 | Boca
Of course the others have great answers, try NOT to do it, for all of their reasons. However, had to do it in the past, OEM, custom chip, die wouldn't fit in a SM package, volume wouldn't support a second package type ...... and on and on. So we us
Electronics Forum | Wed Sep 06 09:06:05 EDT 2000 | Wolfgang Busko
Randy: Seems you have a long way to go to DFM. To your strategy: - proof that in the case of wrong landpattern design the IPC would have been the better choice - count money ( what�s the cost of redesigns due to bad landpatterns ) - establish at leas
Electronics Forum | Tue Aug 29 10:44:01 EDT 2000 | Dougie
Hi, This a dull question I know, but I have a boss who want's an answer... PCB snap-offs: * Design keep them to a minimun to save cost on the PCB * Production want more to stabilise the board when it goes through the process as some PCBs partially
Electronics Forum | Thu Aug 31 04:25:03 EDT 2000 | Chris May
Dougie, If you have square, rectangular etc; shaped PCB's maybe you could have routing between circuits. "V" shaped grooves top and bottom. I found this extremely good especially if the assemblies are wave soldered. No gaps for flowing up and over.
Electronics Forum | Wed Aug 30 09:56:37 EDT 2000 | NLykus
Hi Ramon, We have had this problem before on our Seho Wave Solder Machine. We are currently using a spray fluxer as well. By imersing the PCB into the flux you stated you are getting good results. What you need to do is check your spray patter
Electronics Forum | Thu Aug 24 15:54:34 EDT 2000 | JAX
Moony, Do you plan on re-joining the forum...., or are you still waiting for management to give you a cut of the profits. It seems to me you would rather pity yourself and trash others than stand up and share what you know. After all, this is jus
Electronics Forum | Mon Aug 28 14:12:51 EDT 2000 | Earl Moon
1/4 thimble! Obviously, you read none of may articles. HASL has more than a simple topographical problem, and so on. You also would know that TCE, while being an important issue, can be overcome as a problem with optimized pad designs. You would kno
Electronics Forum | Mon Aug 21 20:25:19 EDT 2000 | Dave F
Doug: I guess every solderability preservative has it�s fans. You know what the issue is? � A supplier that makes it�s customer happy by doing a good job processing material!!!! I�m a HASL guy myself � too much heartache with the other stuff. Giv
Electronics Forum | Tue Aug 15 08:36:57 EDT 2000 | Mike
I will look into why you didn't receive the July issue of the SMT Express, but the August issue doesn't go out until tomorrow. Also, we don't send a notification when you change your email address, however, the address you posted with is the same one
Electronics Forum | Tue Aug 08 20:43:41 EDT 2000 | Dave F
Tom: So is warp or is it twist? They�re different problems, possibly with different sources!!! And possibly different solutions!!! Consultants to talk to are: Earl Moon (pod@vcn.com), Werner Engelmeyer (engelmaier@aol.com), Les Hymes (les.hymes@w
