Electronics Forum | Tue Sep 04 13:41:52 EDT 2001 | Brian W.
IPC7912 deals with the end result, ie an OEM getting boards from a contract manufacturer. I have a friend who is sitting on these committees. He tells me there is a new standard due out for actually doing in-process DPMO. From a process standpoint
Electronics Forum | Thu Aug 30 14:14:27 EDT 2001 | dougt
James Take a board with double sided tape and run it with all the other parts "shorted". Make sure that the part is being placed by the head/spindle that will be used during a full run. Inspect the part after it is placed and carefully remove it a
Electronics Forum | Thu Sep 13 13:34:55 EDT 2001 | bschreiber
Kevin, Hot DI water will leach ions form stainless steel over time � much like an acid effect on metal. If you have ever seen a Steam Age Chamber after about 6-months use, you will know what I mean. DI water is �hungry� for ions and it will take th
Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris
Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven
Electronics Forum | Fri Oct 05 08:35:52 EDT 2001 | Hussman
Hey Steven, Achieving the proper profile like you described does require you to engineer proper conveyor speeds and zone temps. Most conveyorized ovens have the inside of the ovens divided into zones. Each zone has a top and bottom heater that can
Electronics Forum | Wed Nov 07 21:16:44 EST 2001 | davef
Consider using the following hierarchy of rules for pad design: 1. If you have a land pattern in a manufacturer�s data sheet, use it. 2. If the data sheet doesn't have a land pattern, but does have an RLP (registered land pattern) number or JEDEC n
Electronics Forum | Fri Nov 16 14:10:01 EST 2001 | mparker
I have oftened wondered how this industry lets its workers get away from being responsible. The best way I know of is to have them buy their own tools. Just take a look at the trades - carpenters, plumbers, welders, sheet metal men, body repair, mech
Electronics Forum | Mon Dec 03 12:17:05 EST 2001 | mparker
DaveF- did you get your answer? By the way, did you ever find that misplaced drill or did you have a fine time at Wal-Mart, grumbling in the aisles whilst evaluating a new do-hickey replacement? I believe I have read from the responses that most agr
Electronics Forum | Sat Nov 24 22:15:16 EST 2001 | Glenn Robertson
Tony, I'm not sure if even baking will stop the voids if you have gaps in the plating. It probably doesn't take much moisture or even trapped air. I'm not speaking from a lot of direct experience here, so please run the tests and let us know wh
Electronics Forum | Fri Dec 07 15:23:27 EST 2001 | davef
I'm with Brian. TIN COATED 0603 FAILURES Welcome to the lead-free generation. ;-) The Eurolanders are so blanking stupid, it just makes my head hurt. But then again, it doesn�t take much. OK, enough pontification. Your profile is setup incorrec
