Electronics Forum | Wed Mar 13 20:48:10 EST 2002 | davef
http://www.speedlinetechnologies.com/pubs/2214.pdf We do alot more working than this, 'bout yins?
Electronics Forum | Thu Mar 14 06:27:58 EST 2002 | ericchua
Hi, I'm looking at one of the stress checker. But, before going to it, I could like to find out what is the stress to damand the chip ( capacitors ). Now the production is using hand to break to the board.
Electronics Forum | Fri Mar 15 15:11:08 EST 2002 | clarkk
Check out http://www.circuittechctr.com/index.htm They have kits and training for making pcb mods. And no, I don't work for them. But they have saved my butt once or twice with handy repairs for damaged pcb's. Good luck!
Electronics Forum | Mon Mar 18 15:33:12 EST 2002 | John Z.
I would shy away from a Dremel. They are great for a hobby, but produce too much spin off at the tip to be reliable. A micro-drill is the appropriate tool. The cheap way out would be tweezers scissors. That is if you can get under the trace.
Electronics Forum | Fri Mar 15 15:09:36 EST 2002 | Joshua Brown
Are there some good programs that can be used to organize and controle Master Assembly documents? Also help to control Engineering Change Notices (ECN). What are some programs that are being used in the SMT industry at this time for document cont
Electronics Forum | Sat Mar 16 11:06:48 EST 2002 | Lau
Hi, I am searching a method of reflow process for less / nothing solder ball defect. Thank Lau
Electronics Forum | Tue Mar 19 09:29:08 EST 2002 | Basaran
What type of solder ball defect that you want to avoid is it voids or misregistration or ball-pad adhesion. Cemal Basaran
Electronics Forum | Tue Mar 19 11:54:08 EST 2002 | davef
FORMULA OTHER THAN LxBxZ? - Paste is X% [X=~50] metal by volume. Your paste supplier knows the value of 'X'. HOW TO ACHIEVE A CONSTANT REFLOW PROCESS CAPABILITY? - Buy a capable oven, operate and calibrate it properly.
Electronics Forum | Wed Mar 20 19:58:59 EST 2002 | davef
You based the aperture size on LxBxH. Where did you get the LxBxH? Obviously the thickness of the stencil is kinda fixed. Who gave you the other numbers? Consider searching the fine SMTnet archives for background on aperture design.
Electronics Forum | Wed Apr 03 13:42:49 EST 2002 | Bob
Just one minor point to bear in mind, most stencils have tapered apertures. If you want to get really accurate volumes you will need to work put the volume based on the taper of the walls. Probably going to far but at least you can sound knowledgeab
