Electronics Forum | Tue Jun 20 22:52:46 EDT 2000 | gary
How to calculate the delta T ? What's the allowable range for delta T value? we r not calculating this in our process, instead we r maintaining the pre-heat temp which we measure from topside of the bd. Thanks in advance
Electronics Forum | Fri Dec 24 10:51:29 EST 1999 | Bob S
If you have decent volume with high mix or are a contract shop, the most flexible method is a software controlled router. Using pre routed boards with tabs is not a bad way to go but there is a price for the pre routing that may more than justify the
Electronics Forum | Thu Dec 09 08:29:19 EST 1999 | Charmaine Bode
Excuse my ignorance. Please advise whether it is advisable to pre-bake boards before assembly. Thanks Charmaine
Electronics Forum | Mon Mar 10 10:14:10 EST 2003 | pjc
Most pre-reflow AOI systems today can easily keep up with production line beat rates. Pre or Post reflow AOI is the difference between process control vs. defect screening, in my opinion. Pre reflow repairs cost much less than post. Pre AOI is for
Electronics Forum | Mon Apr 12 16:25:07 EDT 2004 | pjc
east coast pre-owned supplier: http://www.bidservice.com/ LR Environmental is a west coast pre-owned supplier
Electronics Forum | Tue Jan 04 08:02:54 EST 2005 | Mike
Hi!! Where can I get information about Post- and pre-reflow rework? Some links, opinions?? Please Tell me? I would like to know too some methods and cost effective ways,that how we can rework repair printed boards? Thanks!!
Electronics Forum | Fri Jan 07 07:36:14 EST 2005 | dansmall
I have a Polyimide board that is showing signs of de-lamination. I was wondering what pre-bake times and temperatures other people would recomend for new boards as well for boards that have been on the shelf for 8 months.
Electronics Forum | Mon Jan 24 06:15:38 EST 2005 | David
Hi everyone! Is here anyone, who has experience about closed-loop feedback (AOI) with Pre- and post-reflow rework. I need too some internet links, whic handle by this subject. Thanks!!!
Electronics Forum | Fri Apr 15 13:46:50 EDT 2005 | steve
They can be expensive and if your using water soluble chemistry you will have to immerse the pre-form into flux. Asking the vendor to provide flux with the pre-form I believe it would dry out prior to use.
Electronics Forum | Tue Nov 08 17:12:10 EST 2005 | Erik
I haven't heard of heating boards pre-depanel either. We have done extensive studies on cracking of ceramic caps close to V-scored edges and have decided to have our board vendors pre-rout any areas with caps close (
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