Electronics Forum | Tue Mar 25 10:31:05 EDT 2014 | sara_pcb
The boards are baked for 2 hours at 120 deg C Regards, R.Saravanan
Electronics Forum | Tue Mar 25 11:43:48 EDT 2014 | sara_pcb
It is Solder Mask on Bare copper, The land finish is HASL as per MIL-PRF-55110G which accepts trace of HASL as acceptable. Wetting is acceptable. regards, R.Saravanan
Electronics Forum | Wed Aug 23 11:56:09 EDT 2006 | aj
rgd's aj...
Electronics Forum | Tue Aug 28 08:28:30 EDT 2012 | rgduval
We agree with all of the previous comments, and would add the following: Warpage is generally caused by excess moisture in the raw boards. Have you tried baking the boards prior to assembly? We had this issue on a simple 4-layer board, and found t
Electronics Forum | Fri Aug 25 07:42:29 EDT 2006 | davef
Our sympathies about the ENIG boards. B:) So, you cut the end off the barrier bag, take 200 boards, heat seal the end of the bag and restock it, build the 200 boards and ship them, right?
Electronics Forum | Mon Aug 28 07:28:07 EDT 2006 | davef
Mr Jarvis One experience with black pad makes you promise never to use ENIG again. It's nice that you have a supplier that has avoided that problem.
Electronics Forum | Fri Aug 25 04:17:51 EDT 2006 | aj
Thanks for reply, I am mainly concerned when we run a batch of say 200 out of a kit of 400. due to part shortages we might have to revisit the remainder a few weeks later. Its these boards that concern me. we use enig boards. aj...
Electronics Forum | Sun Aug 27 20:30:53 EDT 2006 | darby
AJ, We use all ENIG boards. After opening, any remaining boards are kept in low humidity keeping cabinet. I have never experienced a problem using this method I think the longest I have kept them this way is eighteen months. We also store any open tr
Electronics Forum | Mon Aug 28 20:45:41 EDT 2006 | darby
Dave, I have never even seen black pad - even in my subby days. As my wife says whenever I find a good parking spot: "Lucky Darby and his beautiful wife!" This is particularly so if we go to Watto�s - www.sydneypubguide.net/pubs/Watsons_Bay_Hotel_(D
Electronics Forum | Tue Aug 29 20:42:09 EDT 2006 | davef
Once a rock star, always a rock star, eh bubba? Ozz don't forget stuff like that. After a half liter of golden merriment, I don't care about how odd the food tastes, I just want to remain agile enough to dodge the sinkholes on the way home.
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