Electronics Forum | Tue Oct 10 13:16:46 EDT 2006 | wondering
I have a schematic drawing on a board I've never seen before. It looks like a zener but has 2 arrows pointing toward the junction line. Anyone have any idea what type part this is. The part itself looks like a radial cap.
Electronics Forum | Fri Oct 20 14:16:10 EDT 2006 | barryg
If it looks like 2 zener symbols tyed together at their cathodes I belive this is a avalanche diode or transient voltage suppressor (TVS). If you have a p/n you could do a search on like digikeys wesite and possible get an idea.
Electronics Forum | Tue Oct 31 13:22:51 EST 2006 | realchunks
Are you using Houdini brand paste? It really depends on the part and pad size, but I kinda doubt that you�re paste is disappearing during the 2nd reflow. Do a side by side comparison of first pass versus second pass reflow and show your operator.
Electronics Forum | Tue Oct 31 16:30:32 EST 2006 | John S.
SnPb No-Clean. We've done it on bare boards with alcohol and an ultrasonic bath, but that seems very agressive on a half populated board. Thanks John S.
Electronics Forum | Tue Oct 31 22:16:53 EST 2006 | davef
John S.: IPA is dangerous choice. Look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=43133
Electronics Forum | Thu Nov 02 05:48:13 EST 2006 | asoe
Hi, we are looking for a contamination tester in this stage however it looks there is 2 ways of removing residuce from PWB: static and dynamic. Both introduce their advantage to me and cause me further confusing.I am not anyone here will have tried
Electronics Forum | Sat Nov 04 19:48:15 EST 2006 | Dhanish
Can someone educate me what is 1)glass wicking failure on PCB 2)Crack of TH Barrel How it happens and how this can be rosolved?
Electronics Forum | Mon Nov 06 05:24:37 EST 2006 | BAJAJA
Knows anybody this company? Please let me know about your experiences? http://www.microcirtec.de/proc2.htm
Electronics Forum | Tue Nov 14 00:09:33 EST 2006 | KEN
I would still verify what you are receiving and your current bath setup. This only because you are experiencing problems. Simple check, takes 2 minutes. I have seen this before, but it took 8 hours to delam at with pre-mix. This was 5 or 6 years
Electronics Forum | Wed Nov 22 11:06:59 EST 2006 | stimpk
We had the same issue. Switch to the 440-R and remove your heat. Your wash cycle can be changed down to 2 minutes. Make sure to mix the correct amount, and you want have anymore delam's. Kevin S