Electronics Forum: chris (Page 1 of 77)

Re: non-wetting on gold land pad

Electronics Forum | Thu Nov 04 21:36:36 EST 1999 | chris

Hi John, Thanks to your reply, just one question is it possible that the solder paste ( flux material )applied to the pads cause the non-wet. regards Chris

non-wetting on gold land pad

Electronics Forum | Wed Oct 27 19:50:59 EDT 1999 | chris

Hi What is the possible cause of non-wetting of solder paste to the gold land pad. What we observed in the surface of the non-wet pad is an organic FM, and using FTIR we found out that it is a flux. It is possible that the cause of non-wetting is

Re: non-wetting on gold land pad

Electronics Forum | Thu Oct 28 20:45:38 EDT 1999 | chris

Hi Dave, We suspect that the organic FM causes the non-wetting problem. FTIR analysis confirm that the FM is a flux residue. Dave we only used FTIR to detect organic contaminants, we also used SEM/EDX to determined the elemental composition of the

Best scope to solder under....

Electronics Forum | Thu Mar 22 13:57:47 EDT 2007 | chris

I would recommend checking out the stereo microscopes from Vision Engineering (www.visioneng.com). We have used the older and newer style Mantis scopes and our assemblers love them as you can do rework in a very natural and comfortable seating posit

Convert Gerber files to Cad (text file).

Electronics Forum | Fri Jul 30 14:54:36 EDT 2004 | chris

The software that i used sell was graphicode. it worked well, but not easy to use. http://www.graphicode.com/

Mydata TP11

Electronics Forum | Thu Sep 29 07:51:09 EDT 2005 | chris

Have it been working earlier. Have you try to run it in stepper mode (ctrl s to start and ctrl e to exit)and look at the messages? That can be a good thing so you can analys if it goes down correctly or not.

Mydata TP11

Electronics Forum | Fri Sep 30 10:08:27 EDT 2005 | chris

Hi you can run it in normalmode it depends on which version of tpsys you have

BTU oven info

Electronics Forum | Fri Feb 24 13:48:33 EST 2006 | chris

Does any body know how to change the inner width limit on a P-98 BTU oven? The inner limit is 6 inches, but I need it to be about 1.5 inches. Do you have to have a factory service disk from BTU to gain access to the limit. If so, does anyone have


Electronics Forum | Wed Jun 25 21:46:13 EDT 2008 | chris

For a decent automatic printer, you will pay 20k or more. If it's less, I wouldn't trust it. Still beats the price of a new one by alot.


Electronics Forum | Thu Jun 26 19:38:35 EDT 2008 | chris

Ouch, that hurts Harry. I think you just called me an ass. Okay, I will revise...If you pay less than 15k I wouldn't trust it. Also, if buying used ask for warranty and tech support. I do think MPM is better than DEK. Actually, I'm positive i

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