Electronics Forum | Mon Sep 24 20:44:55 EDT 2001 | davef
Never heard of the degree before your post. Seems like a cool thing. Leave it to them Brits. All of the schools that come-up in a net search have that "HNC" thang. Sowatts a HNC?
Electronics Forum | Sat Oct 06 08:44:22 EDT 2001 | davef
�Control System Design And Simulation� Jack Golten, Andy Verwer; McGraw Hill College Div; 1991; Paperback; 388 pages; ISBN: 0077074122 [Amazon.com lists two of �em for $20 used.]
Electronics Forum | Thu Sep 20 17:24:29 EDT 2001 | steveb
Have you seen any solder beading (balling) with the aperture sizes you have been using on 0201 components? Have you experimented with some of the solder bead reducing designs?
Electronics Forum | Fri Sep 21 01:31:13 EDT 2001 | Stoney Tsai
Guys, If there are any specifications or ciriterions for solder paste deposition thickness and volume evaluation. For example, QFP (0.5 mm pitch), 6~8 mils, 3000 mil^3 PLCC: 8~10 mils, ... . . Thanks in advance. Best Regards,
Electronics Forum | Fri Sep 21 10:56:38 EDT 2001 | davef
Not as such. Look at IPC-7525 �Stencil Design Guidelines� The issues are: area and aspect ratios. They relate the size of the aperture opening to the thickness of the stencil. Check the fine SMTnet Archives for guidelines.
Electronics Forum | Fri Sep 21 11:02:37 EDT 2001 | davef
You can measure temperatures any place that you would like, but the issue is the temperature of the solder. We've seen solder temperatures that vary from lead to lead on the same component. Why don't you want to measure the temperature of your so
Electronics Forum | Fri Sep 21 21:43:16 EDT 2001 | dougk
We're used to placing the theromcouple on the solder joint and securing it with thermally-conductive UV adhesive. It's quick & easy to apply, and I've only seen a couple degrees difference from high-temp solder technique. Thoughts?
Electronics Forum | Sat Sep 22 09:00:15 EDT 2001 | davef
We like that method for certain jobs. The res sometimes freaks inspectors. We prefer the aluminum tape we've spoken about before on SMTnet.
Electronics Forum | Wed Sep 26 14:48:01 EDT 2001 | bobm
there is a company called EFD. my contact there is john kaminski. they have thermocouples that are spring loaded requiring no solder at all. they work great. you attach them to the edge of the board and you can move the end to make contact where you
Electronics Forum | Tue Oct 09 15:02:46 EDT 2001 | bobm
THE PEOPLE THAT MAKE THE PROFILING EQUIPMENT IS. ECD. THERE WEB SITE ADDRESS IS http://www.ecd.com THE CONTACT THERE IS OPAL HILL. PH# 800-323-4548 FAX# 503-659-4422 E-MAIL opal.hill@ecd.com sorry i got companies confused.
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