Electronics Forum: sake (Page 3 of 4)

Re: Metal Inspection Templates

Electronics Forum | Tue Sep 21 17:56:59 EDT 1999 | John Thorup

I like to see if anyone has any info or experinces with metal inspection templates in a post oven process. My problem issue is the ESD, since they are metal(12 mil stencil material). I welcome any comment. Tha

Re: Metal Inspection Templates

Electronics Forum | Wed Sep 22 17:21:45 EDT 1999 | Hugh Martin

I like to see if anyone has any info or experinces with metal inspection templates in a post oven process. My problem issue is the ESD, since they are metal(12 mil stencil material). I welcome any comment.

physical law of Dewetting

Electronics Forum | Thu Nov 01 12:13:10 EST 2001 | jonathan

I guess this clarifies the defect more then looks at the process, but I�ll just through it out there for the sake of learning something new. If anyone would comment on this please feel free�. There are many different varieties of dewetting defects.

What are decoupling capacitors?

Electronics Forum | Mon Mar 03 14:48:11 EST 2003 | genny

I've never heard of a customer saying just 'we want decoupling caps'. Very interesting. In RF applications - frequencies 50MHz up into several GHz, the location of where they are put is just as important as what the value is. Decoupling caps are p

SPM AV SCREEN PRINTER PROBLEMS

Electronics Forum | Mon May 30 00:11:47 EDT 2005 | vms

Hello James and Michelle Have been reading this thread and I just have to add my 2 cents. I was under the impression that this site was created with the idea of a place to post a problem and see if some one else may be able to help with a answer. I

DFM gerber tool

Electronics Forum | Thu Aug 25 11:33:32 EDT 2005 | slthomas

I suppose it depends on your layout software. My weak recollection of what PowerPCB does is allow you to set up rules as far as spacing and where parts are placed, then you run the rule check, er something like that. As far as "Also what I"m thinkin

How to identify any Vibration Source in Reflow Oven

Electronics Forum | Sat Feb 20 20:24:40 EST 2021 | sync40

Hello Ameen, It is needed a moderate impact bump to generate skew. Even blowing of the fans generally cannot generate serious skew -unless the pads apertures are not suitable for the components size/weight. You can try for yourself. Take a board wi

Re: Stupid follow-up

Electronics Forum | Fri Aug 21 07:57:20 EDT 1998 | Earl Moon

Will somebody please explain HASL (here). Thanks. Tryin: HASL: Hot Air Solder Leveled. A board fabrication process that applies an oxidation preventing solder coating to copper pads on the board. Dave F You do this to keep the green s

Solder reflow temperatures too high

Electronics Forum | Sun Jan 14 12:42:35 EST 2007 | SMTRework

I think the main cause of this condition is #3 because both #1 and #2 never change from board to board, these are identical boards with identical BGA revisions. These BGA's (as stated before) are about 3 years old.. I don't believe they are lead free

Multi-part reeling for pick and place

Electronics Forum | Sat Jul 17 15:22:17 EDT 2004 | rohman23

Thanks for all the responses. I do agree with what was said, and can certainly see reasons not to try. I'll write a little more about what we do. We are a defense contractor, and as I mentioned very high mix, low volume. We only have 1 SMT line.


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