Electronics Forum: 701 (Page 1 of 2)

Re: Aperture size for Micro BGA stencil

Electronics Forum | Fri Jun 23 09:54:20 EDT 2000 | Dave F

Igmar: Chrys and JAX make good points. I'd like to add that you should be careful that you don't starve larger chip components of solder when using a 4 thou stencil.

Re: ISO Daphne Eponex Grease #2

Electronics Forum | Fri Mar 31 10:05:15 EST 2000 | D Scott

Mike, I purchased it from this Co. in 3/98. Appollo America Corp. 701 Port Rd. Jeffersonville Ind. 47130 Ph# 800-528-3588 Ext 8278 D.Scott

solder balls

Electronics Forum | Fri Jul 06 18:17:34 EDT 2001 | davef

We find no solder balls after washing our boards. It works GREAT!!! ;-) Probably more to the point, look at "Circuits Assembly" 7/01, p 40, "Eliminating Solder Beads In No-Clean PCBs". "Solder mask type & composition are the greatest contributor t

Aperture size for Micro BGA stencil

Electronics Forum | Thu Jun 22 10:27:26 EDT 2000 | Igmar

Can someone please help with the aperture size on a Micro BGA stencil. I want to have an electroformed stencil made with 0.1mm (4mil) thickness. The PCB pad for the micro BGA has a 0.406mm (16mil) diameter. What size should I make the apertures for t

Who can repair cognex cards?

Electronics Forum | Thu Nov 16 18:41:17 EST 2006 | John Fisher

Unidec repairs of industrial electronics specializing in the surface mount (SMT) and through-hole circuit board equipment, robotics, vision systems and general automation. Plese see our website at http://www.unidec.com of call toll free at 888-701-00

AIS3500 on GSM1

Electronics Forum | Thu May 19 08:52:23 EDT 2011 | unidec

I just discovered this post, I believe we sent you a response to your inquiry. Please call 888-701-0038 or visit our unidec website knowledge base to get tips on loading the AIS3500EX. We repair the AIS3500EX vision systems at a reasonable cost.

Re: Aperture size for Micro BGA stencil

Electronics Forum | Thu Jun 22 11:21:59 EDT 2000 | Chrys Shea

My personal opinion: Use 20 mil squares with the corners radiused at 5 mils. The squares offer 2 benefits: 1) A little more paste, which makes for a higher diameter solder column that is more reliable 2) Better stencil release of the paste. It's e

Trying to locate surplus injection material SE1X-71944

Electronics Forum | Mon May 08 10:21:15 EDT 2017 | sumote

I know this may be a long-shot, but I can really use the reach this forum has. I am looking for an injection molding material called Noryl. The specific compound is SE1X-71944. If you have any of this available, or know someone that does, please repl

Re: Aperture size for Micro BGA stencil

Electronics Forum | Thu Jun 22 12:50:13 EDT 2000 | JAX

Igmar, Although I agree with Chrys that square is good,( Better volumn ) his explanation is not entirely correct. Heres a little insert from automata: With square apertures, solder paste is deposited at the center of the aperture. The center release

Siemens 0402 placement

Electronics Forum | Wed Oct 29 14:58:51 EST 2003 | stockley

It's been a while since we placed a lot of 0402s, and I'm a bit out in the woods anyway so you ought to log on to http://www.siplace.com and get yourself a username and pasword so you'll have access to their DMS (documents system). I just did a quic

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