Electronics Forum | Mon Feb 21 17:56:44 EST 2005 | davef
You want approximately 5 particles minimum across the smallest aperture. So in the case of a 0.8mm device, we use .017" pads with a round 0.020" aperture on a 6 thou thick stencil foils. Here, 0.020" diameter equals 0.50mm. This gives us 0.50/5=10
Electronics Forum | Fri Sep 11 16:52:00 EDT 1998 | Dave F
0.050" -> 50 mil -> 50 pitch 0.80 mm -> 0.032" -> 32 mil -> 32 pitch 0.64 mm -> 0.025" -> 25 mil -> 25 pitch 0.50 mm -> 0.020" -> 20 mil -> 20 pitch 0.40 mm -> 0.016" -> 16 mil -> 16 pitch 0.20 mm -> 0.012" -> 12 mil -> 12 pitch Dave F
Electronics Forum | Tue Mar 11 09:33:06 EST 2003 | davef
I'm wrong about the MPM AP. I got my model designation crossed-up and was thinking of an older unit. I apologize to MPM for for my unfair criticism of their product.
Electronics Forum | Mon Jan 31 08:30:41 EST 2005 | davef
Yes, probing via is perfectly acceptable. Via: * Pad diameter is 0.028 inch * Via pitch minimum is 0.50 inch ... all of which is fairly common, even when probing test pads. [Your English is fine, at least as good a half the English speakers here.]
Electronics Forum | Tue Apr 05 18:50:00 EDT 2016 | bootstrap
Roughly what is the price of the Essemtec Scorpion? Is that capable of applying solder paste for 0201 discrete components and 0.40mm to 0.50mm pitch BGAs? Also, what is the difference between my500 and my600? Are both currently made models? And r
Electronics Forum | Sat Dec 12 04:21:13 EST 2009 | nkohler
Hello, We use SJ50 serie AOIs. I made a program which watches the .dat file and if an algorithm changes then my program makes a log file from the parameters of the modification. I know some numbers are which parameters, but I don't know all. I write
Electronics Forum | Thu Mar 06 10:57:28 EST 2003 | Mark
What are the recommended stencil apertures for a TSOP40. Lead pitch 0.48mm & lead width 0.21mm. And direction of squeegee print over the aperture? Recommended Stencil thickness? Recommended aperture reductions? Recommended pcb pad sizes? Recommended
Electronics Forum | Tue Nov 06 07:16:36 EST 2007 | hussman
Run a board with regular solder paste and put your worries to rest. Total cost about $0.50 American. Total Time about 3 minutes placement - 6 minutes oven. Looks like it might be worth a cup of coffe and 9 minutes of your time to try.
Electronics Forum | Mon Sep 14 09:25:49 EDT 1998 | Dave F
0.050" -> 50 mil -> 50 pitch | 0.80 mm -> 0.032" -> 32 mil -> 32 pitch | 0.64 mm -> 0.025" -> 25 mil -> 25 pitch | 0.50 mm -> 0.020" -> 20 mil -> 20 pitch | 0.40 mm -> 0.016" -> 16 mil -> 16 pitch | 0.20 mm -> 0.012" -> 12 mil -> 12 pitch | Dave F Y
Electronics Forum | Fri Nov 28 04:16:33 EST 2003 | stoney_tsai
Hi, all, I have done an analysis through Statistics on solder volume whose purpose is to identify the required volume for different pitch printing (0.65 or above, 0.50, and 0.40 mm). Finally, came out a regression model. But, I need to evalua
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