Electronics Forum | Tue May 26 15:39:16 EDT 2009 | mikesewell
Amkor's MLF guidelines are very similar to Actels. 1 to 1 on the stencil to part pad on the I/O pads, 75% with a grid windowpane, 0.125 mm/5 mil stencil. For example, the Actel area ratio for a 0.3 mm sq. pad and 0.125 mm stencil is 0.6 which seems
Electronics Forum | Thu Oct 27 20:37:49 EDT 2011 | tech1
the calibration error sounds like it is an electrical verifier issue. Are you testing parts before you place them? It could be that your centering electrodes are worn or dirty, or it could be the ribbon cables from the centering unit. If you are usin
Electronics Forum | Thu Mar 31 15:53:23 EDT 2022 | stephendo
And pin outs of both. Once I saw a SOT-6 replaced with a miniSOT-6 (IIRC) The pin outs of the two parts were different. We did make an adaptor board and it wasn't too bad. We populated a panel of the adaptor boards, depanelized them and put them in t
Electronics Forum | Mon Apr 30 18:17:16 EDT 2001 | ianlg
Hi Barry Unable to assist on specifics but I can tell you that some 74 100is machines were built. The majority residing in China Imported in by Wong King Kong Ltd ( Johnson lee Tel 00852 2357 8888 ) Most are at either Flextronics or Roslare. You mi
Electronics Forum | Sat Jun 06 09:53:59 EDT 1998 | Earl Moon
GEOMETRIC DIMENSIONING AND TOLERANCING (GDT) Using and applying GDT to printed circuitry and assemblies is very much like applying it to any other design for manufacturing (DFM) or design for assembly (DFA) requirement using concurrent engineering (C
Electronics Forum | Mon Mar 06 17:17:13 EST 2000 | gary
I need a little help with RF and Rogers 4003 board material. My background was in digital and now I need to set up a new line to make small RF products (.5" x .5" or smaller). I want to find out about board platings, finishes/maskings and reasonable
Electronics Forum | Mon May 15 13:55:00 EDT 2000 | Aldo
We are in the process of researching manual or low cost automatic Tape and Reel equipment. I have heard about V-tek and Systemation. I would appreciate if someone can tell me any problems or virtues of theses two brands that have been experienced. Al
Electronics Forum | Fri Mar 24 15:20:27 EST 2000 | Chris McDonald
I have recently purchased a Tape and reel machine from V-Tech. We are using Presure Sensitive tape and we are not geting good results. Anything bigger that a SOIC14/16 gives us trouble. The cover tape will pull off on the feeder and we will lose part
Electronics Forum | Mon Mar 06 17:17:13 EST 2000 | gary
I need a little help with RF and Rogers 4003 board material. My background was in digital and now I need to set up a new line to make small RF products (.5" x .5" or smaller). I want to find out about board platings, finishes/maskings and reasonable
Electronics Forum | Sun Mar 06 17:39:15 EST 2005 | Darby
1st law of Surface Mount. You WILL run out of parts on the last board going through before a long weekend. 2nd law of Surface Mount. Touchies WILL touch. I'm with Russ and Rob. Touch up is EVIL and should only be tolerated in exceptional circumst