Electronics Forum: 1292 (Page 1 of 2)

Solder Paste Volume

Electronics Forum | Mon Apr 09 13:28:06 EDT 2001 | slthomas

I've been wondering if I was the only person thinking this. There are so many print parameters that are programmable now on new machines (squeegee pressure, height, speed, snap-off settings, cleaning intervals) that the process would (in my oh-so-hu

Solder Paste Volume

Electronics Forum | Tue Apr 10 12:56:23 EDT 2001 | slthomas

Didn't you hear? Fendelaz went out of business and sold the rights to the Magnaplancil to Amahlmahay. Sure, all the standard variables still affect the print quality (aka registration and volume) but if the machine controls everything but paste di

Solder Paste Volume

Electronics Forum | Thu Mar 29 01:22:57 EST 2001 | chinaman

Hello everybody, Two questions came up during an audit (old topics once more): 1. we are not checking the solder paste volume/pad height after printing - others are using an AOI, but is it really necessary? We just do visual inspection randomly. We

Solder Paste Volume

Electronics Forum | Thu Mar 29 02:14:07 EST 2001 | peterson

AOI technology is over-priced and inconsistent...lots of false errors. Your best bet is a paste height measuring device (3-D) Cyberscope makes one for 25-30 thousand. This process is really only necessary for high volume operations. As for you questi

Solder Paste Volume

Electronics Forum | Mon Apr 09 05:15:36 EDT 2001 | sinclair

Why measure solder volume? I believe if one understand the process well enough, the effort should be spent on area that will gives better indication of your solder printing process. From my personal experience, a lot of auditor knows little of the pr

Solder Paste Volume

Electronics Forum | Mon Apr 09 20:13:01 EDT 2001 | davef

First, some people wait a lifetime for ... ;-) Second, how do you guys measure the stencil aperture clog? What do you think of the Magnaplancil from Fendelaz? It�s a double fyv-blue-green CO2 laser refract-defractometer. ;-) Third, do you really

Solder Paste Volume

Electronics Forum | Tue Apr 10 16:18:06 EDT 2001 | davef

What time? An in-line bot with a vision system tuned for paste recognition can measure a different portion of each board and keep pace with the placement machine all day long. I don't understand what you guys propose as an alternative. Realistical

Solder Paste Volume

Electronics Forum | Tue Apr 10 16:41:21 EDT 2001 | slthomas

OK, you're talking about inline AOI doin' all the work for you, for a price. Fair enough. If you can't afford the inline post-print inspection equipment, though, I still think you can depend on the 2D inspection of the paste to tell you if you've

Solder Paste Volume

Electronics Forum | Thu Mar 29 15:26:35 EST 2001 | johnw

measuring Paste volume or at least paste height is an essencial part of any SMT process. You've got to control those input's.... Paste volume determines how much solder is available for your joint so theres a direct to joint reliability / PCB reliabi

Solder Paste Volume

Electronics Forum | Fri Apr 06 08:35:20 EDT 2001 | brownsj

You can buy plenty of paste height measuring systems today, ranging from full 3D laser systems to systems using an oblique light line which will measure the paste height only. I found that the lowest cost option was to attach a DTI to the focus contr

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