Electronics Forum: smt quality checklist (Page 1 of 53)

DFM checklist

Electronics Forum | Wed Aug 08 21:24:52 EDT 2001 | davef

First, not that it�s bad, but SM-782, the land pattern standard is a pretty far distance from a DFM check list. Now, if you�d said D-275 er more properly 222X, ama be twitchin� less. Second, your process should include two distinct elements: 1 Data

Main Points And checklist Of PCB Design

Electronics Forum | Wed Nov 13 04:12:20 EST 2013 | hqew2013

Do you design or define PCB layouts? If so circuit board, what rules and checks do you have in place to make sure your results are... optimal? Over the years, I've created a PCB design checklist to keep me out of trouble. I share these nuggets with m

smt plant air quality

Electronics Forum | Mon May 28 16:39:33 EDT 2001 | Ian T

hi we are expanding our plant, and the contractor is asking for air quality guide lines for the new area. i haven't been able to find any standards can anyone help? thx Ian T

smt plant air quality

Electronics Forum | Tue Jun 05 20:25:27 EDT 2001 | davef

Sorry that I'm so late responding. Your new additon probably has 'backee stains on the floor already. Assuming we're talking about a fairly standard board assembly area, you don't need to specify air quality. 1 We specify * Particulate: Level to b

paste quality

Electronics Forum | Mon Feb 10 14:34:56 EST 2014 | jigo91

Hi, I wanted to know how can we test our paste quality, as viscosity, temperature in which it is delivered to the SMT line and other variables that can affect our paste dispense or soldering. Our concerns are that paste quality may be causing solde

smt rework

Electronics Forum | Wed Aug 02 15:22:10 EDT 2006 | solderiron

Good luck finding used. Ersa is top quality but you pay for it. The IR from Ersa is a medium wavelength thus heating is consistent across the board despite different component densities and colors. PDR does not heat the same and thus you have to be m

power grid quality for SMT line

Electronics Forum | Fri Nov 26 09:18:55 EST 2021 | bukas

Hi, has any of had a problem with power grid in you factory? Do you use EMI filters, power factor regulators or similar? Is there a known type of equipment that causes voltage/current harmonics and other interferences? thank you

power grid quality for SMT line

Electronics Forum | Tue Nov 30 07:40:26 EST 2021 | bukas

thank you for information. my problems did start sometime around lighting upgrade 4 years ago. we bought some cheap led panels about 150-180 of them in total...

power grid quality for SMT line

Electronics Forum | Mon Nov 29 15:09:24 EST 2021 | saberbouras

Hi, I have experienced the same troubleshoots for our machines and computers, accroding to the expert who did the harmonics study our problem is created by the intense use of UPS, lights yes lights. The resultant high frequency variation in sinewave

power grid quality for SMT line

Electronics Forum | Tue Nov 30 07:53:54 EST 2021 | saberbouras

I suggest that you perform a electric power quality analysis with a qualified technician using this equipment https://www.fluke.com/en-us/product/electrical-testing/power-quality/1742-1746-1748 test 1 : all lights on take the measurement of your s

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