Electronics Forum: downs (Page 316 of 462)

SMT vs TH

Electronics Forum | Mon Mar 07 16:36:37 EST 2011 | remullis

I have been working on collecting data all day today. We are a OEM so our RMA and QA system is tied together. I have taken this data and broken it down by part type and individual boards. We had 264 (defects/rma returns) of that, 88 were NO Faults. O

Nub bying p&p, stencil printer and reflow.

Electronics Forum | Wed Apr 13 13:40:27 EDT 2011 | jebs

Hi. the res/cap is mostly 805, solder paste will be led free and will only have a few fine pitch IC on each board. The boards will contain between 140 - 160 components and will run a production of 300 - 500 each day with only one or two different boa

Sad news about Werner Engelmaier

Electronics Forum | Sun Apr 17 12:19:50 EDT 2011 | stevezeva

Jack Crawford from the IPC, received the following message from Peter, Werner's son this morning: This is Peter, Werner's son. It is with great sadness, I am letting you know my father passed away on 4/15/2011. He was known as "Mr. Reliability" in

Stress induced during V-score depaneling

Electronics Forum | Mon Jun 13 18:47:56 EDT 2011 | kahrpr

Cracked parts close to the edge on pizza cutters are a common problem. There are a lot of stresses on the board as the blade cuts through the board. Raising the blade height so that the boards are not cut clean through will help. You will have to fi

PCB Washing No Clean

Electronics Forum | Tue Jul 05 13:11:46 EDT 2011 | markhoch

Hi Bill, I agree with not cleaning the no-clean. If you're looking for a cleaner because one of your customers is requiring no residue be left on the PCB's, I'd investigate switching to a Water Soluable Process for those specific assemblies. (You'll

Universal Instruments Lightning Head

Electronics Forum | Wed Jun 29 14:40:12 EDT 2011 | wrongway

Hello All We are currently running 3 universal smt machines one is an advantis lighting head all 3 machines are 2007 we run 2 shifts 5 days a week I have had very little trouble with them or the feeders. we have 2 universal through hole machines one

Screen Printer

Electronics Forum | Wed Aug 03 16:41:22 EDT 2011 | jlawson

SJ Innotech from (Korea), make excellent printers, have some excellent features, other do not have, great bang for buck, well built. Have machine with FULL 3D SPI built in, first machine maker to offer this on market. Also offer long PCB models for

Cleaning

Electronics Forum | Wed Aug 31 12:00:59 EDT 2011 | cpitarys

Vapor phase or vapor degreasing cleaning for electronics is simple technology that holds merit on process situations like you described. Easy and quick to set up and process with today's modern equipment you can be up and running in no time once the

Selective Soldering

Electronics Forum | Mon Oct 03 11:33:09 EDT 2011 | artposada

I have been getting solder balls on the leads of a transformer that I am soldering to my pc board. My parameters are listed below. The board PTH's are .039 The transformer leads are .0255 square. My solder pot temp. is 310C Solder is Lead Free AIM

GSM USOS 3.2.3 patch

Electronics Forum | Tue Oct 11 09:26:42 EDT 2011 | dilogic

For all of you that are using this version of GSM USOS, I've made a patch that changes default fiducial repair drop-down menu from "Reteach Fiducial" to "Alignment Done". We had a large batch of boards with lousy fiducials and it drove me crazy havin


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