Electronics Forum: following (Page 181 of 253)

Re: Equipment Maintenance costs

Electronics Forum | Tue Jun 22 13:56:55 EDT 1999 | Deon Nungaray

| I was wondering if anybody could give an estimated cost of equipment maintenance per year for a complete SMT line for | a medium volume facility? | Deon Rresponse: Hi John, Your question is very generalized. I think that in order to make a good

Re: Pre-baking derating

Electronics Forum | Fri Jun 18 12:11:20 EDT 1999 | John Thorup

| A user of one of our components exceeded the floor life of some plastic BGA components. They did do a pre-bake prior to SMT reflow but only 72 hrs at 40C and not the recommended 12 hours at 125C. I've recommended accoustic microscopy to look for po

Re: Process Change

Electronics Forum | Sun Jun 06 08:00:06 EDT 1999 | Dave F

snip | Ryan, | | The only advive I got is just don't do it!. Dave's right the grain growth in it is pretty bad. the other thing you got to look at is how much heat is the board gonna produce in it's working life..??? and where is it gonna be used,

Re: Need help on DFM rules

Electronics Forum | Tue Jun 01 11:43:25 EDT 1999 | Dave F

| Hi, | | To improve the Design For Manufacturing I am currently looking to write down some design rules that can (and should be) used by our engineering department. | | Can somebody help me get started or give some usefull tips on where to find a

Re: Problems with Ceramic Capacitor SMD In-Circuit Test

Electronics Forum | Thu May 06 01:37:56 EDT 1999 | Kallol Chakraborty

| I would like to know if someone aleady have problems with Ceramic Capacitors SMD in In-Circuit Test (see below)and how did you solve this problems ? | | PROBLEMS | 1 - Only one kind of capacitor (2n2F), of all capacitors on board, sometimes are o

Re: Setting up solder material evaluation (suggestions?)

Electronics Forum | Tue May 04 10:30:35 EDT 1999 | Dave F

| I am about to embark on an effort to evaluate 3 different solder material suppliers and their recommended materials for our assembly process, in an effort to find the best supplier/material. We do mixed technology, with NOCLEAN chemistry so I will

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Fri Apr 23 14:59:14 EDT 1999 | Chrys Shea

| Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free soldering on these g

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Fri Apr 23 15:04:44 EDT 1999 | M.T.

| | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free soldering on t

Cleaning procedures for Entek-Plus Cu-106A

Electronics Forum | Tue Apr 20 14:25:05 EDT 1999 | Stephen Smith

I am wondering if anyone has any info regarding solder paste misprint clean-up procedures for Entek Plus CU-106A PCB's utilizing a water-clean solder paste. In a implementation procedure they recommend a 2-3 minute wash cycle with the following crit

Re: roll type of cleaning wiper

Electronics Forum | Mon Apr 19 03:53:17 EDT 1999 | Scott Davies

| | Please visit our Web site, especially 'link page', to get some hint for roll typr of cleaning wiper for automatic screen printers. http://www.squeegee.co.kr | | If the brainless idiot that keeps posting this message on the forum bothers to rea


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