Electronics Forum: problem (Page 1136 of 1311)

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Fri Apr 23 15:33:50 EDT 1999 | C.K.

| | 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

Re: roll type of cleaning wiper

Electronics Forum | Sun Apr 18 19:18:28 EDT 1999 | Wayne Bracy

| | | | 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 | | | | | | | Idiot: I wouldn't visit your site if I had to start using toilet pap

Re: Discoloring of Soldermask and silkscreen

Electronics Forum | Wed Apr 21 00:35:31 EDT 1999 | Scott Cook

| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185

Re: Universal GDM

Electronics Forum | Wed Mar 24 23:04:00 EST 1999 | Al O Owzitgon

| We are dealing with down time accredited to the Pumps getting clogged with dried glue. We have decided to purge all spindles at 6 hour intervals. We are looking at making this process automated. Has anybody tried this and if so, is there a way to s

Re: Spray Fluxers

Electronics Forum | Tue Mar 16 14:23:44 EST 1999 | Steve Skinner

| Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there a

Re: Spray Fluxers - was this an ad???

Electronics Forum | Mon Mar 29 16:56:58 EST 1999 | Chrys Shea

| | Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there

Re: Screen tension (measuring)

Electronics Forum | Mon Mar 15 23:00:40 EST 1999 | Dave F

| In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. | Later on we started to us metal stencils, glued in A polyester screen. even than we had som

Re: Screen tension (measuring)

Electronics Forum | Tue Mar 16 08:38:59 EST 1999 | George Verboven (Process Engineer)

| | In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. | | Later on we started to us metal stencils, glued in A polyester screen. even than we had

Re: Transient Voltage Suppressors

Electronics Forum | Fri Mar 12 20:19:46 EST 1999 | Dean

| AVX and a few other companies make these chip transient voltage suppressors (TVS) parts that are a real *PAIN* to use. According to AVX: | "Due to the semiconducting nature of the doped Zinc Oxide (ZnO) ceramic material, SMT TransGuards ar

Re: Philips vs. Quad

Electronics Forum | Thu Mar 18 20:27:57 EST 1999 | Jim Muckle

| | | I'm in the process of selecting a medium speed pick & place machine. I need to place a wide range of components from 0805 | | | chips to a 144 pin MQFP (32mm square 25mil lead spacing). | | | | | | Anyway, I'm looking at the Quad QSA-30, the


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