Electronics Forum: m and 21 (Page 2 of 166)

tape splicing pros and cons

Electronics Forum | Wed Sep 21 10:11:12 EDT 2005 | gregp

Hi Rob, I'm not sure I know what you mean. Are you referring to adding leaders to cut tapes in order to minimize component loss? Also, I've never heard of tapes snapping. Is this something you see regularly on a particular piece of equipment? Th

Discoloring of Soldermask and silkscreen

Electronics Forum | Mon Apr 12 19:28:26 EDT 1999 | Tom B

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 C 4. 1.5 C/s u

Re: Reflow glue and past.

Electronics Forum | Wed Feb 09 21:29:28 EST 2000 | Dave F

Charlie: People cure glue using their paste reflow profile all the time. And most of them are happy. Personally, I�m with Dean and Travis. It�s possible to as you suggest, it�s appealing not to mess with your oven profile, but it just doesn�t s

Printer and Reflow Oven Recommendations

Electronics Forum | Fri May 15 10:12:21 EDT 2015 | capse

I'm the Rep for Vitronics Soltec and ASYS EKRA in the southeastern US. I suggest you take a look at Vitronics ovens. The AutoSet feature makes new profile development as easy as possible without buying a third party accessory, The new EKRA user inter

Desiccants and pcb finish degradation?

Electronics Forum | Mon May 21 17:32:23 EDT 2001 | davef

I said: "Our electronic circuit board fabricators seal the boards in moisture barrier bags [MBB]. We discontinued the use of desiccant bags in these MBB because of concerns about the desiccant releasing materials that would affect the solderability

about thermocouple for refloe and rework

Electronics Forum | Tue Oct 17 21:14:14 EDT 2000 | hankey_cn

Who can tell me the IPC** about the thermocouple for reflow and rework? I'm waiting....

MY500 End of life and reliability

Electronics Forum | Thu Jun 15 21:37:00 EDT 2023 | dwl

I'm sorry for your inbox. You think you have 20 replies to your question and its just some bot talking to itself.

Re: Discoloring of Soldermask and silkscreen

Electronics Forum | Mon Apr 19 11:21:03 EDT 1999 | Travson

| 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: 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

iPulse M4e Pick and Place Machine

Electronics Forum | Fri Oct 21 08:03:40 EDT 2005 | Mike

Hello Darby, because of the machine configuration it depents very strong on the feeder configuration and on the board if the 3 heads more give you so much more CPH. Realistic it will only be 1-2000 CPH more in realistic operation. On the other hand


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