356 2nd results

Electronics Forum: 2nd (Page 1 of 36)

2nd reflow

Electronics Forum | Thu Oct 26 14:51:46 EDT 2000 | eramirez

Currently I am running a very dense PCBA using a PCB less than 20 mils thick. We have two facilities running this product. One is using Nitrogen during reflow one is not. What is the advantage and disadvantages of using Nitrogen during the reflow

Re: 2nd reflow

Electronics Forum | Thu Oct 26 17:48:12 EDT 2000 | ptvianc

Hi: Generlly speaking, in a reactive mode, nitrogen blankets are used to improve the yield of a process that is marginal in terms of removing, and/or preventing the re-appearence of, oxides on copper features or component I/Os. That marginality can

Cleaning Paste from 2nd Side Print

Electronics Forum | Tue Oct 31 15:31:32 EST 2006 | markhoch

That depends, W/S or No-Clean, SnPb or Pb Free?

Reflow 2nd side on Vitronics Soltec XPM

Electronics Forum | Tue Jun 03 10:38:20 EDT 2014 | patel_daxa29

Thank You Chris.

Reflow 2nd side on Vitronics Soltec XPM

Electronics Forum | Tue Jun 03 08:33:06 EDT 2014 | patel_daxa29

Do I need to lower temperature of bottom zone (for common size parts) while reflow 2nd side of the board or I should be using same profile as I used for 1st side reflow? Will parts on bottom side will stay in place without changing temperature?

new SM482 or 2nd hand YS12 ?

Electronics Forum | Fri Sep 24 09:13:04 EDT 2021 | glenenglish

Hi Does anyone care to venture an opinion, whether to buy 2nd hand low hour (17k-30k hours ) YS12F , or a NEW Hanwa-Samsung SM482 ? feeders are a little cheaper on the Samsung, but not much. I have a large cache of CL from my Yamaha YV88ii and Kayo

Cleaning Paste from 2nd Side Print

Electronics Forum | Tue Oct 31 13:31:36 EST 2006 | John S.

We've just started running a lot of double sided assemblies. What is the preferred method for removing paste from a board that is populated on side 1 if the side 2 print is poor? Thanks John S.

Cleaning Paste from 2nd Side Print

Electronics Forum | Tue Oct 31 16:30:32 EST 2006 | John S.

SnPb No-Clean. We've done it on bare boards with alcohol and an ultrasonic bath, but that seems very agressive on a half populated board. Thanks John S.