Electronics Forum | Tue Jan 14 17:22:16 EST 2020 | emeto
Avillaro, would you say that vapor phase process was selected, because the boards are so thick and heavy? I would assume so. Have you ever tried to run them through reflow oven? To understand better your challenge, we need to understand the setup be
Electronics Forum | Fri Dec 16 10:57:38 EST 2022 | sarason
In the automotive industry there has been a swing away from gaskets and a movement to high temp resistant sealing compounds. In all probability your original gasket would have been viton for high temp O-rings. So if that is the case the replacement
Electronics Forum | Mon Dec 19 21:34:47 EST 2022 | stephendo
To add to that we once had to replace the gaskets in a very old oven. We couldn't find any so we used a high temperature sealant. And then realized that they weren't gaskets originally, it was originally sealed with high temperature sealant. After it
Electronics Forum | Fri Aug 24 19:08:17 EDT 2001 | stefo
Happy Friday All! Well, it seems another "opportunity" has presented itself to me. Looking to assemble a 24" X 24", 52-layer board... piece-o-cake, right? Not real sure of all the components that are on it, but I do know that there is some 20-mil
Electronics Forum | Fri Jun 28 01:06:49 EDT 2002 | Dreamsniper
Hi Steve, We have a Heller 1088 (4 Zone Oven) and we are using Indium NC92 with 2% silver. My Oven setting is: Zone 1 Top & Btm 125 Zone 2 Top & Btm 145 Zone 3 Top & Btm 188 Zone 4 Top & Btm 265 Belt Speed 34 cm/min I have run a profile
Electronics Forum | Wed May 12 13:34:02 EDT 2010 | hegemon
Thanks Pete B - great info. I am currently preparing a DOE to address concerns about reflow of componentry on the bottomside of the PCB while in the vapor. Specifically cosmetics and part dropping. Bottom side has no flux, but will be fully reflow
Electronics Forum | Mon Jun 16 16:57:34 EDT 2008 | ldavis
We are using VP on all of our lead free assemblies. 1. We are getting great, very repeatable results. 2. The profiles were created during the implementation of the equipment and we only change 3 parameters for each assembly processed. Heater power,
Electronics Forum | Wed Jun 18 08:51:34 EDT 2008 | ldavis
We actually found the opposite to be true. Boards processed in VP are much cleaner than those processed in our air-only convection oven. We tested 5 lead free solder pastes upon implementation and found that the type of paste does affect the number
Electronics Forum | Fri Jul 28 14:34:13 EDT 2000 | Gary Simbulan
Belive it or not, these boards were run through a Centech batch mode Vapor Phase machine. Single stage top side IR preheat. Vapor temp 218 C. Solder paste is an SN62 RMA.The boards were FR4 8 layer w/ solder mask, fairly conventional as might be e
Electronics Forum | Mon May 01 23:23:58 EDT 2006 | grantp
Hi, I off center idea we used when we started. Get a pasta cooker, and put in vapor phase fluid, and then use that. Place the product in the bottom of the inner pot, and then heat on a small hot plate. When the vapor cloud gets high enough and the
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