Electronics Forum | Tue Apr 13 18:11:00 EDT 1999 | Jimmy Strain
| 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
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
Electronics Forum | Mon Apr 19 20:49:13 EDT 1999 | Dave F
| 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
Electronics Forum | Tue May 20 09:34:28 EDT 2008 | roc2x
Well something is different isn't it? * Paste * > Part supplier * Board fabrication * Was the > profile that you reference the measured > temperature or the the settings keyed into the > oven? > > The cross sections seem to show less > than exp
Electronics Forum | Mon Apr 14 20:13:40 EDT 2014 | davef
So, someone is going to get a chance to buy a nice and shiny oven, eh? Summary from my notes of old thread on SMTnet: Some people melt sugar and use that solution to clean cooked-on flux residue. Dissolve sugar into warm water, spray it on the area t
Electronics Forum | Thu Oct 21 18:32:21 EDT 2021 | rwyman
I have (6) Vitronics ovens, models XPM1, XPM2 and XPM3, ranging in age from 7-21 years old and they just keep chugging along. Keep up on the maintenance and they'll be good to you. Just this week i had a presentation from them on their current mode
Electronics Forum | Wed Mar 12 17:50:22 EDT 2008 | tzawaide
Takt time and the relationship with the conveyor speed and oven length. Thanks much!!!
Electronics Forum | Wed Aug 30 00:16:15 EDT 2000 | Craig
We are reflowing ceramic resonators and are finding their tops falling/popping off when handling the pcbs during final assy. The epoxy seems to be coming off the components base and adherring to the lid. The components are "RFM resonators", case type
Electronics Forum | Mon May 08 08:54:28 EDT 2000 | Lee Radney
Ok... Anybody got any quick, low cost ideas that can help me here? We run various panel layouts (all products are same width) thru our reflow oven. The problem is that due to the different layouts of our panels, the moveable center support chain
Electronics Forum | Mon Aug 06 09:15:01 EDT 2001 | gdstanton
|120 |140 |160 |180 |180 |190 |260 | with a belt speed of about 28 IPM. The uBGAs are placed parallel to each other along the smallest side. The small edges closest to each other are raised slightly and form a "hill" when looking from the horizon o
