Electronics Forum: 2nd reflow fall (Page 1 of 34)

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 | Thu Nov 02 18:56:10 EST 2006 | darby

John, As Dave says, never clean raw paste. Let it sit for at least 24 hrs if you can and use a plastic spatula to wipe off the bulk of it. The "drier" the paste the easier it is to remove without it travelling down vias etc. You will then have to cho

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?

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 10:30:36 EDT 2014 | cbeneat

We have the same ovens, our 2 sided boards have the same profile for both sides. Haven't seen a problem in 8 years.

Reflow 2nd side on Vitronics Soltec XPM

Electronics Forum | Tue Jun 03 12:08:14 EDT 2014 | emeto

I don't think you decide that based on the oven. More important is what kind of parts you have on the board. If you have big heavy parts you should run them as second side.Of course you have the option to put glue under the suspicious part and run it

Losing parts in reflow

Electronics Forum | Wed Jun 13 15:56:35 EDT 2007 | ck_the_flip

I experienced this with a high-mass capacitor. I was able to turn down the bottom-side convection (around 50�C lower than each of the top-side heaters), and able to NOT lose any parts. I got the bottom-side part just slightly over liquidus, and min

Oven Dilemma: New Batch Type Vs. 2nd Hand Conveyor

Electronics Forum | Tue Apr 07 21:56:32 EDT 2009 | davef

electrovert bravo 4050 to find things like: Cookson Electronics News, ISSUE #6 � SUMMER 2002, High Temperature Bravo� 4050 Reflow Oven Available: ELECTROVERT� has introduced a new high temperature reflow soldering system designed for producing lead

Oven Dilemma: New Batch Type Vs. 2nd Hand Conveyor

Electronics Forum | Wed Jun 24 13:52:31 EDT 2009 | jimpat

I have worked with both a batch and 5 zone conveyer oven. Both ovens worked very well. The batch was used for prototypes and low volume processing. Conveyer oven was more efficient when reflowing medium to large quantities. Basically there are ad

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