Electronics Forum: selective solder with no pre heat (Page 1 of 6)

Lead free selective solder

Electronics Forum | Fri Jun 23 12:54:53 EDT 2017 | guts1872

We are having issues with top fill and dropping pins on Molex connectors with our KISS 101. Unfortunately we do not have a pre heater and bottom side pre heat with our nozzles is not satisfactory. Most of the issues occur when using a no clean proces

Lead free selective solder

Electronics Forum | Thu Jun 29 12:07:09 EDT 2017 | georgetruitt

HOW THICK IS THE BOARD? IS THERE A LOT OF COPPER IN THE BOARD? DOES YOUR CUSTOMERS PROVIDE HEAT RELIEF IN THE BOARDS BARREL DESIGN THERE NEEDS TO BE PLENTY OF ROOM FOR LEADFREE SOLDER TO FLOW, DID YOU CHECK YOUR PIN(LEAD)TO HOLE (BARREL) RATIO? N

Spikes with our selective solder ERSA machine

Electronics Forum | Tue Nov 14 16:06:27 EST 2000 | zorox

We have an ERSA machine here where we have solder "spikes" occasionally. We have made sure our flux is dispensing properly, we have adjusted z axis speeds, our preheater is heating properly, adjusted XY speeds, etc. Can anyone think of something we m

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Wed Oct 02 18:18:58 EDT 2002 | davef

The steadfast rule of thumb is: In order to get reliable reflow, you need to be at or higher than [liquidus + 20�C] for about 5 to 10 seconds, rather than those old "60 seconds above 183�C" guideline. This provides for setting your peak based on the

Running with sn100c in my solder pot!

Electronics Forum | Tue Jun 27 16:05:33 EDT 2006 | grantp

Hi, Do you mean selective palettes in the wave? We are running those, and it makes the process window tight, but once we got there, it's great. Pre heating the board was a bit difficult, but we got it right, and went for a water based flux. Not sure

Re: water soluable or no clean flux?

Electronics Forum | Mon Sep 20 14:46:03 EDT 1999 | Dave F

| Hi all, | | We have a little discussion here about the suitable flux for a certain process, as all of us are beginners we need your advice. | | We are producing VGA cards and mother boards for PC's all components to be wave soldered are TH, the S

Re: water soluable or no clean flux?

Electronics Forum | Mon Sep 20 17:20:08 EDT 1999 | Earl Moon

| | Hi all, | | | | We have a little discussion here about the suitable flux for a certain process, as all of us are beginners we need your advice. | | | | We are producing VGA cards and mother boards for PC's all components to be wave soldered are

Re: water soluable or no clean flux?

Electronics Forum | Mon Sep 20 17:36:46 EDT 1999 | Dave F

| | | Hi all, | | | | | | We have a little discussion here about the suitable flux for a certain process, as all of us are beginners we need your advice. | | | | | | We are producing VGA cards and mother boards for PC's all components to be wave so

Re: water soluable or no clean flux?

Electronics Forum | Tue Sep 21 07:47:31 EDT 1999 | Wolfgang Busko

| | Hi all, | | | | We have a little discussion here about the suitable flux for a certain process, as all of us are beginners we need your advice. | | | | We are producing VGA cards and mother boards for PC's all components to be wave soldered are

Throiugh Hole pad missing after selective soldering

Electronics Forum | Mon Apr 18 12:14:39 EDT 2022 | proceng1

As far as hole fill, as was stated above, class 2 only requires 50% up-fill. In order to get better up-fill on the initial pass, you may need to consider more pre-heat. Also, better application of flux. Are you using a drop jet, or a spray? You

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