Electronics Forum | Wed May 21 13:59:19 EDT 2008 | pjc
Here's what I've seen for no-clean flux applications: Leaded: Dwell Time is? 2 - 3 seconds Top side board temp max? If some small SMT parts reflow are we too hot? 110 to 120C top side board temp just before hitting the wave(s) Pot temp. 245C Lea
Electronics Forum | Thu May 22 16:52:39 EDT 2008 | tonyamenson
Indium got back to me with the attached PDF. I always assumed, that in order to avoid thermal shock, there could not be any more than 80 degrees C difference between the solder pot and the pre-heated board. However, it would seem that any thing le
Electronics Forum | Tue Jul 29 12:51:40 EDT 2008 | grics
I am having some problems with some of my pcbs at ive solder. We are using an ersa versaflow. It has an automated spot/spray fluxer (Interflux Pacific 2009M) , 1 preheat stage, a leaded pot/nozzel, and finally a lead-free pot/nozzel. Nozzels move, b
Electronics Forum | Wed Aug 06 04:11:56 EDT 2008 | chrispy1963
GR@ICS, can you be more specific about your up in the Ersa machine please? Nozzle size, pump rate (%), and is your machine equipped with monitors on the solder pots? We have the same machine it sounds like, however we run Pb-Free in both pots. I
Electronics Forum | Sat Oct 18 09:30:43 EDT 2008 | hussman
Sounds like a part problem. You can SOMETIMES over come this with a hotter profile. We see this a lot with brokered parts. Seems like a lot of people are rejecting parts because a lot of companies haven't perfected their RoHS process, yet produce
Electronics Forum | Wed Feb 04 10:24:05 EST 2009 | dyoungquist
We use SN100C in our selective solder process. The 3 keys to proper hole fill are applying a proper amount of flux, heating of the pcb and solder temperature. If either the pcb or solder is not hot enough, you may not get good hole fill. To adjus
Electronics Forum | Thu Feb 16 14:02:28 EST 2012 | joeherz
We have been using a selective solder system for all of our automated LF through hole processing to this point. It has served us well but volumes are increasing and we are getting ready to pull the trigger on a full size wave machine to handle the l
Electronics Forum | Mon Mar 25 11:07:21 EDT 2013 | mhampson
I need to find the pack rats out there!!! We have been notified by a supplier of a potted component, that the potting material (TRA-BOND 226F01) is out of production and no longer available. The material was originally made by TRA-CON who was then
Electronics Forum | Mon Nov 10 09:03:47 EST 2014 | rgduval
I can't claim to be an expert....I've just bought a used RPS, and it'll be my first...but, after reading through their manual, and working on setting things up, I'd say: -Conceptually, I like the idea of moving the board rather than moving the entir
Electronics Forum | Tue Mar 03 09:29:48 EST 2015 | rgduval
A couple of things that have helped me with solder ball issues at wave in the past: 1. Flux. Insure good flux coverage on the bottom of the board. 2. Preheat. Insure that the board is sufficiently preheated for the wave operation. Since you're