Electronics Forum | Tue Apr 07 09:02:00 EDT 2020 | proy
I am removing a few QFP100s with a Pace rework station. Most of my profiles stored are set up with preheat/soak/spike which is more geared to the replacement resoldering. I am looking for suggestions on what people use for a quick/safe removal ie: no
Electronics Forum | Mon Jun 27 14:44:47 EDT 2022 | kelvinchoong
Hi Sir, The VP Machine that i am currently using takes reference from its own temperature sensor. so most of the time i would have to adjust multiple times for my PCB to soak at the right temperature or reflow for the duration that i need it to. Fo
Electronics Forum | Mon May 15 18:31:28 EDT 2023 | daniel_stanphill
I have found Superior No. 75 to be an absolute miracle worker when it comes to nozzle maintenance. I let our worst nozzles soak in that over the weekend and then the majority of the dross would literally flake off with light pressure from a pick/scre
Electronics Forum | Thu Aug 17 07:48:46 EDT 2000 | Kamran.T
Sounds like improper heat distribution! Raise your prheat/soak time to assure even heating of the board∂. Another issue could be the moisture causing this anomaly.
Electronics Forum | Sun Nov 07 11:15:57 EST 1999 | Steve Thomas
And you still have sufficient volume left when you do that? I'm new to this, so I'm not questioning the validity of your statement, just soaking up what I can.....thanks. Steve
Electronics Forum | Tue Aug 14 21:29:29 EDT 2001 | mugen
Hi, Just to clarify the terms, traditional : aka : Ramp-Soak-Spike (RSS) profiling method tent : aka : Ramp-To-Spike (RTS) profiling method By search engines (eg. Yahoo), you can find more example profiles for your ref.
Electronics Forum | Thu Aug 23 00:17:53 EDT 2001 | mugen
Mike, 1) NC process = less BGA voids & void-size 2) longer soak times... Heyz, thanks mate :) ~~~~~~~~~~~~~~ Dave F, tot u were inclinded to the school of thought, that NC process hath higher chance for whining abt voids?
Electronics Forum | Wed Oct 23 03:48:48 EDT 2002 | kcngoi
Hi , DEK S'pore came out with a univeral frame called 'vector',that the stencil can be removed from the frame and soak into solvent for effective cleaning. RGDS JOSEPH
Electronics Forum | Wed Feb 26 10:57:47 EST 2003 | larryk
Dave, I had to contact Circuits Assembly, but I got the article. I'm going to forward it on to Ryan. I think you're on to his problem with flux becoming entrapped in the epoxy. It plays along with Locktites suggestion of a longer soak on his profile.
Electronics Forum | Thu Jun 26 04:34:49 EDT 2003 | emeto
Hi James, I saw very good posts here.Now I will give you one more practical way: 1. My advice is to encrease the temperature(like your first sidgestion). Termostress is important thing so your first zone should be 120-150C. 2. The paste profile. If
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