Electronics Forum: reflow profile (Page 246 of 259)

What is delta t?

Electronics Forum | Thu Oct 25 11:29:04 EDT 2007 | ck_the_flip

Forget all the bickering and semantics. EVERYONE IS RIGHT!! ...but then again, in soldering, there IS no right, wrong, or indifferent... just blame. :-) Soldering is, after all, the most difficult process with the most opportunities for defects.

Re: Board Warp And Twist

Electronics Forum | Thu Aug 10 13:12:10 EDT 2000 | Bob Willis

You may care to review the following from my Circuits Assembly page on line. "HOW FLAT IS FLAT AND DO WE NEED FLAT CIRCUIT BOARD, YES WE DO ? As production problems go there is one that keeps reoccurring time and time again. The blame is usually di

Re: Drying ICs any advice

Electronics Forum | Fri May 15 10:41:12 EDT 1998 | Dave F

| | | We had some failures on an IC package that the manufacturer has put down to moisture inside the package, leading to popcorning. | | | This seems a bit odd, the package is a PLCC 84 which is quite thick. I have only seen this problem on thin pac

Re: SM Headers & Connectors

Electronics Forum | Tue Apr 14 15:50:45 EDT 1998 | Bob Barr

Justin, Thanks for the response to my dilemma. For once it's not just me! The parts seem perfectly solderable, but I will try the modification to the profile you suggested. I wonder if the retention clips may be letting loose from the holes they a

Very thin laminate substrate problem with solder printing

Electronics Forum | Mon Jan 30 05:58:39 EST 2017 | rob

Hi all, > > Am new to SMT here. > > I have a very > thin laminate substrate which around 120um > thickess. Being that thin, warpage is constantly > an issue for us. > > For the solder printing part, > we have a number of problems. > > Being s

Buying a new Reflow

Electronics Forum | Thu Aug 29 15:51:21 EDT 2019 | spoiltforchoice

> If quality or Reliability is the key.... BTU, <BR> > Soltec Vitronics..Rehm... If it is the money <BR> > ...probably not these brands.....:) <BR> <BR> Well I

Re: IR Versus Hot Air - Put-Up Your Dukes

Electronics Forum | Thu Sep 23 23:58:01 EDT 1999 | Earl Moon

| | Jackie's posting recently and responses to it got me to dondering. First, recollecting, we bought an IR rework station a couple million years ago. It had a IR source on a stand, a bunch of lenses, and Reynolds aluminum foil for shielding near-b

Re: IR Versus Hot Air - Put-Up Your Dukes

Electronics Forum | Mon Sep 27 12:19:19 EDT 1999 | John

| | | Jackie's posting recently and responses to it got me to dondering. First, recollecting, we bought an IR rework station a couple million years ago. It had a IR source on a stand, a bunch of lenses, and Reynolds aluminum foil for shielding near

Re: Clean before conformal coating?

Electronics Forum | Thu Jan 04 20:16:02 EST 2001 | Mike Konrad

Hi Cory, As a manufacturer of aqueous cleaning systems, my advise is somewhat biased, however I believe it to be accurate. We have hundreds of customers who have implemented no-clean programs. The programs have been successful when measuring the r

HASL vs. ENIG

Electronics Forum | Thu Dec 14 12:18:01 EST 2000 | genny

Hello all, Our company has always used HASL finish on our products. Recently however, we have a had a problem on a couple of boards that I have been told cannot be avoided with HASL, and we should switch to ENIG(electroless nickel immersion gold).


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