Full Site - : obsolete stencil - what to do? (Page 8 of 10)

Soldering Lead-Free Globtop BGA to Pin-Socket Interposer

Electronics Forum | Thu Nov 20 09:19:01 EST 2003 | markhoch

What do they say? Not too much as of yet. (I haven't actually recieved them yet.) The parts are being custom made by my customer. I've already bought my stencil, so I'm thinking I'm just going to try and stencil the tacky flux right on the pads and p

gas to extend allowed print-to-place time?

Electronics Forum | Mon May 02 12:28:03 EDT 2016 | adamjs

Why can't you place the entire job the same day you paste it? I can. But setting up and properly cleaning the stenciling machine takes 2-3 hours. We only run one shift. If we do that every day we're spending most the time on setup+teardown. Much

Re: converting from 0805's to smaller packages

Electronics Forum | Mon Jan 08 17:46:38 EST 2001 | Mark Krmpotich

Panasonics are good machines as long as you do the proper and timely PM's they recommend. Plus with my past history and from others that I here, their feeders are some of their biggest down fall. That's typically why they have to introduce new style

Masking of PWBs prior to conformal coat

Electronics Forum | Fri Apr 21 17:46:29 EDT 2006 | SD

First of all, do not use kapton tape! It tends to cause a dewetting effect around the tape. A call to Humiseal will explain why. There's not really a blanket answer to your question.... Removing cured liquid mask can often result in a fillet ef

How to choose a new solder paste

Electronics Forum | Thu May 26 13:28:12 EDT 2011 | blnorman

I agree with Dave on the processing issues, but there are others: Print speed capability (do you get good deposits at various print speeds), humidity exposure (our plant did get to the high side so moisture absorption on the board/stencil was an issu

Voiding in board to BGA joints

Electronics Forum | Tue Mar 09 07:51:12 EST 2004 | Bryan

Hello everyone: 1.I use Kester R244 63/37 solder paste. 2.Stencil thickness 6 mil. 3.Springdale Chipset. 4.PCB finish:HASL 5.Profile:Peak temp.:210~220C,time above 183C:60~90 seconds,time between 150~183C 60~90 seconds. 6.Reflow oven:Heller 1800 Voi

How to choose a new solder paste

Electronics Forum | Thu May 26 08:52:42 EDT 2011 | davef

Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste � Not An Option Contributed by Phil Zarrow of ITM an Independent SMT consulting firm With soldering being the dominant source of assembly

85K grant. How best to use?

Electronics Forum | Fri May 20 03:14:03 EDT 2016 | designhaus

Hello, We are about receive an 85.000 USD award grant towards purchasing manufacturing or testing equipment for our company. We are trying to figure out how to best use this grant. Here are short facts about us: We are a design house, so all our ma


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