Electronics Forum: how and long and can and printing and sit (Page 1 of 2)

Re: SMD Inspection and Touch-up

Electronics Forum | Sat Jul 24 00:04:55 EDT 1999 | Scott McKee

There is a practise within the industry of an Inspector inspecting a board, and that same Inspector performing touch-up. My opinion is that the Inspection and Touch-up operations should be separate functions whereby the Inspector is not perform

Re: Moisture Sensitivity and Package Cracking

Electronics Forum | Tue Feb 02 11:07:36 EST 1999 | justin.medernach@flextronics.com

Greetings, We are discussing what should and what should not be baked and vacuum packed. Should we just concentrate on the fine pitch packages and the bga's? What about those components which come on blister tape, should they get baked and r

Re: Fountain Wave Soldering and Repair/Rework Equipment

Electronics Forum | Thu Jan 21 20:22:02 EST 1999 | Earl Moon

Hello, I will be evaluating and qualifying two equipment types. The first is a fountain soldering device. I need practical advice on all the stuff you guys and gals know about as good, bad, ugly, best applications, setup, limitations, an

Re: Fountain Wave Soldering and Repair/Rework Equipment

Electronics Forum | Thu Jan 21 19:38:24 EST 1999 | dean

Hello, I will be evaluating and qualifying two equipment types. The first is a fountain soldering device. I need practical advice on all the stuff you guys and gals know about as good, bad, ugly, best applications, setup, limitations, and all

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Sun Apr 25 12:05:50 EDT 1999 | Chrys Shea

Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free solderin

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Mon Apr 26 09:18:27 EDT 1999 | C.K.

Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free so

Re: Adhesive Dispenser Vs. Screen Printing Adhesives Pros and Cons

Electronics Forum | Thu Oct 12 22:16:59 EDT 2000 | Dreamsniper

Hi Guys, I'd like to share this to all of you...you can start playing with the rests...Stated prices, if not indicated, are in Aussie $ or Singapore $. Stencil Printing Adhesive Pros a) Less Capital Equipment Cost (Short Term). In reality it is f

High Relative Humidity and Blistering Issues in Assembly

Electronics Forum | Sun Sep 07 20:51:52 EDT 2014 | natashakt

1. Is the high RH environment consistently at 72% RH and 21.4 degrees Celsius? No, over the past 2 weeks I have recorded the highest at the moment: 67% RH at 22.6 degrees C and lowest (it is Spring not summer yet): 31.9% RH at 19.0 degrees C. Or d

environment Operational deg-C and RH% for Paste Printer

Electronics Forum | Thu Jun 06 09:45:14 EDT 2002 | Hussman69

We based ours on the type of paste we use (stencil life) and not so much the machine. Then we coupled that to what 'true' conditions we normally see in our plant, and determined that under these conditions Max & min) our printing process should be g

High Relative Humidity and Blistering Issues in Assembly

Electronics Forum | Sun Aug 17 19:06:42 EDT 2014 | natashakt

Hi All, I have been looking in to some failures of PCB's in Assembly. After SMT the boards are stored for different periods of time in high humity environment (72% RH and 21.4 degrees Celsius) before being sent to Assembly to be handsoldered/put thr

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