Electronics Forum: top (Page 284 of 311)

Re: Reflow Oven Evaluation Using Cpk

Electronics Forum | Sat Mar 21 16:33:09 EST 1998 | Earl Moon

| | | Cpk's on top flight ovens (e.g., Conceptronics, Heller, Electrovert, Vitronics) vary wildly, from 1 to 2+, between different supplers. The suppliers don't seem to understand Cpk's. A supplier's rep whose oven has a Cpk of 1.0 told me: | | 1.

Re: Reflow Oven Evaluation Using Cpk

Electronics Forum | Sat Mar 21 16:37:22 EST 1998 | Earl Moon

| | Cpk's on top flight ovens (e.g., Conceptronics, Heller, Electrovert, Vitronics) vary wildly, from 1 to 2+, between different supplers. The suppliers don't seem to understand Cpk's. A supplier's rep whose oven has a Cpk of 1.0 told me: | | 1. C

Wave Soldering Ceramic PCB's

Electronics Forum | Wed Aug 08 21:18:15 EDT 2001 | davef

Get-out the razor blades, bud. You could run that sukka for 6 sec dwell, cook breakfast on it, and you still will not get fill. [Hole file that is, breakfast will go along ways if peckish, though.] You could fire-up the depleted ozone rework gun [

Placement Program Tweaking

Electronics Forum | Fri Oct 19 17:41:21 EDT 2001 | Stefan

I used to love tweaking. I tweaked and tweaked until I got a master degree in tweaking. But than I had to teach others how to program a board and avoid tweaking. After all it does not go quite conform with ISO and other quality approaches. I investig

Where's The Drill? ... or responsibility

Electronics Forum | Fri Nov 23 05:52:45 EST 2001 | Wolfgang Busko

What Claude is saying may be right. But looking at it a bit different from the view of "senior management" this should be interpreted as depending on the salary the work itself is different and therefore the responsibility is different. It doesn�t na

stencil printing parameters

Electronics Forum | Wed Mar 27 16:54:47 EST 2002 | davef

STARTING RANGES * Pressure � 1 pound/inch of blade (metal); 1.6-3 pound/inch (plastic) * Speed - 0.5 to 3 inch per sec [for standard pitch]; 0.5 to 1 inch per sec [for fine pitch] Your paste supplier�s recommendation is a good place to start. * Sepa

AXI and AOI

Electronics Forum | Tue Jul 09 15:20:19 EDT 2002 | pjc

When you look at the capabilities of Combo machines they tend to sacrifice performance when compared to separate X-ray and AOI machines, meaning they don't do either the X-ray or AOI operations as well as a machine that was designed to do only one. A

No Clean Selective Solder

Electronics Forum | Thu Aug 01 13:10:46 EDT 2002 | johnw

Chris, I don't know what machine your using, but we're also playing with one at the moment and don't see any problems with micro solderballing as far as I'm aware (I'll double check tomorrow thou!) We're using Kester 977 with it and don't have a pro

Rating SMT Machines

Electronics Forum | Mon Oct 28 08:05:41 EST 2002 | Bob...

Not saying anything new here. I agree with all the comments posted. I have worked in the industry for over 20 years and have experience on all but Mydata. Which machines are you looking at? Fuji CP3’s were too maintenance hungry, CP4.3’s bullet pro

Foam Fluxer - Porous Cylinder

Electronics Forum | Thu Dec 26 16:51:47 EST 2002 | davef

First, an earlier poster suggested using DI water. We are NOT excited about DI water with a NC fluxer, unless DI water is the proper flux thinner. Second, as you inplied, the maintenance steps you take should vary according to the amount of time th


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