Electronics Forum: 1000 and ungar (Page 3 of 6)

Re: Discoloring of Soldermask and silkscreen

Electronics Forum | Mon Apr 19 20:49:13 EDT 1999 | Dave F

| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185

Factory Lighting - specs and measurement ?

Electronics Forum | Wed Jun 12 11:11:50 EDT 2002 | davef

J-STD-001 guideline of 1000 lm/m^2 [93 fc] seems high, but it is the minimum level of illumination that operators and inspectors should have to perform their tasks. IESNA LPD Architectural Recommendations Type of Facility||General Area percent / fc

kapton dots and liquid solder mask

Electronics Forum | Wed Aug 10 11:57:16 EDT 2005 | pr

Is the peelable mask (put on by the boardhouse) flat on the surface of the pcb? If so can you tell me the material name, so maybe I can find a picture? We have to print adhesive on the board, so the mask has to be flat. That is why Kapton from the b

Data for PPM and DPMO Calculation

Electronics Forum | Thu Jul 03 08:53:27 EDT 2008 | rgduval

I would...and then use the data of the known issues as part of the secondary analysis. The defect is a defect, one way or the other. You can use the secondary analysis of your PPM numbers to continue to drill down in the process. If your overall P

long connector and MG1 Yamaha / Assembleon

Electronics Forum | Mon Sep 04 10:15:41 EDT 2023 | tommy_magyar

As far as I can remember, these always arrived in flexible plastic trays. The trays we designed were made of Durastone. The parts were then transferred at a tape & reel facility from tray to tray every 1000x connectors. If these are high volume for

Fountain Wave Soldering and Repair/Rework Equipment

Electronics Forum | Thu Jan 21 09:27:33 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, and all the re

YesTech F1 AOI false calls and misses

Electronics Forum | Wed Apr 04 13:33:12 EDT 2012 | rway

We currently have 2 M1 systems. Our false call rate has never been has high as you suggest. There is something wrong with your program and/or inspection algorithms, as you probably already know. You should be somewhere between 1000-1500 vcpmo (fal

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: 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: Solderability of BGA and PCB

Electronics Forum | Mon Nov 27 17:50:01 EST 2000 | Dave F

Mike: It gets more humid in the winter? [I can see it�s true (not that I�d doubt you) cause I�m looking a a humidy map of the USA, right now] How does that work outin Californy? [Do the ocean breezes move the humid air in-land in the summer? Er w


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