Electronics Forum: engineering (Page 205 of 261)

Re: Film Capacitors - Tombstoning or Drawbridging Problems

Electronics Forum | Mon Mar 30 07:44:12 EST 1998 | Earl Moon

| | | | | We are having some problems with "drawbridging" on 0805 film capacitors. | | | | We have already reduced the pad width from .050" to .040" based on input | | | | from vendor. Defects appear to be random as far as location on the PWB and d

Re: Reflow Oven Evaluation Using Cpk

Electronics Forum | Wed Mar 18 13:21:26 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. Cpk's

Re: Reflow Oven Evaluation Using Cpk

Electronics Forum | Thu Mar 19 11:44:00 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

Re: Why is The Forum so slow now?

Electronics Forum | Tue Mar 17 09:26:18 EST 1998 | Justin Medernach

| Maybe I'm doing something wrong, but it seems to me that The Forum takes a lot longer to open up now. It also takes a lot longer to get back to the main Forum page, after reading an individual message, and hitting the "BACK" button. What's up? Is

Re: Screen printing the board from........

Electronics Forum | Fri Mar 06 10:30:46 EST 1998 | Ron Costa

| | | Hello everyone! | | | Does any know anything about bare board size variations? | | | Is there a spec. or tolerance? | | | I'm running small lots of boards and during the screen printing process | | | I find that I cannot paste each board perfec

Re: Forced Air Convection Ovens

Electronics Forum | Sat Jan 10 15:19:28 EST 1998 | Jon

Check out the web site www.conceptronic.com I think you will see that the Conceptronic ovens are the best and most reliable over the long haul. Micron CMS has over thirty five of them and has stated that they were the most reliable and best vendo

Packing material, the right track ?

Electronics Forum | Thu Aug 23 20:51:15 EDT 2001 | davef

Every thing you need is in "links" here http://packaging.hp.com/. The only thing you need to do now is find it. Ah, so much information, so little time. Yeh yeh yeh, nice little ESD bags are good. Er, maybe sealed barrier bags might be better. E

BGA Underfill

Electronics Forum | Mon Aug 27 16:38:06 EDT 2001 | seand

Hey guys, Given the fact that i know very little about your product I would say put the burden on the apps engineers at Speedline-Camalot(www.speedlinetechnologies.com). General rules of thumb may not apply depending on your material selection and

MONSTER board equipment...

Electronics Forum | Mon Aug 27 15:50:05 EDT 2001 | seand

Hello Everyone, The MPM UP 3000 may be a good bet for your Screenprinting application and I am aware that there are a few in inventory at Speedline Technologies (MPM) that you should be able to get with a warranty for a good price. I know wide vers

glue measurement

Electronics Forum | Fri Oct 05 16:05:58 EDT 2001 | seand

Hello everyone, Your chief variable here is going to be your epoxy. Different materials react accordingly to various inspection methods but, DEPENDING on your print parameters and material, you may be able to utilize an inline inspection machine.


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