Electronics Forum | Thu Sep 14 10:27:30 EDT 2000 | Mark S
.... an 18-20 week lead-time is why we're doing this. Ideally I'd prefer to form them into gull-wing (except we'd have to do it by hand and that'd be difficult to control), but it's a hell of a lot quicker and more consistent just to run them throug
Electronics Forum | Mon Aug 21 19:35:51 EDT 2000 | Dave F
Kyung Sam Park: Sure, several causes of plastic QFP package delamination, other than humidity absorption, are: * Corrosion on component leads * CTE mismatch between leads and package materials * Package material adhesion strength degradation Wh
Electronics Forum | Mon Jun 19 21:29:41 EDT 2000 | Jack Hou
Hi, everyone, I'm an new engineer and in charge of SMT process. Now I want to apply DOE to printing process. some questions to ask you guys. 1. how many replications do i need in each run (L8) ? 2. after printing, except solder height, volume, what's
Electronics Forum | Thu Mar 16 09:01:28 EST 2000 | Ashok Dhawan
I am looking for suggestions on " How to remove solder Balls". We have some designs and tools where nothing can be done economically except to remove the solder balls manually. We are using "Probe" picks to do that job. Anyone who can suggest a bet
Electronics Forum | Tue Mar 06 18:57:48 EST 2001 | pzohbon
I am looking at putting a laser or ink jet marking system for barcoding of pcb's in our smt production area. As and inline system it will need the capability to handle different size boards. We use dark green pcb's except for couple red and blues m
Electronics Forum | Tue Nov 28 09:18:21 EST 2000 | rabell
I assume that you are referring to classroom or hands-on training facilities. Unfortunately, I do not have or know of such a comprehensive list. Our materials go worldwide, but generally they go directly to the manufacturer. In a couple of cases th
Electronics Forum | Mon Jan 17 08:16:57 EST 2000 | Michael Bryant
As a result of our recent upgrade, we are having trouble logging in users who don't except cookies. We are working to fix this problem as quickly as possible, but there is a way you can make it work in the meantime, if you wish. Simply go to your bro
Electronics Forum | Thu May 13 14:41:17 EDT 1999 | Michael N.
I need some pics or documentation on how a finish soldered joint looks like for SMT component. I have various people who supposedly says has knowledge with High Temp says my joint could look better. The joint looks shiny and great except for a grainy
Electronics Forum | Tue Mar 16 20:29:27 EST 1999 | Bob Bartolotta
In Section 5.1 Flux Residues, 5.2 Particulate matter 5.3 Chlorides and Carbonates & White Residues, I am assuming that these boards have been through some type of cleaning step. Hot water, saponifier, air dryed and the pictures illustrate unacceptab
Electronics Forum | Tue Mar 23 09:55:33 EST 1999 | Dan Hughes
| Al, | | In general, I would agree with Justin and Scott, with the exception that I don't feel a laser cut stencil is required when printing 25 and 20 or even 16 mil pitch. We make a good chem etch stencil that will print fine pitch great if you ev
