Electronics Forum | Sun Jul 08 23:05:57 EDT 2001 | Darby
John, Tenryu/Amistar/i-Pulse made stainless replicas of feeder tape for various pitches and feeder widths. Part # for 0402 is "MT-0802" ( 8mm wide x 2mm pitch ). Standard 8mm wide tape is " MT-0804". If you can't get any of these, spend an hour on yo
Electronics Forum | Fri Jul 06 03:23:01 EDT 2001 | kennyhktan
Hi there Steven ! Please allow me to share some of my problem we're facing here with you. Here are a few points that I suggest you should check on your current process:- (1)PCB - Component land partern design ? It is per IPC spec ? - Mask
Electronics Forum | Thu Jul 12 10:32:59 EDT 2001 | Hussman
Wow, what a string of answers and nobody brought up the easiest way to eliminate solder balls. Yes, the paste being squished under the part does reflow and work it's way out to the side during reflow. I did a 5 week study on this (when I was a bori
Electronics Forum | Fri Jul 06 18:19:41 EDT 2001 | davef
The senior staff have the pictures!!! Oh, that�s just GREAT!!! What the blank are these gerbils doing with �em? Nothin�!!! They�re probably sitting in a folder on whatzisname�s desk, until he has "a change to study them more". [Like he�s going t
Electronics Forum | Fri Jul 06 18:26:20 EDT 2001 | davef
Groovy!!! [Sorry, I always wanted to say that.] As background, look at: * SMTnet Archives * "Pocket Guide to Excellent V-Scoring" and "Scoring FAQ's" [http://www.accusystemscorp.com] they cover all of the dimensions and give a short summary on the
Electronics Forum | Thu Jul 12 21:57:18 EDT 2001 | mugen
Finally someone with great sense of what needs to be done! and wonderful sense of where we need to go.... If 2D was sufficient, HE would have made this physical world of ours 2D too.... (tongue twister, nay...) I agree fully with this Steve guy, 10
Electronics Forum | Wed Jul 11 20:17:05 EDT 2001 | davef
I�ve written a review to be published in an up-coming SMTnet Newsletter of �Printed Circuit Assembly Design� Leonard Marks, James A. Caterina [Hardcover - 368 pages (July 26, 2000) McGraw Hill Text; ISBN: 0070411077]. In short, � In �Printed Circui
Electronics Forum | Thu Jul 12 21:41:35 EDT 2001 | mugen
A) Questions: 1) What sort of pallet materials used? 2) what PCB thickness & LxW size? 3) what stencil type & thickness used? 4) what profile type used (peak deg-C)? 5) any peak Deg-C contraints for the components SMT onto the PCB? B) We use pallet
Electronics Forum | Sat Jul 14 10:34:42 EDT 2001 | davef
This portion of SMTnet is intended for people whining about the operation of the forums and what-not. A lot of the people asking questions like your use the production forum. We don't have an air knife on our wave, but I recall some threads on SMTn
Electronics Forum | Mon Jul 16 21:39:40 EDT 2001 | davef
The method you suggest is about the only way to �clean-up� this terrible situation. Realistically, this is a "memory" type condition induced by design, build symmetry, "cross ply construction", excessive cool down rates during lamination or reflow a
