Electronics Forum: ipc (Page 90 of 282)

Rework of SMT components

Electronics Forum | Wed Nov 30 08:00:59 EST 2005 | davef

Look here: http://www.circuittechctr.com/guides/guides.shtml Also consider IPC-7711/7721: Rework and Repair Guide

PVA Conformal Coating Machine

Electronics Forum | Thu Dec 15 08:55:56 EST 2005 | Amol Kane

unless of course, it can be proved that the coating sticks to the uncleaned board and shows no defects as per IPC specs....but it doubt it

Solderability test method (LF) for bare PCB brd

Electronics Forum | Mon Jan 23 20:58:08 EST 2006 | davef

J-STD-003B - Solderability Tests for Printed Boards is currently a "Working Draft". Look here: http://www.ipc.org/status.asp

Stencil apertures IPC design

Electronics Forum | Tue Feb 28 07:47:33 EST 2006 | davef

The key driver to aperture design is to assure a fillet of the proper height for the component temination and the reliability of the end-product customer use environment.

Voids found

Electronics Forum | Thu Mar 02 04:44:48 EST 2006 | EC

Hi, We found voids on BGA. Understand IPC stated as long as not more than 25% should be fine. So, is there any standard stated how many voids in BGA can be allow. Appreciate your help......

LLP Device

Electronics Forum | Wed Mar 08 18:09:52 EST 2006 | jax

Part is most likely a QFN package. IPC-610-D has standards on solder quality for this new type of package.

Land Pattern Discrepencies

Electronics Forum | Mon Mar 27 22:41:59 EST 2006 | davef

Design to IPC standards unless a supplier provides documentation on why a change to the standard was necessary. Throw all supplier data sheets in the trash.

IPC-A-610D Question

Electronics Forum | Wed May 03 15:45:44 EDT 2006 | Tim

Brett, I've found out that it is not a defect with respect to Rev. D. You are correct about the thermal expansion but due to the size of the plastic SOIC's and SOT's they have eliminated it as a defect. Thanks, Tim

This is a new one

Electronics Forum | Tue May 16 18:01:50 EDT 2006 | russ

Steve just mentioned the 782 for ammo to customer, we usually get "it doesn't meet IPC" so we then say it was not designed to. let the pissin contest begin! Russ

Lead free contamination at reflow

Electronics Forum | Thu May 18 13:04:23 EDT 2006 | slthomas

Now THAT'S some good stuff right there. Earl just comes here to release his inner comedian because it's frowned upon by his upper crust IPC crones.


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