Electronics Forum: rework (Page 260 of 293)

SMT hand soldering on HASL or Ni-Au boards?

Electronics Forum | Tue Apr 03 22:03:18 EDT 2001 | davef

With friends like you, who needs enemies? I�d guess that the perceived benefits of flat pads for your 20 mil pitch and below components counter-balance the higher cost, gold being a solder pot contaminant, limited solder mask compatibility, potentia

PCB Trouble shooting Lab

Electronics Forum | Tue Apr 17 09:38:04 EDT 2001 | CAL

With some help from our good Friends at Agilent Technologies our RF Lab includes testing up to 100GHz. Equipment includes Vector network analyzer, signal analyzer, dual channel power meter, noise filter meter, advanced impedance analyzer (including

Re: Lead-free soldering training.

Electronics Forum | Tue Nov 28 12:00:33 EST 2000 | rabell

Deon, my first response is YES - big time. You are correct that there are some massive issues here. For one thing, lead free solders are only one solution, as conductive epoxy has also been put forward. This was demonstrated on the TAC line at Ne

IPC-7912 DPMO

Electronics Forum | Tue May 08 19:28:29 EDT 2001 | mparker

Received my copy of the standard about a month ago. Seems straightforward and gets away from the percentage nightmare. Mark Twain said it best with "There are 3 kinds of lies in this world - lies, damn lies and statistics!!" Now I have some nagging

Underfill Inspection Criteria

Electronics Forum | Tue Jun 05 03:56:52 EDT 2001 | JohnW

Flip Chip/uBGA Underfill Visual Standards The aim of this document is to produce some draft text and then select photographs to make up a draft visual standard for inspection. There is also a need to produce some reference material for C Scan image

Cracked SMT Capacitors

Electronics Forum | Mon Jun 18 01:09:03 EDT 2001 | Dean Stadem

Igmar, If these parts are epoxied in place, and subsequently wave soldered, I would bet you a cup of coffee that they are cracking due to the thermal shock of the wave. Typically there is a valley or dip in the temperature after the pre-heat in the w

Mixing no-clean solder with activated

Electronics Forum | Mon Jun 18 17:41:07 EDT 2001 | genny

Hi, I put this on the technet forum, and I know some of the same people are here, but I thought I might catch others here as well. We have PCB's which are populated at the CM level with no-clean solder paste. However in house we use a solder wire s

repair the BGA/CSP device

Electronics Forum | Sat Jul 14 08:56:39 EDT 2001 | davef

Cal is right on target. I'll expand on his points. BGA solder perform suppliers: * Winslow Automation: http://www.winslowautomation.com/ * Galahad 12784 Tulipwood Circle Boca Raton, FL 33428 561-487-0271 galahad.inc@usa.netemail: BGAKIT@concentric

Re:OK BGA-REWORK MACHINES OLD AND NEW

Electronics Forum | Mon Jan 31 13:34:43 EST 2000 | PAUL WOOD

HELLO CUSTOMERS OF OK LATEST INFORMATION UPDATE WITH REFERENCE TO OLD BGA 2000 MACHINES WHICH ARE NOW 6YEARS OLD MANY NEW INVENTIONS WHICH HAVE TAKEN PLACE CAN BE PURCHASED FROM METCAL TO BRING YOU TO THE FOREFRONT OF TECHNOLOGY.(PATENTED TO ) BGA 30

Re: Via-in-pad

Electronics Forum | Tue Jan 25 21:59:44 EST 2000 | Dave F

Michael: On reliabiliity, consider that: � IPC-SM-782, "Surface Mount Design And Land Pattern Standard" and IPC-D-279, "Design Guidelines for Reliable Surface Mount Technology Printed Board Assemblies" specifically describe via in pads as "poor des


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