Electronics Forum: iron (Page 66 of 71)

Re: SM Headers & Connectors

Electronics Forum | Tue Apr 14 15:50:45 EDT 1998 | Bob Barr

Justin, Thanks for the response to my dilemma. For once it's not just me! The parts seem perfectly solderable, but I will try the modification to the profile you suggested. I wonder if the retention clips may be letting loose from the holes they a

Re: Selective Wave Soldering

Electronics Forum | Tue Jan 12 17:51:41 EST 1999 | Tom Gervascio

I've been using selective soldering process for about 18 months. The major problem concerns tight spacing- the distance between the SMT pads to be masked and the thru hole leads to be wave soldered should be no less than 0.150 inches. Keep the wall

Re: I am looking for training for SMT process.

Electronics Forum | Wed Feb 18 09:27:22 EST 1998 | SMT-ASSY

Good morning Larry, SMT-ASSY offers training for PTH and SMT soldering and rework, moreover we also offer training such as the SMT process (using production equipment such Vitronics oven etc.), Design for manufacturing, Design guidelines and other bl

Ag-plated LED dipping - high level of Cu and Ag

Electronics Forum | Wed Aug 15 16:04:23 EDT 2001 | davef

First, responding to your question � Several things on copper dissolution in solder are: * A 50um copper wire will dissolve in 60Sn / 40Pb solder at: - 200�C solder in 55 seconds; - 250�C solder in 20 seconds; - 300�C solder in 5 seconds; - 350�C so

Wetting problem of PCB after reflow soldering

Electronics Forum | Fri Sep 14 15:31:02 EDT 2001 | davef

How in earthly heaven would someone else have a report analyzing the defects on your boards? Among the good failure analysis labs that can assess situations like yours are: * Robisan Laboratory 6502 East 21 St Indianapolis, IN 46219 317-353-6249 fax

Type K thermocouple for Super M.O.L.E

Electronics Forum | Mon Nov 05 20:31:09 EST 2001 | davef

Most people do not intend to �solder� Type K thermocouples. They use solder to �attach� the thermocouple. Search the fine SMTnet Archives for a posting by Chrys Shea. 1 Common thermocouple types commonly used for thermal profiling are: * Type K �

PTH Hand Soldering and Rework Training

Electronics Forum | Tue Jan 14 20:32:41 EST 2003 | davef

There's just about 4 beezillion companies that give solder training. Some are: * BEST Rolling Meadows, IL 847-797-9250 Bill Westmoreland (bwestmoreland@solder.net) http://www.solder.net/ * Circuit Technology 340 Raleigh St Holly Springs, NC 27540 (

Cleaning after repair.

Electronics Forum | Thu Jan 23 20:57:33 EST 2003 | davef

If the flux was not activated (ran in another area of the board), the flux should be removed from the board. Any Comments? A: We agree. In order for its �benigness� to take effect, NC flux is affected by: * Type of flux * Amount of flux * Proper ac

Palladium poor wetting

Electronics Forum | Tue May 23 21:14:22 EDT 2006 | davef

First, where the temperatures that aare mentioned in the original post measured? Second, it sounds like the PdAg component terminations are not seeing enough heat [your soldering iron touch-up proves this]. Your 232*C peak is the absolute minimum s

Stainless Steel tabs in brd assemblies

Electronics Forum | Thu Jan 03 17:00:20 EST 2008 | davef

Recommended procedure for soldering stainless steel [Atlas Steels Australia]: * Surfaces must be clean and free of oxidation. * A rough surface improves adherence of the solder, so roughening with grinding wheel, file or coarse abrasive paper is reco

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