Electronics Forum | Fri Jun 02 17:43:17 EDT 2000 | Dave F
James: I believe Delmat is a proprietary product. Check with some of the solder fixture fabricators in the archives. Continuing, I would not select knowingly Delmat as a board stiffener. It's a composite material similar to oriented strand board
Electronics Forum | Mon Mar 26 06:10:54 EDT 2007 | RH
Dennis: Have you considered Asahi as a solder ball source? Asahi Technologies has helped produce over 90 million Lead Free PWB assemblies worldwide and has extensive experience in Lead Free solder processes at Sony, Hitachi, and Thompson. Solutions
Electronics Forum | Wed Oct 26 10:40:43 EDT 2005 | patrickbruneel
Jimmy, We've been soldering tin plated components and Ni/Sn (100% Tin) boards with leaded solder in the 80's in hirel and military applications. We never experienced reliability issues with the mechanical or electrical properties of the solder joint
Electronics Forum | Fri Jan 15 09:27:18 EST 1999 | Earl Moon
| I saw the problem of void in solder bump or in lead less component or some BGA. But I didn't have standard specification of that void is accept or reject? Do any body have the better idea or suggestion of the criteria ? | | Thank you, | Wirat
Electronics Forum | Tue May 27 12:40:50 EDT 2003 | davef
Hi Bill You said, "silicon". We assume by your discussion that you ment to say, "silicone". For background on silicone and soldering, check with Dow Corning [517-496-6000]. They make a OS2 [VOC-free] silicone stripper and should be able to give y
Electronics Forum | Tue Jan 29 21:23:55 EST 2008 | molos21
Hi everyone, Is there any instrument that you are using to measure the tensile strenght of a solder joint?. I would like to measure that from smd and thru hole parts. I just want to take a few samples to verify the mechanical properties. Thanks
Electronics Forum | Thu Jun 04 02:16:43 EDT 2020 | SMTA-Robert
Looking for CTE and young's modulus values for aluminum backed PCB for solder joint predictions. The data sheets are a bit sparse, and the weighted average method somehow doesn't feel appropriate. Any advice is welcome. Thanks!
Electronics Forum | Wed Feb 07 16:20:46 EST 2007 | davef
Bismuth is a low-melting metal with poor mechanical properties; if you melt the bismuth wire into a standard tin-lead solder joint, then the bismuth alloys with the solder, and forms a material that will crumble if you scrape it with your fingernail.
Electronics Forum | Thu Mar 01 19:27:48 EST 2007 | Wayne
Yes, I am currently using Viromet 347 at the moment for my SMT lines. 100-150, 35 sec 150-207, 40 sec 207-above, 80 sec peak temp: 225 deg C. It is compatible to SAC paste in term of solderability and wettability. But in term of mechanical property (
Electronics Forum | Sat Sep 25 08:59:59 EDT 2004 | davef
IPC-HDBK-830, Guidelines for Design, Selection and Application of Conformal Coatings says: A conformal coating may have several functions depending on the type of application. The most common are: * Inhibit current leakage and short circuit due to h
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