Electronics Forum: insn (Page 1 of 1)

Re: Indium / Tin Intermetallics

Electronics Forum | Thu Aug 24 16:44:27 EDT 2000 | Dr. Ning-Cheng Lee

There is no IMC composition can be identified in phase diagram of In/Sn. There are some compositions such as In3Sn or InSn4 cited in earlier literature. Those composition should be regarded as approximate representation of solid solution of In/Sn. I

Indium / Tin Intermetallics

Electronics Forum | Thu Aug 24 13:18:24 EDT 2000 | Dave F

What are the primary indium (In) / tin (Sn) intermetallic compounds (IMC)? What are the drivers to the formation of In/Sn IMC? Copper / tin IMC are very bittle and, while necessary for proper solder connection formtion, are ment to be minimized. W

AuSn solder alloy

Electronics Forum | Tue Dec 30 21:14:22 EST 2003 | davef

You're thinking correctly. 80Au20Sn is incompatible with: * Sn/Pb * In/Sn * Sn/Pb/In * Sn/Pb/Bi Contact your solder supplier to obtain pictures of IMC.

Re: Solder Connection Environmental Screening

Electronics Forum | Thu Aug 24 13:51:24 EDT 2000 | Dr. Ning-Cheng Lee

Low temperature aggravates the mismatch in thermal expansion between solder and parts and between components and boards, therefore can induce earlier failure. The low temperature screening test should not be as effective when used on soft solders su

Re: Solder Phase Equilibrium

Electronics Forum | Thu Aug 24 17:08:58 EDT 2000 | Dr. Ning-Cheng Lee

Depending on the stress condition experienced by the solder joints. For joints under a greater stress, the time to reach equilibrium can be shorter. Of course, the change is also more significant in phase structure. For low stress conditions, it may


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