Electronics Forum: 10000000 (Page 1 of 1)

Intermettalic layer analyssis

Electronics Forum | Fri Sep 28 16:49:48 EDT 2007 | davef

good * No IMC => bad Intermetallic growths are diffusion limited, and therefore the thickness of the intermetallic is given by: z^2 = (Do)(t)exp[-Q/RT] Where Do (m^2 s-1) is the diffusion coefficient, T(�K) is the temperature, Q (J mol-1) is the act

Gold Embrittlement

Electronics Forum | Tue Jun 01 10:11:00 EDT 2004 | davef

Intermetallic growth is a diffusion process, the thickness of the intermetallic is given by: z^2 = (Do)(t)exp[-Q/RT] Where Do (m2 s-1) is the diffusion coefficient, T(�K) is the temperature, Q (J mol-1) is the activation energy and R (8.314 J mo

Intermetallic formation

Electronics Forum | Wed Oct 10 20:58:30 EDT 2001 | davef

Several points are: * There�s quite a bit of background on IMC in the fine SMTnet Archives. I�ll try not to duplicate it. * If you have a smooth and well-formed solder connection using fairly common materials, you assuredly will have IMC. Any evide

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