Wolfgang: Sounds like gluteus maximus protection time.
1 "Maximum suitable temperature for the solder joint should be half the liquidous temperature" is a good rule of thumb. Where it came from, I don�t know. One place I�ve seen it repeated is: Hwang "Modern Soldering Technology �" 3.5.1. 2 Coombs, 8.8.5 talks about FR4 maximum continuous operating temperature of 130�C for electrical parameters and 140�C for mechanical parameters, but that�s pretty generic stuff. Realistically, your board supplier probably knows more about this than anyone. 3 Solder joint strength will vary with lead geometry, solder volume, solder type, lead metal/metallization, the way the product is operated, the way the test is done, etc. Realistically, you probably know more about this than anyone.
My2�
Dave F
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