Comments :

------------------------[ Original Message ]--------------------
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From		: "BILL RUGG" <[log in to unmask]>
Date		: Tuesday, May 28, 1996 at 5:37:34 pm MDT

 - Hi

 I am trying to establish a PCBA flexure force level for compression 
connectors.  The compression connector and mating PCB surface is tin lead. 
The measured contact force per contact range from 170 to 280 grams. The 
force generated a 0.57% Bow and Twist after soldering which has some 
margin below the ANSI/J-STD-001 9.2.3 of 0.75% for SMT boards. Does anyone 
know of a solder joint or a assembled component stress guideline other 
than the J-STD-001 Bow and Twist Specification.

			Thanks,	Bill