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| From [log in to unmask] Wed Jun 5 17: |
08:46 1996 |
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Comments :
Hi again could some one possibly give me a clue???
------------------------[ Original Message ]--------------------
To : <[log in to unmask]>
Cc :
From : "BILL RUGG" <[log in to unmask]>
Date : Wednesday, May 29, 1996 at 9:16:17 am MDT
Comments :
------------------------[ Original Message ]--------------------
To : ISMTP@Longmont64@MCO[[log in to unmask]]
Cc :
From : BILL RUGG@ENG12@MCO
Date : Tuesday, May 28, 1996 at 2:13:05 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
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