Amol, do you have measurement quality data on your weighing technique? If
the uncertainty in your weight (mass) measurement is not much less than
the change you need to detect, your efforts will be in vain. Lou

Louis Hart
Technology Transfer Specialist
National Technology Transfer Center
316 Washington Av
Wheeling, WV 26003
304-243-2553
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[TN] Measuring component and circuit board weights






Dear Technetters,
How feasible is:
1. measuring the component weight as a quick indicator of its floor life
for MSL considerations, if the "dry" weight of the component is known?
2. measuring the PCB weight after multiple reflow cycles to determine
whether the laminate is approaching the end of its useful life?

is anybody out there actually using these metrics to draw valid
conclusions? If so, what scales are being used for the measurements?
(least count wise)

Thanks in advance,
Amol



 -----Original Message-----
From:   TechNet [mailto:[log in to unmask]]  On Behalf Of Paul Reid








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