Tool/software:
Dear TI Staff,
In current production we have issue on resistor R0402 for ICT test measurements on one of our products:
High Limit : 2.6780 kOhm
Measured : 2.7335 kOhm
Low Limit : 2.5220 kOhm
Golden Sample shows values:
High Limit : 2.6780 kOhm
Measured : 2.6297 kOhm
Low Limit : 2.5220 kOhm
The root cause of this problem is NA555. Because after cross check (replace components NA555 between good one and bad one products) wrong measurements moved on product which previously has Pass result.
the resistor (3,6k) has parallel connection with CONT (pin5) and GND(pin1) on NA555 what affect on resistor measurements.
So, we measure resistance between this pins and has next values:
For good component -> 9,5 kOhm
For “bad” component -> 11,04 kOhm
Good component MPN : NA555 TI45M ASVT
Bad component MPN : NA555 TI49M AGGR
Could you please support me with an input can explain those two differences, or does manufacturing components location does affect on the resistance?
Thank you so much for your support in advance,
Kind regards,
Hamed Ba alawi.
