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FTang's avatar
FTang
Icon for New Contributor rankNew Contributor
4 years ago

Cisco project 5CSTFD55F3117NF impedance abnormal

flying probe test detected the impedance to GND on net "P1v1_FPGA" lower than normal value. NG value is 42 ohms. Normal value is 190 ohms. 2 pcs D/C2049 were found issue at our NPI project nee...
Zawani_M_Intel's avatar
Zawani_M_Intel
Icon for Frequent Contributor rankFrequent Contributor
4 years ago

Hi Fairy,


VCC1-26

VCC_HPS1-13


Vcc to GND lower than usual issue is highly suspected caused by an EOS event. This may be caused during reflow or just by someone touching the device or board without discharging themselves.


In order to avoid electrical damage, the device should always be handled in a static-free environment and all the input signals should remain within specified limits, as recommended in the PSG Data Book and associated application notes, at all times.


For your information, EOS is fall under mishandling issue.


Wani