4. Field Induced Model (FIM) Discharge: Methods: FIM discharge testing ensures tools do not expose workpieces to ESD events. The test simulates an operator fastening a circuit card: the screwdriver is lifted by its handle from a charge plate set to ±1.0 kV and then brought into contact with a grounded metal plate while monitoring for discharge. A compliant tool dissipates its charge before contact, eliminating the risk of an ESD event at the workpiece.
RMV Results: No ESD events were observed across five screwdriver types. Interpretation : Screwdrivers dissipate charge prior to contact, preventing hazardous discharges to sensitive assemblies.
GROUNDED DISCHARGE CIRCULAR PLATE
SCREWDRIVER ON CHARGE PLATE
SCREWDRIVER
MV/V
Grounded Screwdriver to Charge Plate
3250
NA
NA
FGA-ESD @ 50% RH
0
1000V
0V
FGA-ESD-HVG @ 50% RH
0
1000V
0V
FG-Size B @50%RH FG-40i ESD & FG-125i ESD FG-Size A @50%RH FG-8i ESD & FG-40i ESD FG-Mini @50%RH FG-25z ESD & FG-50z ESD
0
1000V
0V
0
1000V
0V
0
1000V
0V
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