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Testing Procedure
Using a 12V source and a automotive 12v light bulb:
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- connect negative to Source(S)
- connect voltmeter as shown
- connect the + side of the voltmeter to Drain (Bulb should be off)
- connect the + side of the voltmeter to Gate (will activate the mosfet)
- connect the + side of the voltmeter to Drain (Bulb should be ON)
- record voltage
Testing IRFP260 (Fake)
Measurements
Voltage: 12.09v
...
R(ds) = 0.055 ohms
Result
FAKE!
Testing IRFP260 (Real)
Measurements
Voltage: 12.06v
Current: 2.00A
Voltage Drain to Source: 0.075v
Calculated R(ds)
R(ds) = Vds / I = 0.075v / 2.00A = 0.0375 ohms
Datasheet Specs
https://www.vishay.com/docs/91215/91215.pdf
R(ds) = 0.055 ohms
Result
Real!
References
| Reference | URL |
|---|---|
| Real vs Fake MOSFET | How to identify a Fake Transistor? | MOSFET Test | https://www.youtube.com/watch?v=XXcEgddzjnI |
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