Hi,
Once I bought IRF840 which was 2.5 times expensive than IRFz44. And its manufacture is unknown like it's marked as "IRF840 Y64K DK". IRF840 is expensive because it's very faster like 10MHz or less.
But seeing its unusual marking, I suspect that it might be a counterfeit part (maybe have slower chip inside instead of real chip of IRF840) to earn 2.5 times more.
I have one genuine IRF830 (almost same feature as IRF840) made by ST semiconductor. So to test the genuineness of the mosfet I bought with unknown marking, I want to check its gate capacitance (I cannot apply the mosfet in the device because I have not made the device, just planning) and want to compare with genuine IRF830 fast MOSFET and with IRFz44 slower too.
Can I check its gate capacitance by using a capacitance meter to Gate and Source pin simple as measuring any discrete capacitor? (maybe asking silly but I want to know about the unknown IRF840, I bought)
Once I bought IRF840 which was 2.5 times expensive than IRFz44. And its manufacture is unknown like it's marked as "IRF840 Y64K DK". IRF840 is expensive because it's very faster like 10MHz or less.
But seeing its unusual marking, I suspect that it might be a counterfeit part (maybe have slower chip inside instead of real chip of IRF840) to earn 2.5 times more.
I have one genuine IRF830 (almost same feature as IRF840) made by ST semiconductor. So to test the genuineness of the mosfet I bought with unknown marking, I want to check its gate capacitance (I cannot apply the mosfet in the device because I have not made the device, just planning) and want to compare with genuine IRF830 fast MOSFET and with IRFz44 slower too.
Can I check its gate capacitance by using a capacitance meter to Gate and Source pin simple as measuring any discrete capacitor? (maybe asking silly but I want to know about the unknown IRF840, I bought)