A circuit component tester includes a portable casing and a circuit provided within the casing. A plurality of leads are provided to electrically connect the circuit to a gate and two terminals of a circuit component under test. A test switch provided on the casing initiates application of test voltage to at least one of the two terminals of the circuit component under test. A gate switch provided on the casing initiates application of gate voltage to the gate of the circuit component under test. At least one of the test switch and the gate switch are operable to verify functionality of the circuit component under test.