ITEM NAME:LCR-T4 Mega328/168 Transistor Tester Diode Triode Capacitance ESR Meter Digital LCR-T4 Mega328/168 Transistor Tester Diode Triode Capacitance ESR Meter Digital a.imagelink a:hover.imagelink {color:#000006;.Inductors, capacitors, diodes, dual diode, mos, transistor, SCR, the regulator, LED tube, ESR. diode (including double diode), thyristor, transistor, resistor and capacitor and other components. 3:Can detect the transistor, MOSFET protection diode amplification coefficient.