Transistor Tester 1.44 Inch Screen Multi Functional Capacitor Resistor Mosfet Meter Diode Electronic Component Tester Item Type: Transistor Tester Material: ABS Model: P1 Display Screen: 1.44 inch Battery Capacity: Rechargeable lithium battery 300mAH x 1 (built in) Charging Specifications: USB Type C, 5V 1A Size: Approx. 71 x 87 x 28mm / 2.80 x 3.43 x 1.10in Category Range Explain Triode 10<β<600 Amplification factor hfe, base emitter voltage Ube, Ic/le, collector emitter reverse cutoff current lceo, lces, protecting diode forward voltage drop Uf Diode Positive voltage drop<4.5V Forward voltage drop, junction capacitance, reverse leakage current Zener Diode 0.01-4.5V (1-2-3 test area) forward voltage drop, reverse breakdown voltage 0.01-32V Reverse breakdown voltage (K-A-A test area) Field Effect Transistor JFET Drain current ld under gate capacitance Cg, Vgs, protecting the forward voltage drop Uf of the diode IGBT Drain current ld under Vgs, protecting the forward voltage drop Uf of the diode MIOSTET Open voltage Vt, gate capacitance Cg, drain source resistor Rds, protecting the forward voltage drop Uf of the diode Unidirectional Thyristor Turn on voltage<5V Gate voltage Bidirectional Thyristor Gate trigger current<6mA Capacitor  25pF-100mF Capacitance value, loss coefficient Vloss, internal resistor Resistor  0.01Ω-50MΩ Resistor value Inductance 10μH-1000μH Inductance value, DC Resistor Battery 0.1-4.5V Voltage value, positive and negative polarity