AVR-M1005C270M

(1/10) Varistors(SMD) Countermeasure for Surge and Static Electricity Conformity to RoHS Directive AVR Series AVR-M, AVRL Types Varistor (Variable resistor) is a nonlinear resistive element of the voltage dependence that resistance changes with applied voltage. Varistor is equivalent with Zener diode of two series connection. Therefore, do not have polarity. CURRENT vs. VOLTAGE CHARACTERISTICS Current(A) Positive direction 10–1 10–2 10–3 Zener diode /Vz:6.8V 10–4 10–5 Chip varistor /V1mA:12V –18 –14 –10 –6 –2 2 6 –10–5 10 14 18 –10–4 –10–3 Negative direction –10–2 –10–1 Voltage(V) EQUIVALENT CIRCUIT 2 Zener Diodes A capacitance content THE EFFECT OF THE VARISTOR WITHOUT VARISTOR A malfunction and failure of electronic equipment ESD, Surge voltage WITH VARISTOR Suppress abnormal voltage by inserting varistor in a circuit ESD, Surge voltage Power line Signal line IC ICPower line Signal line Insert a varistor between a line and ground : Chip varistor All specifications are subject to change without notice. 004-01 / 20071227 / e9c11_avr.fm (2/10) FEATURES No polarity, due to symmetrical current-voltage characteristics. Equivalent to anode common type Zener diode. Excellent electrostatic absorption capability. Response is as good or better than Zener diode. Keeps symmetrical current-voltage characteristics even after electrostatic absorption. Adopted the inner electrodes lamination structure. Wide range of varistor voltages are available in se...