Varistors(SMD) Countermeasure for Surge Voltage and Static Electricity AVR Series AVR-M, AVRL Types Varistors are voltage dependent nonlinear resistive elements with a resistance that decreases rapidly when the voltage is over the constant value. Varistor is equivalent with Zener diode of two series connection. Therefore, do not have polarity. FEATURES ? 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 series (6.8 to 39V). Low capacitance items are available in series (1.1pF to). World’s smallest 0603-, 1005-, 1608-, 2012-chip types and 1410-array type are available in series. ? Excellent mount reliability. Good for Pb-free soldering. Adopted (Ni/Sn) electroplating. Achieved good solderability and solder heat resistance. ? Can replace a Zener diode + capacitor combination. Reduced footprint and total mounting cost. APPLICATIONS ? Electrostatic absorption ? Pulse noise absorption
