Vishay Intertechnology Inc. has introduced a new series of voltage-dependent resistor (VDR) metal oxide varistors (MOV) certified for operation up to 125° C in accordance with UL 1449 Edition 4, VDE/IEC 61051-1/2. Designed to provide overvoltage and transient voltage protection in consumer goods and industrial applications, the Vishay BCcomponents VDRUS series offers 30% higher surge current capability than previous-generation devices.
Source: Vishay Intertechnology Inc.
Offered in standard 7 mm, 10 mm, 14 mm and 20 mm sizes, the devices consist of a high-purity zinc oxide disc with two solid copper leads or copper-clad steel wires with matte tin plating. The varistors' high-temperature performance is a result of their UL94-V0-approved, flame-resistant silicone lacquer coating, which provides electrical, mechanical and climate protection.
The VDRUS series is available with current surge capability from 1.8 kA to 13 kA, rated voltages from 115 V AC to 680 V AC, energy absorption from 19 J to 720 J and straight or kinked leads. The varistors are optimized for use in power controllers and input filters for appliances such as stoves and washing machines and for industrial applications including motor controllers, AC/DC converters and circuit breakers.
Restriction of Hazardous Substances (RoHS)-compliant and halogen-free, the devices are suitable for automatic pick and place mounting and compatible with wave soldering and pin in paste reflow soldering processes.
