Power Electronics
The devices are suitable for highvoltage electronic circuits in lighting ballasts and LED drivers industrial inverters and converters battery management systems and medical equipment Image courtesy of Vishay Intertechnology

The devices are suitable for high-voltage electronic circuits in lighting ballasts and LED drivers, industrial inverters and converters, battery management systems, and medical equipment. (Image courtesy of Vishay Intertechnology).

Thin Film MELF Resistors Provide Operating Voltages to 1000V

Vishay Intertechnology Inc. has introduced new high-voltage thin film MELF resistors in 0204 and 0207 case sizes. Designed for industrial, lighting, and medical applications with high stability and reliability requirements, the Vishay Beyschlag MMA 0204 HV and MMB 0207 HV resistors combine a robust construction with operating voltages to 1000 V.

Built on an advanced metal film technology, the devices are suitable for high-voltage electronic circuits in lighting ballasts and LED drivers, industrial inverters and converters, battery management systems, and medical equipment. In these applications, the resistors save board space and simplify designs by replacing devices in larger case sizes, multiple resistors in similar case sizes, and leaded resistors.

The MMA 0204 HV and MMB 0207 HV offer a resistance range from 340 kW to 10 MW with tolerance of ± 1 %, TCR of ± 50 ppm/K, rated power dissipation to 1.0 W at +70 ºC, and long-term stability down to < 0.5 % after 1,000 hours. Suitable for processing on automatic SMD assembly systems, the lead (Pb)-free devices are RoHS-compliant and halogen-free.

Samples and production quantities of the MMA 0204 HV and MMB 0207 HV are available now, with lead times of six to eight weeks for larger orders. Pricing for U.S. delivery only begins at $28 per 1,000 pieces. 

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