Power Electronics / Power Management


Barrier rectifiers

3 August 2011 Power Electronics / Power Management

Diodes Incorporated has announced the first devices in a family of super barrier rectifiers (SBR) designed for automotive applications. Claiming a lower forward voltage drop, improved avalanche rating and higher safe operating area (SOA) than alternative Schottky or ultra-fast diode alternatives, these rugged rectifiers are intended to enable automotive designers to increase the reliability of motor control, display panel and LED lighting circuits.

Utilising Diodes’ patented SBR technology, the AECQ101 qualified SBR20A60CTBQ, SBR30A45CTBQ and SBR3045CTBQ rectifiers handle output currents of 20 A and 30 A and are provided in the industry standard TO-263 package, while the SBR1045D1Q is rated for 10 A and comes in the slightly smaller TO-252 package.

The SBRs’ low forward voltage means circuit power efficiency can be improved and cooler operation achieved. The resulting improvement in reliability is further increased by the devices’ high reverse avalanche rating, which provides protection against transient voltage spikes, and its lower reverse leakage which provides a higher SOA and guards against thermal runaway in high-temperature operating conditions.

For more information contact Andrew Athanasiou, Arrow Altech Distribution, +27 (0)21 555 1884, [email protected], www.arrow.altech.co.za



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