The AEC-Q101-approved SiGe rectifiers with 120, 150 and 200V reverse voltages combine the high efficiency of their Schottky counterparts with the thermal stability of fast recovery diodes. 

Targeting automotive, communications infrastructure and server markets, the 1.0 to 3.0A PMEG SiGe rectifiers are suitable for high-temperature applications like LED lighting, engine control units or fuel injection. The low leakage devices can extend a safe-operating area with no thermal runaway up to 175° and, at the same time, be used to optimise a design for higher efficiency which is not feasible using fast recovery diodes commonly used in such high temperature designs, pointed out the company. By boosting a low forward voltage (Vf) and low Qrr, the SiGe rectifiers have an advantage of 10 to 20% lower conduction losses.

The PMEGxGxELR/ PMEGxGxELP rectifiers are housed in size- and thermally-efficient CFP3 and CFP5 packages that have become the industry standard for power diodes. The packages’ solid copper clip reduces thermal resistance and transfer of heat into the ambient environment is optimised, to allow compact PCB designs. Pin-to-pin replacements of Schottky and fast recovery diodes are possible when switching to SiGe technology, adds the company.

The first four AEC-Q101-qualified 120V SiGe rectifiers are in mass production now. Eight 150 and 200V devices are sampling now.