Tandem diodes offered as green alternative to silicon carbide
STMicroelectronics has unveiled its second generation of tandem diodes, which it says enable designers to enhance the energy efficiency of equipment such as power supplies, solar inverters and e-transportation charging points.
Compared to first-generation devices, the new diodes have even lower reverse recovery charge to minimise switching losses, further extending their efficiency advantage over standard ultra fast diodes.
The lower QRR also speeds up the fine tuning of circuit designs, enabling faster time to market. ST says performance approaches that of silicon-carbide diodes, which are typically at least 30% more expensive.
The STTH8T06DI and STTH8ST06DI are rated for 8A average forward current, while the STTH12T06DI is for applications up to 12A.
The devices have peak forward surge current ratings equivalent to those of ultra fast diodes and an operating junction temperature range of -40 to 175°C.
