New Industry Products

Vishay Releases Four New 600V PFC High-Frequency Rectifiers

April 27, 2008 by Jeff Shepard

Vishay Intertechnology, Inc. launched four new 600V FRED Pt Hyperfast rectifiers that are said to reduce switching losses in high-efficiency PFC and SMPS applications with their extremely fast and soft reverse recovery times, together with low forward voltage drop.

The new assembly layout diode products are claimed to represent the most efficient and cost-effective silicon-based solutions for high-efficiency applications, and are able to meet all of the most stringent regulations. The four devices are said to be optimized for high-efficiency PFC and high-power-efficiency SMPS applications, and as adaptors for desktop PCs, servers, wide screen PDPs and LCDs, hybrid systems, UPS, and solar power systems.

The four rectifiers complete Vishay’s offering of products specifically developed for CCM PFC applications, which includes the "X" and "H" series, and the "L" series specifically developed for DCM PFC applications.

The new 8-A 8STH06FP and 8S2TH06FP, and 15-A 15STH06FP and 15S2TH06FP Hyperfast tandem rectifiers deliver a reverse recovery time of 19ns and 20ns, respectively. The devices have a low forward voltage drop rating of 1.7V at 8A and 1.9V at 15A, allowing the devices to work at higher frequencies to increase the overall system efficiency.

The new rectifiers feature very soft recovery characteristics even at extreme high di/dt with minimum ringing. The devices offer an operating junction temperature of 175°C and are said to have an extremely low leakage current. Available in 2- and 3-pin TO-220 FULLPAK packages, the rectifiers are lead (Pb)-free and RoHS-compliant.

Samples and production quantities of the new Hyperfast tandem rectifiers are available now, with lead times of eight to 10 weeks for larger orders. Pricing for U.S. delivery begins at $0.86 per piece.