High-frequency rectifiers increase system efficiency

Malvern, Pa. — Vishay Intertechnology, Inc. has launched four new 600-V FRED Pt Hyperfast rectifiers that reduce switching losses in high-efficiency PFC and SMPS applications with their fast and soft reverse recovery times and low forward voltage drop ratings. These devices complete Vishay's product family 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 19 ns and 20 ns, respectively. This high switching performance is combined with low forward voltage drop ratings of 1.7 V at 8 A and 1.9 V 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, Vishay said. The devices offer an operating junction temperature of 175°C for more robust and more cost-effective design, and extremely low leakage current.

The four devices are 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. Available in 2- and 3-pin TO-220 FULLPAK packages, the rectifiers are lead (Pb)-free and RoHS-compliant.

Pricing: Starts at $0.86 each for U.S. delivery.
Availability: Samples and production quantities are available now with lead times of eight to ten weeks for larger orders.
Datasheets: 8STH06FP,
15STH06FP, and

Vishay Intertechnology ,

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