Archive : 28 April 2008 год

Vishay launched four 600-V FRED Pt Hyperfast rectifiers that reduce switching losses in high-efficiency PFC and SMPS applications. 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. The four rectifiers complete Vishay's offering of products specifically developed for CCM PFC applications, which includes the state-of-the-art "X" and "H" series, and the "L" series specifically developed for DCM PFC applications.

The 8-A 8STH06FP and 8S2TH06FP, and 15-A 15STH06FP and 15S2TH06FP Hyperfast tandem rectifiers deliver a reverse recovery time of 19ns and 20ns, respectively. This switching performance is combined with a low forward voltage drop rating of 1.7V at 8A and 1.9V at 15A, allowing the devices to work at higher frequencies. The rectifiers feature soft recovery characteristics even at extreme high di/dt with minimum ringing. The devices offer an operating junction temperature of 175°C for more robust and more cost-effective design, and extremely low leakage current. Available in 2- and 3-pin TO-220 FULLPAK packages, the rectifiers are lead (Pb)-free and RoHS-compliant.