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Ultrafast avalanche rectifiers with capability current up to 4A

Posted: 25 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:SMP? SMPC? packages? current? voltage?

Vishay Intertechnology Inc. rolls ultrafast avalanche rectifiers with the capability current up to 4A and comes in SMP and SMPC packages.

The SMP packages include the AS1Px standard, AR1Px fast, and AU1Px ultrafast rectifiers. The SMPC packages, on the other hand, have the AS3Px and AS4Px standard, AR3Px and AR4Px fast, and AU2Px and AU3Px ultrafast rectifiers. These devices could save space in secondary rectifiers and freewheeling diodes for fast switching of AC/DC and DC/DC converters in high-temperature conditions for consumer, lighting and automotive applications.

The AEC-Q101 devices combine their compact packages to provide high current density. In the SMPC package, the AS4Px and AR4Px are devices with 4A forward current, while the AU3Px is a device with 3A ultra-fast. The AS3Px and AR3Px have also forward currents up to 3A, while the AU2Px has currents up to 2A. Currents in the SMP package range from 1A for the AR1Px and AU1Px to 1.5A for the AS1Px.

The ultrafast avalanche rectifiers have 200V, 400V, 600V, 800V, or 1,000V reverse voltage ratings. The rectifiers can give low forward voltage drop, reverse recovery times as low as 75 ns, leakage current down to 0.3 microamps, and very low junction-to-mount thermal resistance of 5C/W for the SMPC rectifiers and 15C/W for the SMP rectifiers.

The rectifiers have a maximum operation junction temperature of + 175C and an MSL moisture sensitivity level of 1, per J-STD-020.

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