Vishay AS1Px standard/AR1Px fast/AU1Px ultrafast rectifier range

Vishay has introduced nine series of low-profile, surface-mount standard, fast and ultrafast avalanche rectifiers with 20 MJ EAS avalanche capability and forward currents up to 4 A in SMPC packages.

The AS1Px standard, AR1Px fast, and AU1Px ultrafast rectifiers offer a low profile of 1.0 mm. Featuring a profile of 1.1, devices in SMPC packages include the AS3Px and AS4Px standard, AR3Px and AR4Px fast and AU2Px and AU3Px ultrafast rectifiers.

The devices save space in secondary rectifiers and freewheeling diodes for very fast switching of AC/DC and DC/DC converters in high temperatures for consumer, lighting and motor vehicle applications.

Providing high current density, the AEC-Q101-qualified devices combine their compact packages with high average forward currents. In the SMPC package, the AS4Px and AR4Px are claimed to be the industry’s first standard and fast devices to offer a 4 A forward current, while the AU3Px is said to be the first ultrafast 3 A device.

The AS3Px and AR3Px also have forward currents up to 3 A, while the AU2Px offers currents up to 2 A. Currents in the SMP package range from 1.0 A for the AR1Px and AU1Px to 1.5 A for the AS1Px.

All nine series offer designers a choice of 200, 400, 600, 800, or 1000 V reverse voltage. The rectifiers feature low forward voltage drop, reverse recovery times of 75 ns, leakage current down to 0.3 µA and low junction-to-mount thermal resistance.