Schottky rectifiers

Monday, 07 July, 2003 | Supplied by: http://www.soanar.com/


Vishay has released the first products in a new rectifier series using a technology that combines low forward voltage, low leakage current and a high maximum operating junction temperature.

Devices in the H-type high-barrier-height family of rectifiers are built on a proprietary Schottky barrier technology that allows for a typical forward voltage drop of 0.49, typical leakage current of 2.0 mA at 125°C, and high maximum operating junction temperature of 175°C.

Additional reliability is provided with good reverse surge capability of 25 kV ESD and minimum inductive reverse avalanche energy up to 80 mJ.

Leakage current is reduced up to 90% and forward voltage drop by up to 18%.

The devices will be used to provide low-loss operation in high-frequency DC-DC conversion, high-frequency inversion, SMPS, and polarity protection applications. Typical end products will include power supplies, battery chargers, desktop computers, servers, set-top boxes, LCD monitors, plasma displays, projectors, printers, lamp ballasts, and telecom power systems.

The rectifiers are available in eight forward current options ranging from 7.5 to 40 A with 35 to 45 and 50 to 60 V reverse voltage options.

Single- and dual-rectifier configurations are included within the H-type device family, which is available to designers in six package outlines: TO-220AC, TO-220AB, ITO-220AC, ITO-220AB, ITO-263AB, and TO-247AD.

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