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Power Semiconductors Outperform Conventional Switching Diodes

16 March 2016

Littelfuse, Inc., has added two series to its expanding power semiconductor portfolio. The MBR Series Schottky Barrier Rectifiers (Standard Schottky) are the latest devices based on silicon Schottky diode technology, and the DUR Series Ultrafast Rectifiers provide ultrafast switching speed.

Littelfuse unveils MBR Series Schottky Barrier Rectifiers. (Source: Littelfuse)  Littelfuse unveils MBR Series Schottky Barrier Rectifiers. (Source: Littelfuse)

The Schottky Barrier Rectifiers are popular with designers because of their extremely fast switching speed, very low forward voltage drop, low leakage and high junction temperature capability. Similarly, the DUR Series Ultrafast Rectifiers are popular because of their ultrafast switching speed with very low reverse recovery time (TRR), high blocking voltage (up to 1200V), low leakage, and low forward voltage drop, which makes it possible to minimize power loss and increase efficiency during converter operation. Their higher junction temperature capability and low leakage provide higher reliability in harsh, high temperature environments.

Typical applications for MBR Series Schottky Barrier Rectifiers include uninterruptible power supplies, high frequency switch-mode power supplies and DC-DC converters, as well as use as free-wheeling diodes and polarity protection diodes. The DUR Series Ultrafast Rectifier addresses those applications, and can also be used as anti-parallel diodes for high frequency switching devices such as IGBTs.

MBR Series Schottky Barrier Rectifiers are available in various package types, depending on their ratings, including D2PAK/TO-263, DPAK/TO-252, ITO-220AB, TO-220AB, TO-220AC and TO-247AD. DUR Series Ultrafast Rectifiers come in D2PAK/TO-263, DPAK/TO-252, ITO-220AB, TO-220AB, ITO-220AC, TO-220AC, TO-247AC and TO-247AD. Both series are sold in either reels or tubes, depending on the package type selected.



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