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High-Current-Density Schottky Rectifiers

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article image Vishay’s high-current-density Schottky rectifiers

VISHAY Intertechnology, represented in Australia by Braemac, has released a new series of high-current-density Schottky rectifiers that provide high efficiency and space savings with high forward current ratings in three compact package sizes.

The new devices are capable of handling higher levels of current in less space than industry-standard devices. The new SMA-packaged rectifier can handle 2A or 3A, compared to the industry-standard of 1A. The SMB and SMC-packaged rectifiers can handle 4A and 5A, respectively, compared to industry-standard values of 2A and 3A. The SMB-packaged devices are industry's first 4A rated Schottky rectifiers in this package type.

Vishay's new SSA23L through SSC54 Schottky rectifiers in the SMA, SMB, and SMC packages are intended for power supplies, high-frequency dc to dc converters, high-frequency inverters, free-wheeling diodes, and polarity protection in end products including power supply systems, notebook PCs, motherboards, LCD monitors, DVD players, printers, and battery chargers for mobile and cordless phones and digital cameras.

In addition to excellent reliability with high forward surge capability, the new rectifier series offers significantly reduced forward voltage drop for less power dissipation, less heating and more efficient operation. A guard-ring provides over-voltage protection.

The devices' high current density, compact package sizes, and high efficiency allow for improved packing density on printed circuit boards, which in turn enables design of smaller end products.

The three package outline options available are the DO-214AC (SMA), DO-214AA (SMB), and DO-214AB (SMC), each of which features a plastic package with Underwriters Laboratory Flammability Classification 94V-0 and built-in strain relief. The devices are rated for a maximum operating junction temperature of 150°C, as well as for 25-KV ESD capability.

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