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STMICROELECTRONICS DEBUTS HIGH-VOLTAGE LOW-CURRENT DIODES.

STMicroelectronics (NYSE:STM) has debuted a range of ultra-fast high-voltage, medium-current diodes.

The STTH diodes are designed for use in industrial, automotive, motor control, lighting and power conversion applications, which need high-voltage ultra-fast diodes that will handle voltages between 800 and 1200V, but relatively small currents from 1 to 3A. Such applications also need diodes with medium recovery times (of not more than 75ns) and the best possible ratio of forward voltage drop (VF) to leakage current (IR).

The STTH parts are built with a planar, platinum-doped silicon, which helps optimize the combination of VF, IR and trr recovery time. There is a trade-off in both former gold- and new platinum-doped diodes between forward voltage drop VF and reverse recovery time trr. The advantage of the platinum doping process is to reduce leakage current by approximately 100 times, compared to gold doping, providing scope to improve VF at a given trr.

The platinum process enables STMicroelectronics to offer a maximum operating temperature of 175 degrees Celcius for its diodes. The reduced leakage current of the process also creates a useful temperature margin with regard to the thermal runaway phenomenon. On top of this, the optimization of the forward voltage drop in the new series cuts the power losses of the clamping functions in standby mode.

These parts are especially suitable for free-wheeling, clamping, snubbing and demagnetization functions in power supplies and other power-switching applications.

Prices range from US$0.17 to US$0.24 in quantities of 5K pieces.

About STMicroelectronics

STMicroelectronics is a developer and provider of semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2003, the company's net revenues were $7.24 billion and net earnings were $253 million.

STMicroelectronics can be found on the World Wide Web at http://www.st.com/.

For more information, call 212/821-8939.
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Publication:Electro Manufacturing
Date:Jan 1, 2005
Words:361
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