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Transistors reduce PCB size

Posted: 12 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:bipolar transistor? zetex semiconductors? zxtn? zxtp? transistor?

Achieving the same current handling capability as larger SOT223 equivalents, the new series of SOT23-packaged bipolar transistors from Zetex Semiconductors promises to significantly reduce PCB size. According to the company, the move from SOT223's 6.7-by-7.3mm footprint to the 2.5-by-3.05mm footprint of SOT23 provides a space saving of more than 80 percent.

Capable of switching loads of up to 400W, the initial offering of six miniature devices comprises three NPN and three PNP transistors, rated at 50-, 60- and 100V. The miniature ZXTN and ZXTP high power density transistors dissipate up to 1.2W of power, and support a continuous collector current up to 5A, combined with peak collector current up to 12A. Zetex added that the very low saturation voltage ensures that power losses and circuit efficiency are optimized by the transistors. These products are ideal drivers of power MOSFETs, IGBTs, DC motors, relays, solenoids and high power LEDs, said the company.

The price of the ZXTN and ZXTP transistors through distributors is 21 cents in 10,000-piece quantities.

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