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Transistors maximize power handling in low voltage apps

Posted: 15 May 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ZXTN23015CFH? ZXTN25020DFH? ZXTP23015CFH? ZXTP25040DFH? bipolar transistor?

<a href=Zetex's low voltage bipolar transistors" ALIGN="RIGHT">

Zetex Semiconductors introduced a new range of low voltage bipolar transistors that are said to extend the power handling capability of the SOT23 package.

Leveraging its lead frame design and bipolar process capability, Zetex is offering two new NPN and two PNP devices, each capable of dissipating up to 1.25W. The ZXTN23015CFH and ZXTN25020DFH NPNs have VCE ratings of 15V and 20V respectively, while the ZXTP23015CFH and ZXTP25040DFH PNPs are in turn rated for 15V and 40V operation.

"Handling continuous currents up to 6A, the transistor series enables increases in power density to be made," said Stephen Lin, vice president of Zetex Asia. "By supporting pulse current peaks up to 15A, it also provides the ability to drive higher capacitance MOSFETs and IGBTs at much higher speed in power supply applications."

The transistors have a saturation voltage of 30mV at 1A collector current for the 15V NPN. Zetex claims that the transistors' high gain enables large loads to be driven by ICs without the need for additional buffer circuitry.

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