Toshiba America Electronic Components, Inc. (TAEC)* today announced a family of 600V DTMOS II superjunction MOSFETs that contribute to higher efficiency of switched-mode power supplies, such as AC adapters in notebook and desktop computers, servers, flat panel displays, and ballasts used in lighting, due to lower on-state resistance (R(DS)(ON)) and faster switching characteristics. Developed by Toshiba Corp., the DTMOS II MOSFETs employ a superjunction structure that enables a reduction in both on-state resistance (R(DS)(ON)) and gate charge (Q(g)), which usually are tradeoffs. Typically, when either of these characteristics is reduced, the other increases, but with its superjunction DTMOS II design, Toshiba has been able to reduce both simultaneously, enabling higher power efficiency and switching performance than conventional MOSFETs.

In these devices, Toshiba refined the superjunction structure with the company's second generation DTMOS technology. By applying this design and optimizing the entire device, Toshiba has achieved figure of merit values for (R(DS)(ON) x (Q(g))) (see note 1) that are approximately 68 percent less than that of conventional Toshiba MOSFETs. This figure of merit is one important performance index for MOSFETs in which smaller is better, and is indicative of higher switching performance and power efficiency.

The first twelve products in the DTMOS II family include 12A, 15A, and 20A 600V MOSFETs, each offered in a choice of four packages, including TO-3P(N), TO-220SIS, TO-220(W) and TFP, a compact surface mount package. The 12A devices feature low on-resistance of 0.4 ohm (max.), the 15A devices feature on-resistance of 0.3 ohm (max.) and 20A devices have on-resistance rated at 0.19 ohm (max.).

"With a combination of low on-resistance, fast switching and ruggedness, our new DTMOS II devices are ideally suited for the switched-mode power supply and ballast lighting markets and are expected to enable a significant increase in power efficiency," said Jeff Lo, business development manager, Discrete Power Devices, for TAEC.

Pricing and Availability

Samples of the twelve Toshiba second-generation DTMOS II devices are available now, with prices beginning at $1.30. The 12A TK12A60U, 15A TK15A60U, and 20A TK20A60U are in mass production now, and the remaining devices are scheduled to be in mass production by October 2008.

Toshiba's Discrete Products

Since 1986, Toshiba Corp. has ranked as the top discrete supplier on a worldwide basis, based on annual revenue from international shipments of total discrete products. According to the most recent annual report from market research firm Gartner Dataquest (San Jose, CA), Toshiba remained the top discrete semiconductor supplier. (Source: "2007 Worldwide Semiconductor Market Share Report," Gartner, released April 2008). More specifically, Toshiba is a leading supplier in a number of discrete product categories, including power transistors, rectifiers and thyristors, LMOS logic, CMOS logic, photocouplers, TOSLINKs, LEDs, small signal diodes and transistors. The company's discrete devices are designed to meet the growing demand for high-performance and lower voltages in today's wireless telecommunications and consumer electronics applications, while emphasizing its strength in the automotive and industrial markets.

*About TAEC and Toshiba Corp.

Through proven commitment, lasting relationships and advanced, reliable electronic components, Toshiba enables its customers to create market-leading designs. Toshiba is the heartbeat within product breakthroughs from OEMs, ODMs, CMs, distributions and fabless chip companies worldwide. A committed electronic components leader, Toshiba designs and manufactures high-quality flash memory-based storage solutions, discrete devices, displays, advanced materials, medical tubes, custom SoCs/ASICs, digital multimedia and imaging products, microcontrollers and wireless components that make possible today's leading cell phones, MP3 players, cameras, medical devices, automotive electronics and more.

Toshiba America Electronic Components, Inc. is an independent operating company owned by Toshiba America, Inc., a subsidiary of Toshiba Corporation, Japan's largest semiconductor manufacturer and the world's third largest semiconductor manufacturer (Gartner, 2007 WW Semiconductor Revenue, April 2008).

Information in this press release, including product pricing and specifications, content of services and contact information, is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable Toshiba product specifications. In developing designs, please ensure that Toshiba products are used within specified operating ranges as set forth in the most recent Toshiba product specifications and the information set forth in Toshiba's "Handling Guide for Semiconductor Devices," or "Toshiba Semiconductor Reliability Handbook."