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ThermalTrak™ transistors deliver industry’s only single-device audio amplification solutions to eliminate thermal lag and greatly improve audio fidelity

Phoenix, Arizona – Jan. 20, 2006 – A leading global supplier of high performance audio transistors, ON Semiconductor (Nasdaq: ONNN) today introduced a new family of ThermalTrak™ output transistors with the unique feature of internal bias control. Designed for use in both high-end and cost-competitive consumer audio applications, and high-power professional sound systems, the ThermalTrak™ devices improve overall sound quality and simplify design.

The patented ThermalTrak™ technology utilized in ON Semiconductor’s audio output transistors works to eliminate aggravating warm-up time and enables quick and precise bias adjustment. Real-time temperature sensing allows designers to monitor operating temperatures more accurately, and works to improve both sound quality and bias stability. By eliminating the need for output drive compensation circuitry and costly manual bias adjustments, the devices greatly simplify amplifier design.

“ThermalTrak™ has changed how designers implement power audio amplification,” said Mike Paquette, director of ON Semiconductor’s Power Discrete product group. “Typical bias schemes often require a designer to slightly under-bias amplifier output devices so that thermal runaway does not occur. This prevents the amplifier from achieving true high fidelity performance. Put simply, ON Semiconductor’s ThermalTrak™ output transistors are single-device solutions that enable true high fidelity performance.”

The Devices
The medium frequency NJL21193DG (PNP) and the NJL21194DG (NPN) are 250 V devices that offer a 200 watt (W) power rating and a 4 MHz bandwidth. With a high power rating and superior safe operating area (SOA) these devices are ideal for high-power professional audio applications that require high reliability. Such applications include professional sound reinforcement and large venue PA sound systems.

The previously released high frequency (30 MHz) family of devices includes the 180 watt (W) NJL0302DG (PNP) and NJL0281DG (NPN), the 200 watt (W) NJL1302DG (PNP) and NJL3281DG (NPN), and the 250 watt (W) NJL4302DG (PNP) and NJL4281DG (NPN). The high power and excellent gain matching of these devices makes them ideal for consumer audio amplifiers and professional audio applications that use either single or multiple paralleled output devices. Such applications include car audio, home stereo and home theater systems.

Packaging, Price and Availability
The ThermalTrak™ devices are offered in a standard size 5-lead, TO-264 package.

The new medium frequency NJL21193DG and NJL21194DG devices are budgetary priced at $1.60 per unit in 10,000 unit quantities. The NJL0302DG and NJL0281DG (30 MHz, 180 W devices) are budgetary priced at $1.30 per unit in 10,000 unit quantities. The NJL4302DG and NJL4281DG (30 MHz, 250 W devices) and the NJL1302DG and NJL3281DG (30 W, 200 W devices) are budgetary prices at $1.75 per unit in 10,000 unit quantities.

Samples are available now. To request samples, please visit ON Semiconductor’s website at https://www.onsemi.com. For additional information, contact Todd Visconti at todd.visconti@onsemi.com.

About ON Semiconductor
With its global logistics network and strong portfolio of power semiconductor devices, ON Semiconductor (Nasdaq: ONNN) is a preferred supplier of power solutions to engineers, purchasing professionals, distributors and contract manufacturers in the computer, cell phone, portable devices, automotive and industrial markets. For more information, please visit ON Semiconductor’s website at https://www.onsemi.com.

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ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its website in this news release, such information on the website is not to be incorporated herein.

About onsemi

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

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onsemi and the onsemi logo are trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the Company references its website in this news release, information on the website is not to be incorporated herein.

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