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For Immediate release
May 7, 2012

For more information contact:
Richard Huang, Phihong USA
(510) 445-0100
richardh@phihongusa.com

Patricia Staino, BtB Marketing
(919) 872-8172
patricia.staino@btbmarketing.com

Stonehenge Extended Lifespan LED Drivers

New LED drivers’ extended lifespan matches LEDs’ longevity, lowering costs for OEMs and end users…

Phihong's New Stonehenge Series LED Drivers with 100,000 Hour Measured Lifespans

FREMONT, CA May 7, 2012)— Phihong USA, a leading global supplier of energy efficient and highly reliable power solutions for OEM lighting technology, has developed a new series of external AC/DC LED drivers that boast extended lifespans of up to 100,000 hours. The new
Stonehenge series LED drivers are designed without E-caps, which dry out over time and shortenthe operating life of power supplies. A subset of the broader PDA012X Series, the Stonehenge Series consists of two drivers: the PDA012A-350C-H-R, which is designed for AC inputs of 220-277VAC, and the PDA012B-350C-H-R, which is designed for AC inputs of 100-120VAC. Both 350mA constant-current drivers operate at an output voltage range of 10-43VDC, and are ideal for applications including display lighting and small strings of high-intensity bulbs.

“Solid-state lighting provides greater energy savings and longer operating lifespans than
incandescent or fluorescent lighting; however, most manufacturers cannot provide OEMs
with power supplies that can match LEDs’ longevity,” said Keith Hopwood, vice president of
marketing for Phihong USA. “The new Stonehenge series, which boasts measured life spans
of 100,000 hours, resolves this issue by meeting LED operation benchmarks, cutting energy
costs, and lengthening the average amount of time between installation and maintenance or
replacement services.”

The Stonehenge Series is designed to operate in temperatures ranging from -40C to 50C at
full power and -40C to 60C at reduced output power. Featuring an ingress protection rating
of 20, the drivers are rated for dry environments only. Additionally, Stonehenge Series drivers
come with an extended eight-year warranty, and their small, lightweight design enables easy
integration into a variety of indoor and architectural design projects.

Standard features of the Stonehenge Series LED lighting power supplies include over-voltage,
over-current, short-circuit, and open-circuit protections, including brownout and brownout
recovery. The drivers also meet UL8750 and UL1310 requirements, bear safety approval
markings for both UL and CE, and meet the specifications outlined by Energy Star for SSL
luminaires, including a power factor correction of greater than 0.9.

The other constant-current LED power supplies in the PDA012X Series possess the same
standard features as the Stonehenge Series models, but with lifespans of 50,000 hours. Thesemodels are available at a lower cost and come with a standard three-year warranty.

All LED drivers in the PDA012X series, which includes the two Stonehenge Series models,
measure 132mm x 30mm x 22mm and weigh 150 grams. Pricing for the Stonehenge series
models, designated PDA012X-350C-H-R, start at $68.61 in single unit quantities. For more
detailed information, including product datasheets, please visit www.phihong.com/LED.

Phihong will be exhibiting at the Lightfair International trade show and conference May 9-11, 2012 at the Las Vegas Convention Center in Las Vegas, Nevada. Please visit us at booth
#3945 for more information about these products and the rest of our lighting power technology portfolio.

About Phihong

As a world leader in the development of world class power solutions, Phihong is one of the leading suppliers of adapters, power supplies, LED drivers and Power-over-Ethernet products to OEMs serving datacom, telecom, personal electronics, networking, lighting, and industrial markets. Phihong has a truly global reach with design labs, manufacturing facilities and sales support centers in California, New York, The Netherlands, China, Japan and Taiwan. For more information contact Glenn Morton, Phihong USA Corporation, 47800 Fremont Blvd., Fremont, CA 94538, or call (510) 445-0100, fax (510) 445-1678, usasales@phihongusa.comn or visit http://www.phihong.com/LED.


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