Tyco Electronics PolyZen Devices Now Stocked by Digi-Key

PolyZen devices are polymer-enhanced precision Zener diode micro-assemblies that help protect sensitive electronics from damage caused by inductive voltage spikes, voltage transients, incorrect power supplies and reverse bias. The PolyZen micro-assembly incorporates a stable Zener diode for precise voltage clamping and a resistively non-linear, polymeric positive temperature coefficient (PPTC) layer that responds to either diode heating or overcurrent events transitioning from a low to high resistance state. These devices help provide resettable protection against damage from multi-watt fault events and require only 0.7W power dissipation. In the event of sustained high-power conditions, the PPTC element of the device "trips" to limit current and generate voltage drop. This functionality helps protect the Zener and the follow-on electronics, effectively increasing the diode's power handling capacity. Applications include portable media players, global positioning systems, hard disk drive 5V and 12V bus protection, automotive peripheral input power protection, DC power port protection, and industrial handheld POS.

The PolyZen devices are featured in Digi-Key's print and online catalogs and are available for purchase directly from Digi-Key.

"With single component placement and minimal heat sink requirements, the PolyZen devices will help our customers reduce their design costs," said Mark Larson, Digi-Key president and COO. "Providing engineers with products that save them time and ultimately money is important, and to that end, I am very pleased to see the addition of the PolyZen devices to our product line."

To date, billions of Tyco Electronics Raychem Circuit Protection products have been used to protect a wide range of electronic products in the computer, battery and portable electronics, consumer, automotive, industrial appliance & HVAC, and telecommunications markets.

Digi-Key Corporation focuses on providing customers with superior service, which includes product selection and availability, on-time delivery, and responsiveness. Using streamlined processes and state-of-the-art technologies, Digi-Key serves a global customer base from its single 600,000 square foot facility in Thief River Falls, Minnesota, USA.

About Digi-Key Corporation

One of the world's fastest growing distributors of electronic components, Digi-Key has earned its reputation as an industry leader through its total commitment to service and performance. As a full-service provider of both prototype/design and production quantities of electronic components, Digi-Key has been ranked #1 for Overall Performance for 17 consecutive years from among the nation's more than 200 distributors (EE Times Distribution Study/ August 2008). Offering more than a million products from nearly 400 quality, name-brand manufacturers, Digi-Key's commitment to inventory is unparalleled. Access to the company's broad product offering is available 24/7 at Digi-Key's top-rated Web site, www.digikey.com.

SOURCE: Digi-Key Corporation

Editorial Contact for Digi-Key Corporation Steven G. Tsukichi, 218-681-8000, Ext 1001 Vice President, Strategic Operations Chief Marketing Officer steve.tsukichi@digikey.com