issue: September 2009 APPLIANCE Magazine APPLIANCE Engineer - Ignition Systems ENGINEERING INNOVATIONS: Alternative To High–Power Thick Film Resistive Technology	Share  Printable format  Email this Article  Search

A high-performance thin film resistor series provides high power ratings and is engineered to be impervious to sulfur contamination. RNCP Series resistors, from Stackpole Electronics Inc. (Raleigh, NC, U.S.; www.seielect.com), provide the advantages of thin film technology, including high power handling, high stability, and low noise. Thin film technology and anti-sulfur properties bridge the gap between high-performance resistors and lower cost devices. The resistors have no lead-containing glass and are RoHS-complaint without exemptions. The series is suitable for applications requiring high power and long-term reliability in a low profile. Applications include regulated and unregulated ac-to-dc adapters (2.5W to 15W). SEI Director of Marketing Kory Schroeder says the chip offers twice the normal power rating compared to standard thick film and is a lower cost alternative to conventional thin film chip resistors.

“The elimination of silver and gold make the devices impervious to sulfur contamination and reduces the cost of the resistor such that it is within 10% of the cost of standard general purpose thick film chips,” Schroeder explains.