SMD Chip Resistors are used in high sulphur atmospheres.

Press Release Summary:



Using gold as inner termination material to eliminate effects of sulphur, RMCG series chip resistors have resistance values from 10 W to 10 MW, tolerances of 1%, and TCs of 200 ppm. RoHS compliant units are available in sizes from 0603-1210 and offer zero ohm jumper for each size. Offered on tape or reel, resistors are used in applications including medical electronics, aviation and aerospace, utility meters, and instrumentation.



Original Press Release:



Stackpole Electronics, Inc. Introduces New SMD Resistor Series that Resists Sulfur Contamination



RALEIGH, N.C. (November 1, 2006) - Stackpole Electronics, Inc. has introduced a new SMD chip resistor series that is the ultimate in reliability in high sulfur conditions. Designated the RMCG series, it is available in sizes from 0603 to 1210, in resistance values from 10 W to 10 MW, in tolerances as low as 1%, and with TCs as low as 200ppm. This series is 100% RoHS compliant and offers a zero ohm jumper for each size as well.

The RMCG series uses gold as the inner termination material, effectively eliminating silver, the material with which sulfur reacts. With no silver present, the part becomes completely protected from any effects caused by high sulfur atmospheres. Most standard chip resistors have a relatively high amount of silver in their inner terminations, which, in the presence of a high sulfur environment, can react to form silver sulfide, a non-conductive material that makes the resistor an open circuit failure. This failure can happen in a very short period of time, and greatly reduces the usable lifetime and reliability of any product subjected to a high sulfur environment. High sulfur environments can vary greatly, and are prevalent in automotive and industrial applications, among others.

The automotive industry has the most widely used test for sulfur contamination, which requires the part be put under power in an extremely high sulfur environment for an extended period of time. After the part is removed from this chamber, it is tested with a scanning electron microscope (SEM) for the presence of sulfur. The new RMCG series shows no additional sulfur presence under SEM inspection.

This product is best for applications requiring protection from sulfur contamination for extensive periods of time, or those applications in which any sulfur contamination is unacceptable. Such applications would include, but are not limited to, medical electronics, aviation and aerospace, utility meters of all types, instrumentation, and many types of industrial controls.

The RMCG series is available on tape and reel in the standard quantity increments, with samples available in three to four weeks. Standard pricing varies with size, resistance value and tolerance; contact a Stackpole representative for details.

For more information about Stackpole products, contact
Stackpole Electronics Inc.
3261 Atlantic Avenue,
Raleigh, N.C. 27604
phone 919-850-9500
fax 919-850-9504
email marketing@seielect.com
Visit the Web site at www.seielect.com.

Stackpole Electronics Inc. is a leading global manufacturer of resistors supplying to the worlds largest OEMs, contract manufacturers and distributors. Headquartered in Raleigh, N.C., the privately held company began manufacturing in 1928 as part of Stackpole Carbon Company in St. Mary's, Pennsylvania. Now affiliated with Akahane Electronics, Stackpole has manufacturing facilities in Japan, Taiwan, China and Mexico; warehousing facilities in El Paso, Hong Kong and Japan; and sales offices in Tokyo, Hong Kong and Taiwan.

All Topics