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Editor Contact Information Kory Schroeder Product Engineering Manager Stackpole Electronics Inc. 919-875-2495 kschroeder@seielect.com |
RALEIGH, NC (Sept. 21, 2006) – Stackpole Electronics, Inc. introduces a new SMD chip resistor series that is more reliable in high sulfur conditions. Designated the RMCS series, it is available in sizes from 0201 up to 2512, in resistance values from 10 ohms up to 22 Meg ohms, in tolerances as low as 1% and TC’s as low as 100 ppm. This series is 100% RoHS compliant and offers a zero ohm jumper for each size as well.
The RMCS series has a proprietary inner termination material that greatly reduces the amount of silver present. 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. Silver sulfide is non-conductive meaning the resistor becomes 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 this type of high sulfur environment. High sulfur environments can vary greatly with automotive and industrial environments being two important examples. In addition to the inner termination material improvement, the passivation of the resistance element and its overlap onto the termination itself is also improved.
The automotive industry has the most widely used test for sulfur contamination. This test requires the part to 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 on the part. The new RMCS series shows results well below the maximum allowable levels for sulfur.
This product is well suited for a variety of automotive applications, but also industrial applications such as power plants or other industrial controls which may reside in environments where sulfur is always present such as fuels, oil, coal, as well as belts and hoses. There are also some parts of Asia where the normal daily atmosphere has a high amount of sulfur. In this case, many of the electronics used daily may be susceptible to sulfur contamination.
The RMCS series is available on tape and reel in the standard quantity increments, with samples available in 3 – 4 weeks. Standard pricing varies with size, resistance value, and tolerance, contact factory for details.
For more information about Stackpole products, contact Stackpole Electronics Inc. at 3261 Atlantic Avenue, Raleigh, N.C. 27604; phone 919-850-9500; fax 919-850-9504; email marketing@seielect.com; or visit the Web site at www.seielect.com.
Stackpole Electronics Inc. is a leading global manufacturer of resistors supplying to the world’s 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, Guadalajara, Hong Kong and Japan; and sales offices in Tokyo, Hong Kong and Taiwan.