SMD Chip Resistor Series resists sulfur contamination.
Press Release Summary:
Available in sizes from 0201-2512, RoHS-compliant RMCS series features inner termination material that reduces amount of silver present in order to minimize susceptibility to sulfur. Design promotes passivation of resistance element and its overlap onto termination itself. Suited for environments where sulfur is always present, series offers resistance values from 10 W to 22 MW, tolerances as low as 1%, and TCs as low as 100 ppm. One 0 W jumper is provided for each size.
Original Press Release:
Stackpole Electronics, Inc. Introduces a New SMD Resistor Series that Resists Sulfur Contamination
Advanced materials and processes yield a chip that greatly reduces susceptibility to sulfur...
RALEIGH, N.C. (October 27, 2006) - Stackpole Electronics, Inc. introduces a new SMD chip resistor series that is more reliable in high sulfur conditions than traditional resistors. Designated the RMCS series, the resistors are available in sizes from 0201 to 2512, in resistance values from 10 ohms to 22 Mohms, in tolerances as low as 1% and TCs as low as 100ppm. This series is 100% RoHS compliant and offers a 0 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 that, in the presence of a high sulfur environment, can react to form silver sulfide. Silver sulfide is non-conductive, making 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 this type of high sulfur environment. High sulfur environments can vary greatly, and are prevalent in automotive and industrial applications, among others. 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, 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 for the presence of sulfur. 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 and industrial applications such as power plants or other industrial controls that may reside in environments where sulfur is always present, such as fuels, oil and 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 and many of the electronics used daily are susceptible to sulfur contamination.
The RMCS 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. at 3261 Atlantic Avenue, Raleigh, N.C. 27604; phone 919-850-9500; fax 919-850-9504; email marketing@seielect.com; or visit 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.
