Resistors feature a TCR of less than 75ppm/K

3rd March 2015

Siobhan O'Gorman

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Resistors for medium and lower performance requirements in the SMD-mountable precision and power resistor segment are now available from Isabellenhütte. The CMx series of resistors consists of three versions: the CMS, the CMP and the CMK. The devices, which meet the market demand for reduced technical performance, are available in the standard sizes 2512, 2010 and 1206.

Operating across a temperature range of -65 to +170°C, the resistors are suitable for both industrial applications and automotive applications. In the automotive sector, the devices comply with the AEC-Q200 specifications and fulfil the criteria of RoHS 2011/65/EU.

Despite their reduced resistance, the CMx resistors offer the same features as other Isabellenhütte resistors, such as high long-term stability, optimum temperature coefficients and high load capacity. The TCR of the entire range is below 75ppm/K.

Long-term stability after 2,000 hours of operation is outstanding, with deviation of less than 1.0% from the original values for all sizes. All three versions have a very high load capacity. The CMS and CMP devices have a resistance of 10 to 500mΩ at load capacities of 2W and 1W, respectively. The CMK offers a resistance of 10 to 100mΩ at a load capacity of 0.5W.

“Unlike many other resistors in the lower performance range, our low temperature coefficient applies to the whole resistance range and load capacity is guaranteed, even when the temperature of the contact points is high,” commented Eugen Löwen, Application Management Sales Components, Isabellenhütte.