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Press release
Isabellenhütte 1 / 2015
Dillenburg, Germany, 3 March 2015
Isabellenhütte expands its portfolio for medium and lower performance requirements
New CMx SMD resistor series from Isabellenhütte:
High stability, even at low levels of performance
Isabellenhütte now also offers resistors for medium and lower performance
requirements in the SMD-mountable precision and power resistor segment, closing a
gap in its range. The existing SMx and VMx SMD series include resistors for high-end
applications. The new CMx series meets the market demand for reduced technical
performance and is available in the standard sizes 2512, 2010 and 1206. The new
resistors work in the temperature range from -65 to 170 °Celsius, making them
suitable for both industrial applications and as components in vehicle applications. In
the automotive sector, they comply with the AEC-Q200 specifications and fulfil the
criteria of RoHS 2011/65/EU.
Low TCR across the entire range of temperatures
Despite their reduced resistance, the CMx resistors offer the same quality 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 75 ppm/K.
“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,” confirms Eugen Löwen,
Application Management Sales Components at Isabellenhütte. The TCR of resistors
made by other manufacturers varies across the value range and nominal load
depends on the ambient temperature. However, contact point temperature is the key
point of reference for applications. Together with the load and stability of the
component, it is decisive. Users also benefit from the long-term stability of
Isabellenhütte’s technology. Long-term stability after 2,000 hours of operation is
excellent, with deviation of less than 1.0 per cent from the original values for all sizes.
“While other manufacturers can match that performance, few can achieve the contact
point temperatures offered by Isabellenhütte resistors, for example 100 °Celsius,” says
Eugen Löwen. All three versions have a very high load capacity. The CMS has
resistance of 10 to 500 mOhm at a nominal capacity of 2 watts. The CMP also has
resistance of 10 to 500 mOhm with load capacity of 1 watt. The CMK offers resistance
of 10 to 100 mOhm and a load capacity of 0.5 watts.
Technical details CMx:
Resistance values
10 to 500 mOhm (CMS, CMP)
10 to 100 mOhm (CMK)
Tolerance
1/5%
Temperature coefficient (20-60 °C)
< 75 ppm/K
Temperature range
-65 to +170 °C
Power rating
2 W (CMS), 1 W (CMP), 0.5 W (CMK)
Internal heat resistance
< 35 K/W (CMS)
< 50 K/W (CMP)
< 80 K/W (CMK)
Inductance
< 3 nH
Dielectric withstanding voltage
200 V AC/DC
Stability (nominal load)
deviation after 2,000 hrs,
TK = Terminal temperature
< 1.0 % at TK = 100 °C (CMS)
< 1.0 % at TK = 120 °C (CMP)
< 1.0 % at TK = 130 °C (CMK)
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The new CMx SMD resistor range from Isabellenhütte, for medium and low
performance requirements, meets Isabellenhütte’s established quality standards.
About Isabellenhütte Heusler
Isabellenhütte Heusler GmbH & Co. KG has been owned by the Heusler family since
1827. Today it is one of the world’s leading manufacturers of low-impedance precision
and power resistors. The company also produces precision alloys and measurement
technology products. Isabellenhütte’s measurement technologies are leaders in the
field of shunt-based power measurement. Its precision measurement systems are
marketed under the ISAscale® brand. The company employs some 720 people at its
headquarters and production location in Dillenburg (Hesse, Germany).
www.isabellenhuette.de
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Thank you!
Company contact:
Anton Roth
Sales Director Components
Isabellenhütte Heusler GmbH & Co. KG
Eibacher Weg 3 - 5
35683 Dillenburg, Germany
Tel.: +49 2771 / 934-151
Fax: +49 2771 / 934-99154
[email protected]
Media:
Michaela Wassenberg
Wassenberg Public Relations für
Industrie und Technologie GmbH
Rollnerstr. 43
90408 Nuremberg, Germany
Tel.: +49 911 / 598 398-0
Fax: +49 911 / 598 398-18
[email protected]