The BVN precision resistor uses 25 per cent less space and is ideal for installation on DCB ceramics

Isabellenhütte has added the new BVN four-terminal resistor to its measuring resistor range. It is exceptional due to its small size of between 3.3 and 4 millimetres plus its extremely low temperature coefficient of less than 50 ppm/K. “It is difficult to produce low-ohmic resistors with values of less than 1 mOhm that also have good temperature coefficients. The BVN has achieved it – together with a size that is 25 per cent smaller than other resistors with similar performance,” confirmed Thomas Otto from the Application Management division at Isabellenhütte. The BVN can handle continuous loads of up to 100 A with a resistance value of 0.5 mOhm. Overall, it has excellent stability over long periods and is suitable for a broad temperature range between -55 and 170 °C as well as for soldering temperatures of up to 350 °C. The BVN can also be mounted on a variety of circuit boards and substrates: It can be mounted on the traditional FR4 material used in most standard applications and on DCB ceramics for high-current applications.

Small, precise, temperature independent

The BVN is suitable for numerous automobile and industrial applications: for frequency converters in drive technology and power modules in inverters, as measuring resistor in power hybrids, and for high-current applications in automobile technology. The components are ideally suited to use on ceramic substrates thanks to their excellent thermal-cycling resistance and the minimal footprint in high-current applications (control electronics, e.g. power steering). Thomas Otto explains: “Each square millimetre saved in construction equals cost savings for the manufacturer.” The BVN combines small mechanical dimensions with high measuring accuracy and low temperature dependence.

Technical specifications of the BVN:
Resistance values 0.5 mOhm | 1 mOhm
Tolerance 1/5 %
Temperature coefficient (20 – 60 °C) < 50 ppm/K
Temperature range -55 to 170 °C
Load capacity 5 W | 3 W
Inner thermal resistance < 8 K/W | < 13 K/W
Inductance < 3
Stability (nominal load) < 0.5 % (TK = 100 °C)
Deviation after 2,000 hrs. < 1.0 % (TK = 130 °C)
TK = contact point temperature

Isabellenhütte Heusler GmbH & Co. KG has been owned by the Heusler family since 1827. Today, the company is an international leader in the production of low-resistance precision and power resistors. Other business units are dedicated to the production of thermoelectric and resistance alloys, while the measurement technology designed by Isabellenhütte is considered to lead the field in shunt-based current measuring systems. The company combines its precision measuring systems under the new brand name ISAscale®. Around 720 staff are employed at its headquarters and production works in Dillenburg, Hesse.

Company contact:
Isabellenhütte Heusler GmbH & Co. KG
Eibacher Weg 3 - 5
D-35683 Dillenburg
Thomas Otto
Application Management
Tel.: +49 2771 / 934-282
thomas.otto@isabellenhuette.de

Press contact:
Wassenberg Public Relations für
Industrie & Technologie GmbH
Rollnerstr. 43
D-90408 Nürnberg
Michaela Wassenberg
Tel.: +49 911 / 598 398-0
Fax: +49 911 / 598 398-18
m.wassenberg@wassenberg-pr.de

This release was published on openPR.