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Shunt Resistor MMS8420 for High Current Stable and Accurate Measurement in Industrial and Automotive Applications

Writer:Microhm Page View:Date:2019-07-31
Microhm Electronics announced to extend the resistance of E-Beam Welded Shunt­ resistors MMS8420 from 1 mohm to 2mohm to fit more applications. MMS8420 is designed for high current stable and accurate measurement in industrial and automotive applications.

The shunt is an electron beam welded resistance element, sandwiched between large copper terminals with optional tin plating. Precision applications can make use of its 1% tolerance, 100ppm/°C TCR, 1µV/°C thermal EMF and separate ground pins to reduce errors. The low measurement error of this resistor frees up the designer’s error budget and its low ohmic values reduces power loss. The MMS8420 provides the fullest selection of values  ranging from 50 to 2000µΩ.
MMS8420 features low self-heating which reduces equipment temperature and improves reliability for designers needing to manage temperature rise in compact power electronic assemblies. The robust electron beam welded technology and low thermal EMF of this resistor make it advantageous for HEV battery management, energy metering and welding power supplies.

Microhm's MMS8420 can replace similar products from key competitors. This includes the slightly different 8518 format, both formats have the same 60mm mounting hole pitch.


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