Microhm Electronics developed its models MMS2512, MMS3920, MMS4026 and MMS5930  high power current sense resistors to satisfy the accurate measurement requirements of a wide range of applications. These resistors are manufactured using an electron beam-welded metal strip with iron chrome or manganese copper alloy resistive element giving them excellent electrical characteristics. They also feature copper alloy terminations that deliver additional mechanical strength and enable ease of solderability.

 
Because of their very low resistance, low thermal electromagnetic field (EMF), low TCR, very high power and excellent long term stability, Microhm MMS series products are optimal high accuracy current measurement solutions. For applications that require even higher measurement accuracy, in addition to Microhm 2-terminal MMS2512, MMS3920 and MMS5930, the company also offers a 4-terminal version, such as MMS4026. The series’ low thermal EMF delivers low voltage drop and higher measuring accuracy along with outstanding long term stability at ΔR/R max 1% for 21,000 hours rated power at 130 °C.
 
Providing superior quality, MMS series are automotive-grade AEC-Q200 compliant. The MMS2512, MMS3920, MMS4026 and MMS5930 features rated power from 2 to 12 watts to handle high current requirements with very low resistance (0.2 to 5 milliohms). The MMS6918, MMS8518 and  MMS8420 comes with a permanent power ratings to 36W and resistance values from 50 to 200 microohms. The MMS series offer a very low drift of resistance with temperature due to their low TCR of 50 PPM/°C in the 20 °C to 60 °C temperature range. In addition to RoHS compliancy, the new MMS series feature extended temperature operation (-55 to +170 °C) for reliability in harsh environments. Upon request, Microhm Electronics can offer customized parts to meet a customer’s required shape and mechanical and electrical characteristics.