Current Sensing Precision Resistor

The SMS current sensing precision resistor series from Isabellenhütte offers the designer higher power ratings and low internal temperature rises due to the larger pad termination sizes. The MANGANIN® alloy resistance element has a resistance range of 0.005Ω to 1Ω TCR of below 50ppm/°C over the temperature range of +20°C and +60°C and offers excellent long term stability. The SMS model offers these capabilities in a 2512 chip size.

• Current sensing precision resistor
• 2-terminal surface-mount design in a 2512 chip size
• Resistance range from 0.005Ω to 1Ω
• Tolerances of ±0.5%, ±1%, ±2% and ±5%
• TCR of <±50 ppm/°C (+20°C to +60°C)
• Power rating of 5W (at +70°C)
• Constant current up to 25A (0.005Ω)
• Temperature range from -65°C to +170°C
• Inductance of <3nH
• Stability of <0.5% (T_K=80°C) / <1% (T_K=110°C) (at rated power, deviation after 2000h)
• Dielectric withstanding voltage of 200V AC/DC
• AEC-Q200 qualified

 

Typical applications for the SMS current sensing precision resistor series include:

• Current sensor for power hybrid applications
• Control systems for the automotive market
• Power modules
• Frequency converters
• Switch mode power supplies

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Isabellenhütte is one of the world’s leading suppliers of high-quality precision and power resistors. They produce these low-resistance resistors for a variety of applications such as the ones above. Isabellenhütte & Rhopoint Components are your ideal partners when it comes to achieving the best possible measurement results in the smallest spaces. Please visit www.isabellenhuette.de for more information.