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The SMK 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 with a resistance range of 0.008Ω to 0.5Ω, has a TC of below 50ppm/°C over the temperature range of between +20°C and +60°C for resistance values of 0.015Ω or more and offers excellent long term stability. The SMK model offers these capabilities in a 1206 chip size.
- Current sensing precision resistor
- 2-terminal surface-mount design in a 1206 chip size
- Resistance range from 0.008Ω to 0.5Ω
- Tolerances of ±1% and ±5%
- TCR values from <±50 ppm/°C (+20°C to +60°C)
- Power rating of 1W (at 110°C)
- Constant current up to 11A (0.008Ω)
- Temperature range -65°C to +170°C
- Inductance of <3nH
- Stability of <0.5% (TK=80°C) / <01% (TK=110°C) (at rated power, deviation after 2000h)
- Dielectric withstanding voltage of 200V AC/DC
- AEC-Q200 qualified
Typical applications for the SMK 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
Isabellenhütte SMK Series Specification Table
| Attributes | Value |
|---|---|
| Resistance value | 8mΩ to 500mΩ |
| Tolerance* | ±1% / ±5% |
| TCR (20-60°C) | R<15mΩ: <100ppm/°C R≥15mΩ: <50ppm/°C |
| Temperature range | -65°C to +170°C |
| Power rating | 1W |
| Internal heat resistance | <60°C/W (Rthi) |
| Inductance | <3nH |
| Stability (deviation after 2000hrs) | <0.5% (Tᴋ = 80°C) / <1% (Tk=110 °C) Tᴋ = Terminal Temperature |
* For a full list of available tolerances, please see the Ordering Info tab
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.
