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The SMT 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 0.004Ω to 4.7Ω, TCR of <50 ppm/°C for values ≥0.010Ω and <100 ppm/°C for values <0.010Ω (between +20°C and +60°C) and offers excellent long term stability. The SMT model offers these capabilities in a 2817 chip size.
- Current sensing precision resistor
- 2-terminal surface-mount design in a 2817 chip size
- Resistance range from 0.004Ω to 4.7Ω
- Tolerances of ±0.5%, ±1%, ±2% and ±5%
- TCR from <50±ppm/°C (≥0.010Ω) (+20°C to +60°C)
- Power rating up to 7W (at +70°C)
- Constant current up to 35A (0.004Ω)
- Temperature range from -65°C to +170°C
- Inductance of <3nH
- Stability of <0.5% (TK=75°C) / <1% (TK=105°C)
for values <1Ω (at rated power, deviation after 2000h) - Dielectric withstanding voltage of 200V AC/DC
- AEC-Q200 qualified
Typical applications for the SMT 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 SMT Series Specification Table
| Attributes | Value |
|---|---|
| Resistance value * | 4mΩ to 4.7Ω |
| Tolerance * | ±0.5% / ±1% / ±2% / ±5% |
| TCR (20-60°C) | <50ppm/°C for ≥10mΩ <100ppm/°C for <10mΩ |
| Temperature range | -65°C to +170°C |
| Power rating (P70°C) | 7W for <1Ω 5W for ≥1Ω |
| Power rating (P105°C) | 5W for <1Ω 3W for ≥1Ω |
| Internal heat resistance | <13°C/W (Rthi) for <1Ω <22°C/W (Rthi) for ≥1Ω |
| Inductance | <3nH |
| Stability (deviation after 2000hrs) | <0.5% (Tᴋ = 75°C) / <1% (Tk=105 °C) for parts <1Ω Tᴋ = Terminal Temperature |
* Please contact us or see the Ordering info tab for further details
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.
