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The SMS-PW space approved current sensing precision resistor series from Isabellenhütte offers SnPb tinned connections suitable for aviation and aerospace applications being ESCC 4001/027 qualified. 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 0.003Ω to 1Ω, TCR of ±50ppm/°C at ≥0.01Ω or ±100ppm/°C at <±0.01Ω over the temperature range of +22°C to +60°C (please see the table below for further information) and offers excellent long term stability. The SMS-PW model offers these capabilities in a 2512 chip size.
- Space approved current sensing precision resistor
- 2-terminal surface-mount design in a 2512 chip size
- Resistance range from 0.003Ω to 1Ω
- Tolerances of ±0.5% and ±1%
- TCR of ±50ppm/°C at ≥0.01Ω or ±100ppm/°C at <±0.01Ω (+22°C to +60°C)
- Permanent power rating of 2W (at +120°C)
- Constant current up to 25A (0.005Ω)
- Temperature range from -55°C to +170°C
- Stability of <0.2% (TK=120°C)
(at rated power, deviation after 2000h according to ESCC generic specification) - SnPb tinned connections
- ESCC 4001/027 qualified
Typical applications for the SMS-PW Space approved current sensing precision resistor series include:
- Aviation and aerospace applications
- Current sensor for power hybrid applications
- Control systems for the automotive market
- Frequency converters and power modules
- Switch mode power supplies
Isabellenhütte SMS-PW Series Specification Table
| Attributes | ||
|---|---|---|
| Resistance value * | 3mΩ to <10mΩ | 10mΩ to 1Ω |
| Tolerance * | ±0.5% / ±1% | ±0.5% / ±1% |
| TCR | -140, +0ppm/°C (-55 to +22°C) ±100ppm/°C (+22°C to +170°C) ±100ppm/°C (+22°C to +60°C) | -100, +0ppm/°C (-55 to +22°C) ±60ppm/°C (+22°C to +170°C) ±50ppm/°C (+22°C to +60°C) |
| Temperature range | -55°C to +170°C | -55°C to +170°C |
| Power rating | 2W | 2W |
| Stability (deviation after 2000hrs) According to ESCC Generic Specification | <0.2% (Tᴋ = 120°C) Tᴋ = Terminal Temperature | <0.2% (Tᴋ = 120°C) Tᴋ = Terminal Temperature |
* Please contact us or see the Ordering Info tab for more information on the standard resistance values and tolerance
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.
