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The UHPS Ultra high power precision 4-terminal shunt resistor series from RARA offers a power rating of up to 100W on a suitable heat sink, with a maximum current limit of 707A (resistance value of 0.2mΩ). The UHPS series is available with resistance values of 0.2mΩ and 1mΩ, tolerance options as low as ±0.05% and a maximum TCR of ±10 ppm/°C. Short-term stability as low as ≤±0.1% at maximum current load for 1 hour.
- 4-terminal shunt resistor
- Temperature range of -55°C up to +100°C
- Maximum rated power of 100W (≤ +50°C)
- Resistance options of 0.2mΩ and 1mΩ
- Tolerances options of ±0.05% (A), ±0.1% (B), ±0.5% (D) and ±1% (F)
- Maximum working current of 707A at 0.2mΩ
- Dielectric withstanding voltage of 500V AC for 60 seconds at a maximum leakage current of 2mA
- TCR of ±10 ppm/°C
- Short-term stability of ΔR ≤±0.1% for 1 hour at terminal & copper flange temperature ≤+50°C
Typical applications for the UHPS series include:
- High current sensing
- High capacity battery management
- Charge/discharge test equipment
- Laboratory power supplies
RARA UHPS Series Specification Table
| Attributes | Value |
|---|---|
| Temperature range | -55°C to +100°C |
| Rated power | 100W (on a suitable heatsink) |
| Resistance values | 0.2mΩ / 1mΩ |
| Tolerance | ±0.05% (A) / ±0.1% (B) / ±0.5% (D) / ±1% (F) |
| Maximum working current | 707A (at 1mΩ) |
| TCR | ±10ppm/°C |
| Dielectric withstanding voltage | 500V AC for 60s (Max. leakage current 2mA) |
| Short-term stability | ΔR ≤±0.1% (for 1hr at terminal & copper flange temperature ≤+50°C) |