Power Resistor SUT - wirewound

Compact wirewound power resistor for precise current and voltage control

The SUT series power resistors are designed for applications that require compact dimensions, high load capability and good pulse handling. The resistance wire is embedded in a high-temperature silicone–epoxy encapsulation, allowing the components to be operated safely even under harsh environmental conditions.

With a resistance range from 0.01 Ω to 260 kΩ and power ratings from 1 W to 15 W (0 W at +250 °C), the SUT series covers a wide variety of tasks – from low-ohmic current-sense and load applications to higher-ohmic resistors for voltage control and reference functions. Resistance tolerances from 0.01% to 10% support both high-precision and cost-optimised designs. A temperature coefficient from ±20 ppm/°C ensures that the resistance value drifts only moderately over the specified temperature range.

The SUT series is designed for very good pulse behaviour and is tested according to comprehensive MIL-STD test programmes, including overload, load life, damp heat, temperature cycling, shock and vibration. The permissible resistance changes remain within a few tenths of a percent. Combined with dielectric strength up to 1000 VAC (500 VAC for the smallest types), this makes SUT resistors well suited for current and voltage control, power and charge management, power supplies, drive electronics and as reference or load resistors in industrial equipment.

Options

• Resistance range 0.01 Ω–260 kΩ with freely selectable values (in xxxkxxx format e.g. 10k000, 10k100)
• Resistance tolerances from 0.01% to 10% (depending on type and resistance value)
• Temperature coefficients from ±20 ppm/°C; graded TCR classes depending on resistance value
• Optional non-inductive winding (subject to MOQ) for applications with fast current or voltage pulses