400W Planar Thick Film, Non-inductive High-power Resistor

Technical Features

• Special resin material filling, large creepage distance and clearance.

• Professional design ensures low inductance and capacitance values.

• Special resistance material ensures stability under high power and pulse conditions.

• Fixed installation with two M4 screws ensures heat sink attachment pressure between 120-160 Newtons.

• Raw materials meet UL94-V0 standards.

Specifications

• Resistance: 0.5Ω ~ 1MΩ

• Tolerance: ±5% ~ ±10%, higher precision available upon request.

• Temperature coefficient: ±150ppm/°C (25°C ~ 105°C), other temperature coefficients available upon request.

• Rated power: 400W, maximum operating voltage not exceeding 5,000VDC.

• Short-term overload: 700W, 70°C, 10 seconds, ΔR ≤ ±(0.4%R + 0.001Ω).

• Insulation withstand voltage: 6kVrms, 50Hz, 1 minute, maximum 12kVrms upon request.

• Partial discharge: 4kVrms, <10pC, maximum 7kVrms upon request.

• Insulation resistance: 500V, minimum 1GΩ.

• Creepage distance: Minimum 42mm.

• Clearance: Minimum 14mm.

• Inductance: ≤80nH.

• Distributed capacitance (Mass): ≤110pF.

• Distributed capacitance (Parallel): ≤40pF.

• Moisture resistance: 56 days/40°C, RH ≥ 95%, ΔR ≤ ±(0.25%R + 0.001Ω).

• Temperature cycle: -55°C/+125°C (each 0.5h), 5 cycles, ΔR ≤ ±(0.2%R + 0.001Ω).

• High-frequency vibration: MIL-Std-202, method 204, condition D, ΔR ≤ ±(0.2%R + 0.001Ω).

• Power endurance: Rated power 1,000 hours, base temperature 85°C, ΔR ≤ ±(0.4%R + 0.001Ω).

• Operating temperature range: -55°C ~ +155°C.

• Terminal installation: M4/M5 screw, maximum torque 2Nm.

• Resistor mounting: M4 screw, maximum torque 1.8Nm.