200W 75Ω Aluminum Shell Resistor RXLG for Servo Brake Applications with High Power Dissipation
This high-power aluminum shell resistor features a robust aluminum alloy construction with specialized process design to effectively manage high power dissipation and heat generation. Engineered for reliable performance in continuous operation environments, it is widely used in industrial equipment, control systems, power transformers, automation systems, and testing instruments.
The aluminum alloy shell provides excellent thermal conductivity, combined with optimized heat sink design and structural layout for significantly improved cooling efficiency. Compared to traditional ceramic or metal resistors, aluminum shell resistors dissipate heat more effectively under high-power loads, reducing temperature rise and extending equipment service life.
- Metal casing with excellent thermal conductivity
- Designed with heat dissipation grooves
- Ideal for high-power application scenarios
| Test Project | Test Conditions | Performance |
|---|---|---|
| Temperature Coefficient | Resistance measured at room temperature and +100°C, calculating resistance change rate per degree | ±300ppm/°C |
| Short Time Overload | Apply voltage of 10 times rated power or maximum load voltage (whichever is smaller) | △R≤±(2%+0.05Ω) |
| Resistance to Welding Heat | Immerse in tin furnace at 350±10°C for 2-3 seconds | △R≤±(1%+0.05Ω) |
| Weldability | Immerse in tin furnace at 260±5°C for 2-3 seconds | Solder area covers over 95% |
| Temperature Cycle | -55°C for 30 minutes, +25°C for 10-15 minutes, +275°C for 30 minutes, +25°C for 10-15 minutes (5 cycles total) | △R≤±(1%+0.05Ω) |
| Load Life in Humidity | Overload rated voltage or maximum working voltage (lower value) for 1000 hours (1.5 hours on, 0.5 hours off) at 40±2°C and 90-95% relative humidity | △R≤±(5%+0.05Ω) |
| Load Life in Heat | At 70±2°C, apply rated voltage or maximum operating voltage (whichever is lower) for 1000 hours (1.5 hours on, 0.5 hours off) | △R≤±(5%+0.05Ω) |
| Noncombustibility | Add AC load at 5, 10, and 16 times rated power for 5 minutes each | No obvious flames |
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