The WMHP100-9R1J is a wirewound power resistor from TT Electronics, designed for high power dissipation and stability in demanding applications. This resistor offers a robust construction and excellent performance characteristics, making it suitable for various industrial and power electronics applications. Its non-inductive winding minimizes parasitic inductance, making it suitable for high-frequency applications as well.

Applications

• Power Supplies: Used as a bleeder resistor or current limiting resistor in power supply circuits.
• Motor Drives: Employed in motor drive systems for braking or dynamic braking purposes.
• Inverters: Utilized in inverters for current sensing and protection circuits.
• High Power Amplifiers: Used as a load resistor in high-power amplifier designs.
• Welding Equipment: Found in welding equipment for current control and regulation.

Features

• High Power Rating: Capable of dissipating significant power without failure.
• Wirewound Construction: Provides high stability and precision.
• Non-Inductive Winding: Minimizes parasitic inductance for high-frequency applications.
• Robust Design: Designed to withstand harsh environmental conditions.
• Low Temperature Coefficient: Ensures stable performance over a wide temperature range.

Benefits

• Reliable Performance: Provides consistent and reliable performance in demanding applications.
• Improved Circuit Stability: Minimizes the impact of parasitic inductance on circuit performance.
• Enhanced Power Handling: Allows for higher power dissipation in a compact package.
• Long Service Life: Designed for extended operational life under stressful conditions.
• Simplified Design: Simplifies the design process by providing a reliable and stable power resistor solution.

The WMHP100-9R1J typically features a resistance tolerance of around 5% and a temperature coefficient of resistance (TCR) of approximately ±50 ppm/°C. The resistance value is 9.1 ohms, indicated by 9R1J in the part number. The resistor is constructed using a ceramic core and a high-temperature silicone coating for enhanced durability and insulation. The termination leads are typically made of tinned copper for easy soldering and reliable connections. This resistor is designed to meet or exceed industry standards for power resistors, ensuring its suitability for critical applications.