Chassis Mount Resistors

Chassis Mount Resistors are resistor components designed for high-power applications. They are secured directly to the equipment rack or heat sink via metal brackets or bolts.

 

1. What are the Key Features of Chassis Mount Resistors?

High Power Capacity: Rated power range 50W-1000W, with efficient heat dissipation achieved through the metal housing.

 

Industrial-Grade Construction: Utilizing a ceramic core and aluminum housing, they withstand extreme temperatures of -55°C to 275°C.

 

Mounting Advantages: Providing #10 screw holes for vertical or horizontal mounting.

 

2. What are the Typical Applications of Chassis Mount Resistors?

Power Systems: Inverter Braking Resistors, UPS Power Distribution Units.

 

Industrial Control: Servo Motor Dynamic Braking, Welding Equipment Current Regulation.

 

New Energy: Photovoltaic Inverter MPPT Modules, Electric Vehicle Charging Stations.

 

3. Key Selection Parameters for Chassis Mount Resistors

Parameter

Typical Range

Test Standard

Resistance Tolerance

±1% to ±10%

IEC 60115-8

Temperature Coefficient

±50ppm/°C to ±300ppm/°C

MIL-R-26

Insulation Resistance

≥1000MΩ@500VDC

UL 94V-0

 

4. Technology Trends of Chassis Mount Resistors

Material Innovation: Aluminum nitride substrates replace alumina substrates, increasing thermal conductivity by 3 times.

 

Smart Integration: Some manufacturers offer smart resistor models with integrated temperature sensors.

 

Customization: Supports non-standard resistance values (e.g., 0.001Ω to 10MΩ) and special coating requirements.