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Chassis Mount Resistors

Category Introduction

Chassis mount resistors are passive components that oppose the flow of current and are used to adjust signal levels, divide voltages, bias active elements, or terminate transmission lines among other uses. These resistors are typically larger and may dissipate up to 2500 watts of heat energy. They are mounted using housing flanges, screws, braces, or brackets.

Product List

25194 Items
PDF Mfr Part # Quantity
Available		 UnitPrice RFQ Series Packaging Product StatusResistanceTolerancePower (Watts)CompositionTemperature CoefficientOperating TemperatureFeaturesCoating, Housing TypeMounting FeatureSize / DimensionHeight - Seated (Max)Lead StylePackage / CaseFailure Rate
RH05010R00FE02
RH05010R00FE02
RES CHAS MNT 10 OHM 1% 50W
Vishay Dale
 5 $20.26
RH Bulk Active10 Ohms±1%50WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
RH050100R0FE02
RH050100R0FE02
RES CHAS MNT 100 OHM 1% 50W
Vishay Dale
 31 $20.28
RH Bulk Active100 Ohms±1%50WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
NH250100R0FJ01
NH250100R0FJ01
RES CHAS MNT 100 OHM 1% 250W
Vishay Dale
 4 $263.99
NH Bulk Active100 Ohms±1%250WWirewound±20ppm/°C-55°C ~ 250°CMoisture Resistant, Non-InductiveAluminumFlanges4.500" L x 3.000" W (114.30mm x 76.20mm)2.219" (56.37mm)Solder LugsAxial, Box-
RH0258R000FE02
RH0258R000FE02
RES CHAS MNT 8 OHM 1% 25W
Vishay Dale
 152 $6.06
RH Bulk Active8 Ohms±1%25WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.062" L x 1.080" W (26.97mm x 27.43mm)0.561" (14.25mm)Solder LugsAxial, Box-
RH025250R0FE02
RH025250R0FE02
RES CHAS MNT 250 OHM 1% 25W
Vishay Dale
 8 $6.19
RH Bulk Active250 Ohms±1%25WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.062" L x 1.080" W (26.97mm x 27.43mm)0.561" (14.25mm)Solder LugsAxial, Box-
RH01050R00FE02
RH01050R00FE02
RES CHAS MNT 50 OHM 1% 12.5W
Vishay Dale
 32 $11.48
RH Bulk Active50 Ohms±1%12.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-
RH0101K000FE02
RH0101K000FE02
RES CHAS MNT 1K OHM 1% 12.5W
Vishay Dale
 32 $11.49
RH Bulk Active1 kOhms±1%12.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-
RH010100R0FE02
RH010100R0FE02
RES CHAS MNT 100 OHM 1% 12.5W
Vishay Dale
 54 $11.47
RH Bulk Active100 Ohms±1%12.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-
RH00510R00FE02
RH00510R00FE02
RES CHAS MNT 10 OHM 1% 7.5W
Vishay Dale
 35 $15.01
RH Bulk Active10 Ohms±1%7.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.600" L x 0.646" W (15.24mm x 16.41mm)0.335" (8.51mm)Solder LugsAxial, Box-
RH0251R000FE02
RH0251R000FE02
RES CHAS MNT 1 OHM 1% 25W
Vishay Dale
 17 $17.17
RH Bulk Active1 Ohms±1%25WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.062" L x 1.080" W (26.97mm x 27.43mm)0.561" (14.25mm)Solder LugsAxial, Box-
RH025100R0FC02
RH025100R0FC02
RES CHAS MNT 100 OHM 1% 25W
Vishay Dale
 29 $19.17
RH Bulk Active100 Ohms±1%25WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.062" L x 1.080" W (26.97mm x 27.43mm)0.561" (14.25mm)Solder LugsAxial, Box-
RH02512R00FE02
RH02512R00FE02
RES CHAS MNT 12 OHM 1% 25W
Vishay Dale
 51 $17.52
RH Bulk Active12 Ohms±1%25WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.062" L x 1.080" W (26.97mm x 27.43mm)0.561" (14.25mm)Solder LugsAxial, Box-
RH0508R000FE02
RH0508R000FE02
RES CHAS MNT 8 OHM 1% 50W
Vishay Dale
 38 $20.33
RH Bulk Active8 Ohms±1%50WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
RH05030R00FE02
RH05030R00FE02
RES CHAS MNT 30 OHM 1% 50W
Vishay Dale
 28 $20.40
RH Bulk Active30 Ohms±1%50WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
TMC05020R00FE02
TMC05020R00FE02
RES CHAS MNT 20 OHM 1% 50W
Vishay Dale
 21 $36.11
TMC Bulk Active20 Ohms±1%50WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
TMC0501R000FE02
TMC0501R000FE02
RES CHAS MNT 1 OHM 1% 50W
Vishay Dale
 27 $36.16
TMC Bulk Active1 Ohms±1%50WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
TMC0502R000FE02
TMC0502R000FE02
RES CHAS MNT 2 OHM 1% 50W
Vishay Dale
 9 $35.96
TMC Bulk Active2 Ohms±1%50WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges1.968" L x 1.140" W (49.99mm x 28.96mm)0.625" (15.87mm)Solder LugsAxial, Box-
RH01033R00FE02
RH01033R00FE02
RES CHAS MNT 33 OHM 1% 12.5W
Vishay Dale
 44 $11.43
RH Bulk Active33 Ohms±1%12.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-
RH01010R00FE02
RH01010R00FE02
RES CHAS MNT 10 OHM 1% 12.5W
Vishay Dale
 7 $11.41
RH Bulk Active10 Ohms±1%12.5WWirewound±20ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-
RH0101R000FE02
RH0101R000FE02
RES CHAS MNT 1 OHM 1% 12.5W
Vishay Dale
 71 $11.52
RH Bulk Active1 Ohms±1%12.5WWirewound±50ppm/°C-55°C ~ 250°CMoisture ResistantAluminumFlanges0.750" L x 0.800" W (19.05mm x 20.32mm)0.405" (10.29mm)Solder LugsAxial, Box-

About Chassis Mount Resistors

What are Chassis Mount Resistors?

Chassis Mount Resistors

Chassis mount resistors are a specialized category of resistors designed to be mounted directly onto a chassis or heat sink. These components are crucial in managing and dissipating heat generated in high-power applications. By converting electrical energy into heat, they help regulate current flow and maintain circuit stability. Their robust construction and ability to handle significant power loads make them indispensable in various industrial and electronic applications. Typically, they are used in environments where space is limited, and efficient heat dissipation is critical.

Types of Chassis Mount Resistors

Wirewound Chassis Mount Resistors

Wirewound resistors are known for their precision and ability to handle high power loads. They are constructed by winding a metal wire around a ceramic, plastic, or fiberglass core. This design allows them to withstand high temperatures and provide excellent stability and reliability, making them ideal for applications requiring precise resistance values.

Thick Film Chassis Mount Resistors

Thick film resistors are created by applying a resistive film onto a ceramic substrate. These resistors are valued for their compact size and cost-effectiveness. While they may not handle as much power as wirewound resistors, they offer good performance in moderate power applications and are often used in consumer electronics and automotive industries.

Metal Oxide Chassis Mount Resistors

Metal oxide resistors are made by depositing a metal oxide film onto a ceramic core. They offer excellent thermal stability and can operate at higher temperatures than other types. Their durability and resistance to environmental factors make them suitable for harsh conditions, such as those found in industrial machinery and power generation equipment.

How to choose Chassis Mount Resistors?

When selecting chassis mount resistors, several key parameters should be considered:

  • Power Rating: Ensure the resistor can handle the power levels in your application without overheating.
  • Resistance Value: Choose a resistor with the appropriate resistance to achieve the desired current regulation.
  • Tolerance: Consider the acceptable deviation from the nominal resistance value, especially in precision applications.
  • Temperature Coefficient: Evaluate how the resistance value changes with temperature variations.
  • Size and Mounting: Ensure the resistor fits within the available space and is compatible with the mounting method.

To evaluate product quality and reliability, review supplier certifications, customer reviews, and product testing results. Consider environmental factors such as humidity, temperature extremes, and exposure to chemicals, which may affect performance. Proper installation, including secure mounting and adequate heat dissipation, is crucial for optimal operation.

Applications of Chassis Mount Resistors

Automotive Industry

In the automotive sector, chassis mount resistors are used in applications such as braking systems, power steering, and engine control units. They help manage power distribution and ensure the reliable operation of electronic components under varying load conditions.

Industrial Machinery

Industrial machinery often requires robust components to handle high power loads and harsh environments. Chassis mount resistors are used in motor drives, welding equipment, and power supplies, where they help regulate current and protect sensitive components from power surges.

Telecommunications

In telecommunications, chassis mount resistors are employed in power amplifiers and signal processing equipment. They ensure stable operation by managing heat dissipation and maintaining consistent performance over extended periods.

Renewable Energy Systems

Renewable energy systems, such as solar and wind power installations, use chassis mount resistors to manage power conversion and distribution. They help protect inverters and other critical components from overloads and ensure efficient energy transfer.

Consumer Electronics

In consumer electronics, chassis mount resistors are found in audio equipment, televisions, and home appliances. They provide reliable performance in compact spaces, ensuring devices operate efficiently and safely.