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It is a type of resistor that has the capacity to take electrical energy and convert this energy into heat and protects the circuit components by effectively dissipating the excess heat generated during this conversion.

In the event that the electrical load increases or the circuit operates without a certain restriction, overheating can be observed in some circuit elements. This excessive heat can accumulate on the resistors and cause damage to the circuit.

At this point, cooling resistors come into play to protect the circuit and components.

How to Choose a Heatsink Resistor?

Heatsink resistors are often used in electrical and electronic applications with high power requirements. These resistors are designed to effectively dissipate the heat generated during the passage of high currents. Choosing a correct heat sink resistor directly affects the efficiency, safety and lifetime of the system. So, how to choose a heatsink resistor? Here is your step-by-step guide:

  1. Power Assessment

Firstly, you need to know the maximum power rating your system requires. Heatsink resistors are usually rated in watts. The rated power of the resistor is the maximum power it can continuously handle. Operating the resistor above this rating can cause overheating and damage to the component.

  1. Operating Temperature

The resistor operates at maximum efficiency at a certain temperature. Not exceeding this temperature value prolongs the life of the resistor. The air flow in your system affects the cooling capacity of the resistor. Therefore, choose by considering the temperature values of the environment to be used.

  1. Resistance Value

Resistance value is expressed in Ohms. Carefully review the circuit schematic and design criteria to determine the appropriate resistor value for the needs of your circuit.

  1. Physical Size

Select the size of the resistor taking into account the limitations of the space to be used. The physical size is usually directly related to the heat dissipation capacity of the heat sink resistor.

  1. Material and Construction

Heatsink resistors are usually made of heat-resistant materials such as metal or ceramics. The quality of the material affects how effectively the resistor dissipates heat.

Cooled Resistor Application Areas

Soğutuculu dirençler, genellikle yüksek enerji ihtiyaçlarına ve aşırı ısı üretimine sahip sistemlerde kullanılır. Bu tür dirençler, enerjinin bir kısmını ısı enerjisi olarak dağıtarak sistemleri koruma ve kontrol altında tutma görevini üstlenir. İşte soğutuculu dirençlerin en yaygın uygulama alanları:

  1. Industrial Motor Control

Cooled resistors provide protection of motors from overcurrents in industrial motor control systems. Especially when the motors need to be stopped quickly, these resistors prevent damage to the motor by converting the energy into heat in the braking process.

  1. Power Electronics

In high power transformers, inverters and converters, cooled resistors stabilise circuits and help dissipate excess energy as heat.

  1. Wind and Solar Energy Systems

In renewable energy systems, due to the fluctuating energy production, cooled resistors ensure a balanced distribution of energy and prevent overloading of the systems.

  1. Railway Systems

In electric trains and trams, the energy generated during deceleration or stopping is converted into heat energy through cooled resistors to prevent damage to the system.

  1. Backup Power Systems

In backup power supplies, cooled resistors in response to load changes ensure balanced operation of the system and minimise the negative effects of sudden current fluctuations.

  1. Electronic Test and Measurement Devices

Cooled resistors simulate the load in test and measurement devices and check whether the devices are working correctly.

  1. High Energy Dissipation: Heatsink resistors can effectively dissipate high energy loads. This helps dissipate excess energy as heat.
  2. System Protection: Cooled resistors protect systems by preventing overcurrents that can damage circuit elements.
  3. Long Life: Thanks to their cooling properties, cooled resistors are more resistant to high temperatures and thus offer a long-lasting use.
  4. Different Application Areas: Their ability to be used in a wide range of applications makes these resistors highly flexible.
  5. Advanced Heat Management: Cooled resistors provide effective heat management even under high temperature conditions.

Heatsink Resistors: Technical Specifications and Specifications

Cooled resistors, one of the indispensable components of electrical and electronic applications, are specially designed to meet high energy requirements. These resistors effectively dissipate high energy loads, preventing excessive heat generation and enabling systems to operate more efficiently. In this article, we will take a detailed look at the main technical features and specifications of cooled resistors.

Main Technical Specifications

  1. Resistance Value: Cooled resistors have a specific resistance value. This value is usually expressed in Ohm (Ω) units. The value of the resistor determines how much current will flow in the circuit.
  2. Power Capacity: Heatsink resistors have a specific power capacity. This value specifies the maximum amount of power the resistor can carry and is usually expressed in Watts (W).
  3. Operating Temperature: Refrigerated resistors can operate effectively within a certain operating temperature range. This temperature range refers to the temperature values at which the resistor operates stably.
  4. Cooling Type: Different cooling methods can be used in resistors. These can be natural airflow, forced airflow or liquid cooling.

Important Specifications

  1. Material: The materials used in the manufacture of heat sink resistors directly affect the performance and durability of the resistor.
  2. Dimensions: The physical dimensions of the resistor can affect the assembly process and the application in which it will be used.
  3. Thermal Resistance: The resistance value of the resistor against temperature rise, usually expressed in °C/W.
  4. Tolerance: The rate of deviation of the resistor from its nominal value. Usually expressed as a percentage (%).
  5. Maximum Operating Voltage: It is the voltage value that the resistor can carry as maximum.

When choosing a heatsink resistor for use in your electrical and electronic projects, it is critical for the efficiency and safety of your application to consider the technical features and specifications mentioned above. A correct choice both increases energy efficiency and minimises possible failures.


The resistor dimensions in this table represent standard resistors. Special resistor manufacturing other than these resistors is put into the production stage by our company. Special resistors are produced in different diameters, lengths and different wire winding requests.

Heatsink Resistor Images

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