TMRW02-Tube style Wire-wound Power Resistor
A Tube style Wire-wound Power Resistor is a type of electrical component specifically designed to handle high power levels in various electronic and electrical circuits. Its core structure consists of a cylindrical, tube-shaped ceramic or metal alloy core (the "tube" component), which serves as both a mechanical support and a heat-dissipating medium.
Wrapped around this tube core is a resistive wire, typically made from materials like nichrome (a nickel-chromium alloy) or constantan, known for their stable resistivity and ability to withstand high temperatures. The length and gauge of this wire are precisely calculated to achieve the desired resistance value, as resistance is directly proportional to the wire's length and inversely proportional to its cross-sectional area.
To ensure structural integrity and electrical insulation, the wire winding is often coated or encased in a protective layer, such as a heat-resistant enamel, silicone, or a ceramic coating. This layer prevents short circuits between adjacent wire turns and shields the winding from environmental factors like dust, moisture, or mechanical damage.
One of the key features of the tube style design is its excellent heat dissipation capability. The tube's large surface area allows for efficient transfer of heat generated during operation (due to the Joule-Thomson effect, where electrical energy is converted into heat as current flows through the resistive wire) to the surrounding environment. This makes it suitable for high-power applications, such as power supplies, motor drives, industrial control systems, and audio amplifiers, where significant amounts of power are dissipated as heat.
Additionally, many tube style wire-wound power resistors are designed with mounting brackets or flanges attached to the tube, enabling secure installation onto heat sinks or chassis to further enhance cooling. They are available in a wide range of resistance values (from a few ohms to several kiloohms) and power ratings (often from 5 watts up to several hundred watts or more), making them versatile for use in scenarios requiring precise current limitation, voltage division, or power dissipation in high-power circuits.
In summary, this resistor combines the robustness of wire-wound construction with the thermal efficiency of a tubular design, making it a reliable choice for applications demanding high power handling, stability, and durability under harsh operating conditions.
Feature:
High load, heat-sink performance
Non-flame
Stable performance of high voltage, pulsing load
Lead free, RoHS compliant, IP51 protection
Appliacation:
Power supply system, Meter/Instruments system, Industrial,automation system
Part Number:
Audited Supplier 
){kind=link}