HSA2539RF

Chassis Mount Resistors are often used to provide electrical resistance to a circuit in order to limit current flow. They can be constructed from a variety of materials, including carbon-film, metal-film, wire-wound or thick-film, designed to provide precise and repeatable resistance. HSA2539RF is one of the most popular chassis mount resistors.

Application Field of HSA2539RF

HSA2539RF is a 25 Ohm, wire wound resistor rated for 2W power handling. It\'s designed for the most demanding applications that require high power dissipation and pulse stability. HSA2539RF is suitable for electric and electronic equipments in such fields as industrial, telecommunications and computers.

It is a widely used resistor in applications, including motor control, EMI/RFI filtering, printers, copiers and display circuits. It is also optimal for surge protection and may be used in industrial control systems, switch-mode power supply applications and electrical power distribution.

Working Principle of HSA2539RF

HSA2539RF is wound with a special alloy of Nickel and Chrome which provides temperature stability up to 200°C and excellent pulse stability. The thin film of metal alloy on the winding ensures a constant resistance across the resistor even at high temperatures. This results in the resistor having a precisely controlled resistance value and extremely low thermal EMF.

The resistor body is composed of conductive carbon which is fired at very high temperatures to bond it to the winding. This makes it very durable and able to withstand both mechanical and thermal shock. The ceramic casing provides an efficient heat sink to help disperse heat away from the resistor. There is also a flame-retardant paint applied to the outside of the resistor which helps to dissipate heat and protect it from electrical shorts.

HSA2539RF is an ideal resistor choice for applications that require reliable operation over a wide temperature range. The excellent heat dissipation properties of the ceramic casing and the temperature stability of the special alloy winding make it ideal for power supply and other high current applications.