PWR220T-20-56R0F

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Through Hole Resistors are components that counter the flow of electricity. The acronym PWR stands for Power, which is a measure of how much electrical current can flow through the resistor. The numbering system used in this example, "220T-20-56R0F", can be used to decipher the properties of the device.

Resistance Value

The first three digits of the number, "220T", refer to the resistance of the resistor. In this case, the resistance value is 220 ohms,a measure of the impedance of current when it passes through the component. This value is also referred to as "impedance" or "resistance".

Tolerance

The fourth character, "T", refers to the tolerance of the resistor. Tolerance can be thought of as the allowable margin of error, and is the amount a resistor can deviate from its stated nominal value. In this example, the tolerance is 20%, meaning that the resistors can deviate from 220 ohms up to 264 ohms at the most.

Power Rating

The "56R0F" characters indicate the power rating of this specific resistor. This indicates how much electrical power the resistor can dissipate before it fails or gets damaged. In a nutshell, the "56R0F" characters refer to 2.5 Watts, meaning that the resistor can handle up to 2.5 Watts of electrical power at the rated temperature without failure.

Application Field

This particular type of resistor, PWR220T-20-56R0F, is most commonly used in high-power applications, such as in voltage regulators, power supplies, and other power electronics. They are also used in the highly sensitive circuits found in medical equipment, military radars, and avionics systems, as their high tolerance and reliable performance make them ideal for these critical applications.

Working Principle

Through Hole Resistors work by providing a resistive force that reduces the flow of electrical current through a circuit. When current passes through the resistor, it causes collisions between the electrons and creates friction. This friction is what slows down the flow of current, thus controlling the amount of electricity that flows through the circuit. It is also used to convert energy from one form (such as electrical energy) to another, which is known as power conversion.

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