AP851 2R J

Through Hole Resistors are commonplace in many electronic circuit designs due to their ease of use, wide variety of available resistances, low cost and availability. The AP 851 2R J is a common resistor that is used to control current in a circuit by providing a resistance to the flow of current. This resistor is a two-watt, five-band power resistor with four bands of color code, and has an outer power rating of 851 watts.

The main applications of the AP 851 2R J are in power circuits which require a large amount of power to be dissipated in a comparatively small package. This is achieved by having an outer casing which is conductive and dissipates heat effectively, while still providing a low-impedance connection for the resistor. This type of resistor is typically used in heavy duty applications such as power supplies, audio amplifiers, high-frequency converters, and other power applications.

The working principle behind the AP 851 2R J is relatively simple. Current flowing through the resistor is diverted by the resistance, which is measured in ohms. The current will eventually reach its destination through the resistor, but the path it takes is much longer and the voltage loss is consequently higher than if the current were to flow directly without resistance. This is beneficial for applications that require high voltage loss, such as in power supplies, where the additional resistance helps to reduce the voltage that is passed on to other parts of the circuit.

The resistance of the AP 851 2R J is indicated by four bands of color code. The first two bands identify the resistance value, while the third band indicates the tolerance of the value. The fourth band is the voltage rating of the resistor. By reading these four bands, the exact resistance of the resistor can be determined.

The AP 851 2R J is a standard, through-hole resistor which is widely available and used in many applications. It is valued for its ease of use, wide variety of available resistances, low cost, and ability to dissipate large amounts of power in a small package. The color code bands indicate the resistance value, and the working principle of the resistor is simple: current is diverted by the resistance, resulting in a greater voltage loss when compared to a direct current flow. Therefore, the AP 851 2R J is an excellent choice for power circuits that require high voltage loss.