PNP200JR-52-0R12

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A Through Hole Resistor, such as the PNP200JR-52-0R12, is an electronic component that limits or regulates the flow of electric current in a circuit, and helps protect other parts of the circuit from damage by excessive electrical current (overcurrent).

A Through Hole Resistor normally consists of two thick metal pieces (leads) that protrude through a board, a substrate containing a metallic-oxide material, and a metal or ceramic film, which contains electrical current. The two metal leads are connected to the resistor, creating a junction between the two leads. This junction is then connected to the external circuit, allowing the resistor to regulate the electrical current flowing through it.

The PNP200JR-52-0R12 Through Hole Resistor is a special type of resistor that operates on the principle of negative temperature coefficient (NTC) ohmic resistance. It is a two-terminal component and it is one of the biggest advantages compared to other more complex multi-terminal components such as the thre-terminal Resistors (3TR). The NTC resistors have a basic feature: they have a significantly higher resistance at room temperature than at higher temperatures. This particular feature has several applications, some of the most important of which can be found in temperature measurement, control of thermal circuit elements, and protection of sensitive electronic equipment.

This type of resistor is particularly useful in temperature control and in automotive engines, because the resistance value decreases as the temperature increases. This allows the electronic circuitry to accurately control the temperature of the engine. It can also be used in switching and protection circuits to absorb or limit current surge. It is also used in thermistors and other temperature sensors, as well as in active thermal protection devices.

When it comes to the working principle of the PNP200JR-52-0R12, it is composed of two metal leads and a substrate. A voltage is applied across the leads and the resistance of the metal-oxide material increases with temperature. As the temperature increases, the electric current passing through the resistor decreases, and the total resistance of the resistor increases. This amounts to a negative temperature coefficient, where the resistance is greater at higher temperatures.

In conclusion, the PNP200JR-52-0R12 Through Hole Resistor is a versatile electronic component composed of two metal leads, a substrate containing a metal oxide and a film. It operates on the principle of NTC ohmic resistance and is used in temperature control applications, automotive engines, switching and protection circuits, as well as active thermal protection devices. The temperature coefficient of the resistor decreases with temperature, allowing the electronic circuitry to accurately limit or regulate electrical current in a circuit.

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