PSP17AJB-3K9

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When you’re working on a device, it helps to understand how the parts within it work. Through hole resistors, like the PSP17AJB-3K9, are designed to help suit the device to all kinds of applications. This article will look at the application fields for these resistors and the working principle behind them.

Application Fields

Through hole resistors have certain features that make them ideal to be used in a number of different application fields. These resistors possess the ability to absorb and maintain large amounts of current. This means that they can be used in power supply systems that handle high wattage devices and components. This makes them especially useful in audio and other amplified systems, since they can handle the elevated temperatures and decrease their dissipation rate when exposed to extreme climates or unforgiving environments.

The good heat resistance of these resistors also makes them suitable for use in the safety systems in various machinery. Through hole resistors can be used in EMI/RFI filtering and also in noise suppression applications. As part of the vibration control system, they are ideal for mitigating shock events from happening. They are also used on vehicles with electronic control systems, providing protection against voltage fluctuation or shortages.

Working Principle

At the most basic level, through hole resistors are passive components that reduce the amount of voltage supplied to a circuit or component. The amount of resistance they offer along an electrical current is measured using the ohmic scale. The basic working principle of these types of resistors is based on the voltage drop theory.

When a current passes through a resistive device, a voltage drop will be established across each terminal. This voltage drop will be directly proportional to the amount of current running through the component. By controlling the amount of electric voltage available across a resistor, the current running through it can be adjusted to a desired range.

To protect internal resistors, most manufacturers use coated resistors. The coating, whether ceramic or polymeric resin is designed to prevent moisture or heat from passing through the resistors and interfering with their performance. This protects the through hole resistors from extreme temperatures or chemicar attack.

In addition, through hole resistors are designed with two distinct leads, allowing them to dissipate heat more efficiently and safely. The leads absorb the heat of the resistor, which is why they tend to be thicker than those of SMD or surface mount resistors.

The PSP17AJB-3K9 through hole resistors are, as with all resistors, designed to offer resistance along the current flow in a circuit. Their heat protection and ability to withstand pressure make them well suited for use in commercial, aerospace, automotive and industrial applications.

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