LR1F4K75

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A through-hole resistor, such as the LR1F4K75, is a resistor with a single terminal, or two terminals, that is mounted and electrically isolated from the PCB surface by small holes drilled in the board substrate. Typically, it is required to isolate a high voltage path from the PCB and also to minimize open-circuit failure on the component side (such as an Optocoupler or FET). The LR1F4K75 is a through-hole resistor that permits fine-tuned current flow and has a wide range of applications.

The LR1F4K75 is a type of through-hole resistor that consists of two metal contacts placed onto a ceramic-filled ceramic substrate. The contacts are connected to the substrate with a conductive silicone epoxy, which helps to ensure a secure connection. The ceramic substrate is filled with a resistive ceramic past, allowing for a higher resistance than other through-hole resistors. This feature allows the LR1F4K75 to be used in applications where high voltage is required.

Applications for the LR1F4K75 include timing circuits, voltage regulators, and power amplifiers. In timing circuits, the LR1F4K75 helps to control the timing of the electronics. In voltage regulators, the high resistance acts as a voltage divider to reduce the input voltage. In power amplifiers, the resistor helps to limit the amount of current through the amplifier and can be used to reduce distortion. As the LR1F4K75 can be used in a range of applications, it has become popular for both DIY and commercial projects.

The working principle of a through-hole resistor is rather simple. When current flowing through the two metal contacts on the ceramic-filled substrate, a voltage difference is created, which results in a voltage drop. The voltage drop is an indication of the resistance value of the resistor. The resistive value is determined by the amount of current passing through the contacts and the size of the ceramic substrate.

As the LR1F4K75 is a through-hole resistor, its working principle is similar to other types of through-hole resistors. However, the use of a ceramic-filled substrate and conductive silicone epoxy makes the LR1F4K75 more reliable than other through-hole resistors. The presence of the ceramic substrate also allows for higher resistance, making it suitable for a range of applications. Additionally, the LR1F4K75 is designed to be mounted securely on the PCB, ensuring minimal open-circuit failure on the component side.

Overall, the LR1F4K75 is a through-hole resistor that has a wide range of applications and is suitable for projects with higher resistance requirements. The resistor works on the same principle as other through-hole resistors, where current passing through the contacts on the substrate results in a voltage drop proportional to the amount of current. The use of ceramic substrate and conductive silicone epoxy make the LR1F4K75 more reliable and secure, while the high resistance makes it suitable for a range of different projects.

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