Description

A 27 Ohm 1/4W 5% Through Hole Resistor is a specific type of resistor with the following characteristics:

Resistance Value (27 Ohms):

This resistor has a resistance of 27 ohms, meaning it provides a moderate opposition to the flow of electrical current. A 27-ohm resistor is often used in circuits where you need to limit current, divide voltage, or regulate power. It’s a commonly used value in various low-power applications, such as in LED current limiting, signal processing, and low-power power supply circuits.

Power Rating (1/4W):

The 1/4 watt (0.25W) power rating means this resistor is designed to safely dissipate up to 0.25 watts of heat without being damaged. In typical low-power circuits, the current through the resistor will be low enough to ensure that the power dissipation stays well within the resistor’s limits, preventing overheating or failure.

Tolerance (5%):

The 5% tolerance means that the actual resistance of the resistor can vary by ±5% from its nominal value of 27 ohms. This gives the resistor a range of resistance values from 25.65 ohms to 28.35 ohms. The 5% tolerance is standard for general-purpose resistors and is typically acceptable for most applications that do not require high precision.

Through-Hole Mounting:

This resistor is designed for through-hole mounting, which means it has leads that pass through holes in a printed circuit board (PCB) and are soldered into place. Through-hole resistors provide a strong mechanical connection, making them suitable for durable and reliable designs, especially when components may need to be replaced or for applications that require ease of modification or repair.

Applications:

• Current Limiting: A 27-ohm resistor is often used to limit current in circuits, such as with LEDs or low-power components that could be damaged by excessive current.
• Voltage Division: It can be part of a voltage divider network, helping to create specific voltage levels needed by other parts of the circuit.
• Impedance Matching: In audio and RF (radio frequency) circuits, a 27-ohm resistor can be used for impedance matching, ensuring proper signal transfer and reducing signal reflections.
• Power Regulation: It may also be used in power regulation circuits, where controlling the flow of current or voltage is necessary to ensure the safe operation of other components.

Summary:

The 27 Ohm 1/4W 5% Through Hole Resistor is a general-purpose resistor commonly used in applications that require current limiting, voltage division, and power regulation in low-power circuits. The 1/4W power rating ensures it can safely dissipate heat under typical operating conditions, while the 5% tolerance offers acceptable accuracy for most general-purpose applications. The through-hole mounting style provides a durable and reliable connection, making it ideal for both prototyping and permanent circuit designs where strong mechanical connections and ease of replacement are important.