Description

A 4.7 Ohm 1/4W 5% Through Hole Resistor is a specific type of resistor with the following characteristics:

Resistance Value (4.7 Ohms):

This resistor has a resistance of 4.7 ohms, meaning it offers moderate opposition to current flow in a circuit. A 4.7-ohm resistor is commonly used for applications that require current limiting, voltage division, or specific impedance matching in low to medium-power circuits. It is often found in circuits that handle audio, power supplies, and signal processing.

Power Rating (1/4W):

The 1/4 watt (0.25W) power rating means that the resistor can safely dissipate up to 0.25 watts of heat without being damaged. Given that this resistor is relatively low in resistance, it will only dissipate power when there is a sufficient current flow, but the power rating ensures it can handle typical heat loads in standard, low-power applications.

Tolerance (5%):

The 5% tolerance means that the actual resistance value can vary by as much as ±5% from the nominal 4.7 ohms. This range of variation is typical for general-purpose resistors and means that the resistor will generally be within the range of 4.465 ohms to 4.935 ohms. While the variation may seem small, it's important to note that this tolerance is usually acceptable in most common applications.

Through-Hole Mounting:

This resistor is designed for through-hole mounting, meaning it has leads that pass through holes in a printed circuit board (PCB) and are soldered on the opposite side. Through-hole resistors are robust and suitable for applications where durability and ease of repair or modification are important. The through-hole design ensures strong mechanical and electrical connections.

Applications:

• Current Limiting: A 4.7-ohm resistor is frequently used to limit the current in circuits with components like LEDs, transistors, or sensors, ensuring they operate within safe current limits.
• Voltage Division: It can be part of a voltage divider circuit, helping to create specific voltage levels needed by other components in the circuit.
• Audio Circuits: Due to its moderate resistance value, it is commonly used in audio applications, such as speaker crossovers or impedance matching.
• Signal Processing: The resistor might also be used in signal processing circuits where controlling impedance and current flow is necessary.

Summary:

The 4.7 Ohm 1/4W 5% Through Hole Resistor is used primarily in circuits where moderate current limiting, voltage division, or impedance matching is required. The 1/4W power rating ensures it can safely handle the heat dissipation in low-power circuits, while the 5% tolerance offers a reasonable level of accuracy for general-purpose applications. Through-hole mounting makes it ideal for robust, durable, and easily replaceable connections on a printed circuit board.