Description

A 91 Ohm 1/4W 5% Through Hole Resistor is a specific type of resistor with the following characteristics:

Resistance Value (91 Ohms):

This resistor has a resistance of 91 ohms, which provides a moderate level of resistance to the flow of electrical current. A 91-ohm resistor is typically used in circuits for current limiting, voltage division, and power control. It is suitable for low- to medium-power applications, such as limiting current in LED circuits, voltage divider networks, and filtering applications.

Power Rating (1/4W):

The 1/4 watt (0.25W) power rating indicates that this resistor can safely dissipate up to 0.25 watts of heat without damage. This power rating is ideal for low-power applications where the resistor will not dissipate excessive heat. The 1/4W rating ensures that the resistor remains within safe operating limits under typical current levels found in most circuits.

Tolerance (5%):

The 5% tolerance means that the actual resistance of the resistor can vary by ±5% from the nominal value of 91 ohms. Therefore, the actual resistance could range from 86.45 ohms to 95.55 ohms. This tolerance is typical for general-purpose resistors, providing a reasonable balance between accuracy and cost, and is acceptable in many circuits where precision is not critical.

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 mounting provides a strong and reliable mechanical and electrical connection, making it a good choice for both prototyping and final product designs where durability and ease of modification or replacement are required.

Applications:

• Current Limiting: A 91-ohm resistor is commonly used to limit current in circuits, especially when used in series with LEDs to protect the LED from excessive current that could cause damage.
• Voltage Division: It can be used in voltage divider circuits to reduce or split voltage, creating the desired voltage levels for other components.
• Impedance Matching: In audio, RF (radio frequency), or communications circuits, a 91-ohm resistor can be used for impedance matching to ensure efficient signal transfer and minimize signal reflections.
• Power Regulation: The resistor can be used in power regulation circuits to control current or voltage levels, ensuring that other sensitive components receive the appropriate power levels.

Summary:

The 91 Ohm 1/4W 5% Through Hole Resistor is a versatile, general-purpose resistor commonly used in current limiting, voltage division, impedance matching, and power regulation applications. The 1/4W power rating ensures it operates within safe thermal limits for low-power applications, while the 5% tolerance provides a reasonable degree of accuracy for typical circuit designs. The through-hole mounting design ensures durability and reliable connections, making it ideal for both prototyping and finalized circuit assemblies where long-term reliability and ease of modification are important.