Description

The 120K Ohm 1/2W 5% Through Hole Resistor is a widely used passive electronic component designed for controlling current, voltage division, and filtering applications. Featuring a resistance of 120K ohms (120,000 ohms), a power rating of 1/2 watt (0.5W), and a 5% tolerance, this resistor is suitable for moderate power circuits. The through-hole mounting ensures a stable and secure connection on printed circuit boards (PCBs), making it a great choice for both prototype and production environments.

Key Specifications:

• Resistance: 120K ohms (120,000 ohms)

  • The 120K ohm resistor is typically used when higher resistance is needed to limit current or scale down voltage. It's a common choice in voltage divider circuits, signal processing, and filtering applications.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate 0.5 watts of electrical power, making it ideal for low-to-medium power applications where heat dissipation is not excessive.

• Tolerance: ±5%

  • The 5% tolerance means the actual resistance may vary by 5% from the nominal value. For the 120K ohm resistor, the resistance could range from 114,000 ohms to 126,000 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design allows the resistor's leads to be inserted through holes in the PCB and soldered, providing a secure electrical connection. This is the standard mounting method for both prototyping and production.

Applications:

• Current Limiting:
  The 120K ohm resistor is used in current-limiting circuits to ensure that the current flowing through sensitive components such as LEDs, transistors, or microcontrollers remains within safe limits.

• Voltage Regulation:
  It is often employed in voltage regulation circuits to maintain consistent voltage levels, ensuring the proper functioning of various electronic components.

• Voltage Divider Circuits:
  The 120K ohm resistor is frequently used in voltage divider circuits, where it helps scale down voltage levels to safer, lower levels suitable for sensors, analog-to-digital converters (ADC), and other measurement systems.

• Signal Processing and Filtering:
  This resistor plays an important role in signal processing applications, stabilizing and filtering signals in systems like audio amplifiers, RF circuits, and noise reduction systems.

Physical Characteristics:

• Size:
  The 1/2 watt resistor typically measures around 1/4 inch (6.35 mm) in length and 1/8 inch (3.18 mm) in diameter, although the dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor has a cylindrical body with metal leads extending from both ends. These leads pass through holes in the PCB and are soldered to ensure a reliable, stable electrical connection.

Summary:

The 120K Ohm 1/2W 5% Through Hole Resistor is a dependable and versatile component designed for a variety of electronic applications. With a 120K ohm resistance, 1/2 watt power rating, and 5% tolerance, this resistor is well-suited for moderate power circuits. The through-hole mounting design ensures easy and secure integration into PCBs, making it ideal for both prototyping and mass production. Whether used in current-limiting, voltage regulation, voltage division, or signal processing, this resistor offers consistent and reliable performance across various electronic systems.