Description

The 1K2 Ohm (1.2K) 1/2W 5% Through Hole Resistor is a standard electronic component commonly used in circuits that require current regulation, voltage division, or signal processing. With a resistance of 1.2K ohms (1,200 ohms), a power rating of 1/2 watt (0.5W), and a 5% tolerance, this resistor is perfect for moderate power applications. Its through-hole mounting design ensures it can be securely installed on printed circuit boards (PCBs), making it suitable for both prototype development and commercial production.

Key Specifications:

• Resistance: 1.2K ohms (1,200 ohms)

  • The 1.2K ohm resistor is often used in applications that require moderate current limiting, voltage regulation, or voltage divider networks. It is a common choice for applications in power control, filtering, and signal conditioning.

• Power Rating: 1/2 watt (0.5W)

  • The 1/2 watt power rating ensures that the resistor can dissipate up to 0.5 watts of electrical power without overheating, making it suitable for low-to-medium power circuits.

• Tolerance: ±5%

  • The 5% tolerance means that the actual resistance value can vary by 5% from the nominal value. For the 1.2K ohm resistor, the resistance could range between 1,140 ohms and 1,260 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design involves inserting the resistor’s leads into holes on the PCB, where they are soldered to form a stable and reliable electrical connection. This mounting type is ideal for both prototyping and large-scale production.

Applications:

• Current Limiting:
  The 1.2K ohm resistor is often used in circuits where limiting current is required, such as in LED circuits, where excessive current needs to be prevented from damaging sensitive components.

• Voltage Regulation:
  It is widely used in voltage regulation applications, where it helps to maintain stable voltage levels in various components by controlling current flow.

• Voltage Divider Circuits:
  The 1.2K ohm resistor is commonly used in voltage divider networks to scale down voltage levels in measurement systems or sensor applications, providing accurate voltage readings.

• Signal Processing and Filtering:
  This resistor plays a key role in signal conditioning, noise reduction, and filtering applications, particularly in audio circuits, RF systems, and sensor-based 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. These dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor features a cylindrical body with metal leads extending from each end. These leads pass through holes in the PCB and are soldered to form a solid, reliable electrical connection.

Summary:
The 1K2 Ohm (1.2K) 1/2W 5% Through Hole Resistor is a versatile component used in a variety of electronic applications such as current limiting, voltage regulation, signal processing, and voltage dividers. With its 1.2K ohm resistance, 1/2 watt power rating, and 5% tolerance, it is ideal for low-to-medium power circuits. The through-hole mounting ensures a secure connection to PCBs, making it suitable for both prototyping and commercial production. Whether used in LED circuits, voltage regulation systems, or signal processing, this resistor provides reliable and consistent performance across various electronic applications.