Description

The 1K8 Ohm (1.8K) 1/2W 5% Through Hole Resistor is a reliable electronic component designed for various circuit applications, including current limiting, voltage division, and signal conditioning. With a resistance of 1.8K ohms (1,800 ohms), a power rating of 1/2 watt (0.5W), and a 5% tolerance, this resistor is ideal for use in moderate power circuits. The through-hole mounting design makes it easy to integrate into printed circuit boards (PCBs), making it suitable for both prototypes and commercial production.

Key Specifications:

• Resistance: 1.8K ohms (1,800 ohms)

  • The 1.8K ohm resistor is used in circuits that require a moderate amount of resistance to control current flow. It is ideal for applications like voltage dividers, current-limiting circuits, and filtering applications.

• Power Rating: 1/2 watt (0.5W)

  • This 1/2 watt power rating allows the resistor to safely dissipate up to 0.5 watts of electrical power without overheating. This makes it suitable for circuits with low to moderate power requirements.

• Tolerance: ±5%

  • The 5% tolerance means that the actual resistance value may vary by 5% from the nominal value. For the 1.8K ohm resistor, the actual resistance could range from 1,710 ohms to 1,890 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design allows the resistor’s leads to pass through holes in a PCB, where they are soldered to ensure a secure electrical connection. This type of mounting is ideal for both prototyping and high-volume manufacturing.

Applications:

• Current Limiting:
  The 1.8K ohm resistor is used in applications where limiting current is essential, such as protecting LEDs and other sensitive components from excessive current.

• Voltage Regulation:
  It is frequently used in voltage regulation circuits, where it helps maintain stable voltage levels and controls current flow to various components in the system.

• Voltage Divider Circuits:
  The 1.8K ohm resistor is commonly used in voltage divider configurations to scale down voltage levels for sensors, ADCs (Analog-to-Digital Converters), or measurement systems.

• Signal Processing and Filtering:
  The resistor is used in signal conditioning applications, such as filtering unwanted frequencies in audio circuits, RF systems, and other signal processing systems to ensure a stable output.

Physical Characteristics:

• Size:
  A 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 slightly vary 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 form a reliable and secure electrical connection.

Summary:
The 1K8 Ohm (1.8K) 1/2W 5% Through Hole Resistor is a versatile and reliable component used in a variety of electronic applications, such as current limiting, voltage regulation, signal processing, and voltage dividers. With its 1.8K ohm resistance, 1/2 watt power rating, and 5% tolerance, it is suitable for low-to-medium power circuits. The through-hole mounting design ensures a secure connection to PCBs, making it an ideal choice for both prototyping and production environments. Whether used in LED circuits, voltage regulation systems, or signal conditioning applications, this resistor provides consistent performance and reliability in a wide range of electronic systems.