Description

The 820 Ohm 1/2W 5% Through Hole Resistor is a commonly used electronic component that provides a resistance of 820 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance. This resistor is ideal for controlling current, voltage division, and signal conditioning in a variety of circuits. Its through-hole mounting design ensures secure attachment to printed circuit boards (PCBs), making it suitable for both prototyping and mass production.

Key Specifications:

• Resistance: 820 ohms

  • The 820 ohm resistance value is widely used in applications that require current limiting, voltage regulation, or as part of voltage divider circuits. It provides moderate resistance suitable for low-to-medium power circuits.

• Power Rating: 1/2 watt (0.5W)

  • With a 1/2 watt power rating, this resistor can safely dissipate up to 0.5 watts of power without overheating, making it suitable for circuits with moderate power requirements.

• Tolerance: ±5%

  • The 5% tolerance indicates that the actual resistance can vary by up to 5% from the nominal value. For the 820 ohm resistor, the actual resistance could range from 779 ohms to 861 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting type ensures the resistor’s leads are inserted into holes on the PCB and soldered into place, providing a strong and reliable electrical connection. This type is ideal for both prototype and commercial applications.

Applications:

• Current Limiting:
  The 820 ohm resistor is commonly used in circuits that require current limiting, such as LED circuits, to protect components from excessive current that could cause damage.

• Voltage Regulation:
  It is often employed in voltage regulation circuits, where it helps to control the current flow and maintain a stable voltage level across various components.

• Power Distribution:
  The 820 ohm resistor is useful in power distribution systems, helping to regulate current and voltage levels to ensure proper operation without overloading or damaging components.

• Signal Processing and Filtering:
  The resistor is frequently used in signal conditioning applications to reduce noise, stabilize voltage levels, and smooth electrical signals in circuits such as audio amplifiers, RF systems, and sensor circuits.

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. Dimensions may vary slightly depending on the manufacturer.

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

Summary:

The 820 Ohm 1/2W 5% Through Hole Resistor is a reliable and versatile component for current limiting, voltage regulation, and signal processing in a wide range of electronic circuits. With its 820 ohm resistance, 1/2 watt power rating, and 5% tolerance, it is ideal for use in applications such as LED circuits, voltage regulation systems, power distribution, and signal conditioning. The through-hole mounting design ensures a stable connection to PCBs, making it suitable for both prototyping and commercial production. Whether used for current limiting, voltage regulation, or signal filtering, this resistor provides consistent performance in various electronic systems.