Description

The 820K Ohm 1/2W 5% Through Hole Resistor is an essential component used in electronic circuits where high resistance values are needed. With a resistance of 820K ohms (820,000 ohms), a 1/2 watt (0.5W) power rating, and a 5% tolerance, this resistor is suitable for moderate power applications. The through-hole mounting style ensures a secure connection to printed circuit boards (PCBs), making it ideal for both prototype designs and production assemblies.

Key Specifications:

• Resistance: 820K ohms (820,000 ohms)

  • The 820K ohm resistor is used in circuits that require controlling current flow, voltage division, or signal processing with high resistance values. It is commonly used in sensor circuits, voltage dividers, and other applications requiring stable resistance values.

• Power Rating: 1/2 watt (0.5W)

  • This resistor has a 0.5W power rating, allowing it to safely handle moderate amounts of electrical power without excessive heat buildup, making it suitable for circuits with moderate power requirements.

• Tolerance: ±5%

  • The 5% tolerance indicates that the actual resistance value may vary by 5% from the nominal value. For the 820K ohm resistor, the actual resistance could range from 779,000 ohms to 861,000 ohms.

• Mounting Type: Through-hole

  • The through-hole design ensures that the resistor’s metal leads are inserted through holes in the PCB and soldered for a stable, secure electrical connection. This mounting style is ideal for use in both prototype and production circuits.

Applications:

• Current Limiting:
  The 820K ohm resistor is often used in current-limiting circuits to protect sensitive components such as LEDs, microcontrollers, and transistors from excessive current that could cause damage.

• Voltage Regulation:
  This resistor is useful in voltage regulation circuits where it helps maintain consistent voltage levels by controlling the current flowing through the circuit, preventing voltage spikes.

• Voltage Divider Circuits:
  The 820K ohm resistor is frequently used in voltage divider circuits to scale down high input voltages to lower, more manageable levels that can be safely processed by sensors, ADCs (analog-to-digital converters), and other electronic components.

• Signal Processing and Filtering:
  This resistor is commonly used in signal processing and filtering applications, such as noise filtering, audio amplification, and RF circuits, where it helps stabilize and filter electrical signals.

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 features a cylindrical body with metal leads extending from both ends. These leads pass through holes in the PCB, where they are soldered to create a secure electrical connection.

Summary:
The 820K Ohm 1/2W 5% Through Hole Resistor is a versatile and reliable component designed for applications requiring high resistance values. With a 820K ohm resistance, 1/2 watt power rating, and 5% tolerance, it is ideal for use in voltage regulation, current limiting, voltage divider circuits, and signal processing applications. Its through-hole mounting design ensures a stable and secure connection to PCBs, making it suitable for both prototyping and production. This resistor delivers consistent, reliable performance in various electronic circuits.