Description

The 1M Ohm 1/2W 5% Through Hole Resistor is a widely used component in electronic circuits, designed for applications requiring high resistance values. With a nominal resistance of 1M ohm (1,000,000 ohms), a 1/2 watt (0.5W) power rating, and a 5% tolerance, this resistor is ideal for moderate power circuits. The through-hole mounting design ensures secure attachment to printed circuit boards (PCBs), making it suitable for both prototype development and mass production.

Key Specifications:

• Resistance: 1M ohms (1,000,000 ohms)

  • The 1M ohm resistor is used in circuits where high resistance values are needed to control the flow of current, divide voltages, or stabilize signals. It's commonly found in sensor circuits, amplifiers, and signal processing applications.

• Power Rating: 1/2 watt (0.5W)

  • With a power rating of 0.5W, this resistor can safely dissipate moderate amounts of electrical power without excessive heat buildup. It is suitable for circuits with moderate power requirements.

• Tolerance: ±5%

  • The 5% tolerance indicates that the actual resistance may vary by 5% from the nominal value. For the 1M ohm resistor, this means the actual resistance could range from 950,000 ohms to 1,050,000 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design features metal leads that are inserted into holes on the PCB and soldered for secure and stable electrical connections, making it ideal for both prototyping and production use.

Applications:

• Current Limiting:
  The 1M ohm resistor is used in current-limiting applications to protect sensitive components like LEDs, microcontrollers, and transistors from excessive current.

• Voltage Regulation:
  This resistor helps maintain stable voltage levels in voltage regulation circuits, preventing harmful voltage spikes and ensuring consistent operation of sensitive components.

• Voltage Divider Circuits:
  In voltage divider circuits, the 1M ohm resistor helps reduce high input voltages to lower, more manageable levels for safe processing by sensors, ADCs (analog-to-digital converters), and other electronics.

• Signal Processing and Filtering:
  The 1M ohm resistor is used in signal processing, filtering, and noise reduction applications, helping to stabilize and clean electrical signals in audio systems, RF circuits, and other sensitive electronics.

Physical Characteristics:

• Size:
  The 1/2 watt resistor typically measures about 1/4 inch (6.35 mm) in length and 1/8 inch (3.18 mm) in diameter, though the exact size may vary 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 secure electrical connections.

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