Description

The 1M2 Ohm (1.2M) 1/2W 5% Through Hole Resistor is a high-value resistor used in various electronic circuits that require precise current control, voltage regulation, and signal processing. With a nominal resistance of 1.2M ohms (1,200,000 ohms), a 1/2 watt (0.5W) power rating, and a 5% tolerance, this resistor is designed for moderate power applications. The through-hole mounting ensures secure integration into printed circuit boards (PCBs), making it ideal for both prototyping and production environments.

Key Specifications:

• Resistance: 1.2M ohms (1,200,000 ohms)

  • The 1.2M ohm resistor is commonly used in applications that require high resistance to control the flow of current, divide voltages, or stabilize signals. It's used in sensor circuits, voltage dividers, and other electronic applications where high resistance is needed to manage current or voltage.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate 0.5 watts of electrical power, making it suitable for circuits with moderate power requirements where heat dissipation is a concern.

• Tolerance: ±5%

  • The 5% tolerance means the actual resistance could vary by 5% from the nominal value. For the 1.2M ohm resistor, this means the actual resistance could range from 1,140,000 ohms to 1,260,000 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design features metal leads that are inserted into holes in the PCB, where they are soldered for a secure and stable electrical connection. This mounting type is ideal for both prototype and production environments.

Applications:

• Current Limiting:
  The 1.2M ohm resistor is often used in current-limiting circuits to protect sensitive components like LEDs, transistors, and microcontrollers from excessive current that could potentially cause damage.

• Voltage Regulation:
  This resistor is commonly found in voltage regulation circuits, helping to ensure stable voltage levels by controlling the current flow and preventing voltage spikes that could damage other components.

• Voltage Divider Circuits:
  The 1.2M ohm resistor is a key component in voltage divider circuits, helping to reduce high input voltages to lower levels that can be safely processed by sensors, analog-to-digital converters (ADCs), or other devices.

• Signal Processing and Filtering:
  This resistor is widely used in signal processing applications, including noise filtering, audio systems, and RF circuits. It helps stabilize and filter electrical signals, improving signal quality and reducing interference.

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. Exact dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor features a cylindrical body with metal leads extending from both ends. These leads are designed to pass through holes in the PCB and be soldered for a secure electrical connection.

Summary:

The 1M2 Ohm (1.2M) 1/2W 5% Through Hole Resistor is a high-quality, reliable component used in electronic circuits requiring high resistance values. With a 1.2M 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. The through-hole mounting design ensures a secure and stable connection to PCBs, making it suitable for both prototyping and production applications. This resistor provides dependable performance in various electronic circuits, ensuring consistent operation and protection for sensitive components.