The 3M3 Ohm (3.3M) 1/2W 5% Through Hole Resistor is a high-value resistor used in various electronic circuits that require precise resistance for controlling current, voltage regulation, and signal processing. With a nominal resistance of 3.3M ohms (3,300,000 ohms), a 1/2 watt (0.5W) power rating, and a 5% tolerance, this resistor is well-suited for moderate power applications. Its through-hole mounting design ensures secure integration into printed circuit boards (PCBs), making it ideal for both prototyping and large-scale production.

Key Specifications:

• Resistance: 3.3M ohms (3,300,000 ohms)

  • The 3.3M ohm resistor is used in circuits that require high resistance to control current flow, divide voltages, or filter signals. It is especially useful in applications requiring high impedance, such as sensor circuits, voltage dividers, and analog signal processing.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate 0.5 watts of electrical power without overheating, making it suitable for moderate power circuits where heat management is essential.

• Tolerance: ±5%

  • The 5% tolerance means that the actual resistance value can vary by 5% from the nominal value. For the 3.3M ohm resistor, the actual resistance can range from 3,135,000 ohms to 3,465,000 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design uses metal leads that are inserted through holes on a PCB and soldered to form a reliable electrical connection. This mounting type is commonly used in both prototyping and mass-production environments.

Applications:

• Current Limiting:
  The 3.3M ohm resistor is used to limit current flow in circuits to protect sensitive components such as LEDs, microcontrollers, and transistors from excessive current that could cause damage.

• Voltage Regulation:
  This resistor is often found in voltage regulation circuits, where it helps control the voltage and ensures it remains within safe limits, preventing potential damage to components from high voltage spikes.

• Voltage Divider Circuits:
  The 3.3M ohm resistor is used in voltage divider circuits, where it helps reduce high input voltages to safe, lower levels that can be processed by sensors, ADCs (analog-to-digital converters), and other devices.

• Signal Processing and Filtering:
  It is also widely used in signal processing and filtering applications, where it helps stabilize, condition, and filter electrical signals in various systems, including audio systems, RF circuits, and analog signal processing.

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 exact dimensions 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 on the PCB, where they are soldered to ensure a stable electrical connection.

Summary:
The 3M3 Ohm (3.3M) 1/2W 5% Through Hole Resistor is a reliable and versatile component used in a wide range of electronic applications. With a 3.3M 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. The through-hole mounting ensures a stable connection to PCBs, making it perfect for both prototyping and production. This resistor offers consistent performance in circuits that require high resistance values, ensuring the safety and efficiency of your electronic devices.