Description

The 4M7 Ohm (4.7M) 1/2W 5% Through Hole Resistor is a high-value resistor commonly used in electronic circuits requiring precise resistance to control current, divide voltages, or filter signals. With a nominal resistance of 4.7M ohms (4,700,000 ohms), a 1/2 watt (0.5W) power rating, and a 5% tolerance, this resistor is ideal for moderate power applications. The through-hole mounting design ensures secure integration into printed circuit boards (PCBs), making it suitable for both prototyping and mass production environments.

Key Specifications:

• Resistance: 4.7M ohms (4,700,000 ohms)

  • The 4.7M ohm resistor is designed for circuits that require high resistance to limit current, divide voltages, or stabilize electrical signals. It is widely used in voltage divider circuits, sensor applications, and high-impedance circuits.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can dissipate up to 0.5 watts of electrical power safely without causing overheating, making it suitable for moderate power applications where heat dissipation is essential.

• Tolerance: ±5%

  • The 5% tolerance means that the actual resistance can vary by 5% from the nominal value. For the 4.7M ohm resistor, this means the actual resistance could range from 4,465,000 ohms to 4,935,000 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design uses metal leads that are inserted into holes on the PCB and soldered, ensuring a secure electrical connection. This type of resistor is commonly used in both prototype and large-scale production circuits.

Applications:

• Current Limiting:
  The 4.7M ohm resistor is used to limit the flow of current, protecting sensitive components such as LEDs, transistors, and microcontrollers from excessive current, which could cause damage or failure.

• Voltage Regulation:
  This resistor is also used in voltage regulation circuits, where it helps maintain stable voltage levels and prevents harmful voltage spikes that could affect other components in the circuit.

• Voltage Divider Circuits:
  The 4.7M ohm resistor is commonly used in voltage divider circuits, where it helps reduce high input voltages to a lower, safe level. It is often paired with other resistors to produce a desired output voltage that can be processed by sensors, analog-to-digital converters (ADCs), and other devices.

• Signal Processing and Filtering:
  This resistor is useful in signal processing applications, such as noise filtering and signal conditioning. It plays a role in stabilizing and processing electrical signals in various systems, including audio, RF (radio frequency) 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, although the exact dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor has a cylindrical body with metal leads extending from both ends. These leads are designed to pass through holes on the PCB, where they are soldered to form a stable and reliable electrical connection.

Summary:
The 4M7 Ohm (4.7M) 1/2W 5% Through Hole Resistor is a reliable and versatile component used in a variety of electronic applications that require high resistance. With a 4.7M ohm resistance, 1/2 watt power rating, and 5% tolerance, it is ideal for use in current-limiting, voltage regulation, voltage divider circuits, and signal processing. The through-hole mounting ensures a secure connection to PCBs, making it perfect for both prototyping and large-scale manufacturing. This resistor offers stable and dependable performance in circuits requiring high resistance, ensuring the efficiency and safety of your electronic devices.