Description

The 2E2 Ohm (2.2E) 1/2W 5% Through Hole Resistor is a commonly used component in electronic circuits designed to limit or control the flow of electric current. With a resistance value of 2.2 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance, this resistor is suitable for a wide range of general-purpose applications, including voltage regulation, current sensing, and power management. The through-hole mounting style ensures a secure and reliable connection when used in printed circuit boards (PCBs).

Key Specifications:

• Resistance: 2.2 ohms (or 2.2E)

  • The 2.2 ohms resistance value is commonly used in circuits that need moderate current regulation or power dissipation. It is typically used in power management, current-limiting, or voltage drop applications.

• Power Rating: 1/2 watt (0.5W)

  • The 1/2 watt (0.5W) power rating indicates that this resistor can safely dissipate up to 0.5 watts of electrical power without overheating, making it suitable for low to moderate power applications.

• Tolerance: ±5%

  • The resistor has a 5% tolerance, meaning the actual resistance can vary by up to 5% from the nominal value. In practice, this means the resistance could range from 2.09 ohms to 2.31 ohms depending on manufacturing tolerances.

• Mounting Type: Through-hole

  • Designed for through-hole mounting, the resistor has metal leads that pass through holes in the PCB and are soldered to ensure a strong mechanical and electrical connection. This mounting method is commonly used for both prototyping and finished product assemblies.

Applications:

• Current Limiting:
  The 2.2 ohm resistor is often used to limit current flow in circuits, ensuring that other components do not receive excessive current that could cause damage or instability.

• Voltage Regulation:
  It can be used in voltage regulation circuits, where its resistance helps control voltage levels to ensure stable operation of other circuit components.

• Power Management:
  This resistor can help in managing the distribution of power across different parts of a circuit, reducing excess voltage and protecting sensitive components.

• General-Purpose Circuits:
  With its 1/2 watt power rating and 5% tolerance, this resistor is ideal for a wide range of general-purpose applications, including signal processing, amplification, and filtering circuits.

Physical Characteristics:

• Size:
  A 1/2 watt resistor typically measures approximately 1/4 inch (6.35 mm) in length and 1/8 inch (3.18 mm) in diameter, though 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 inserted into holes on a PCB and soldered to create a secure connection, making it durable for use in both prototype and production boards.

Summary:
The 2E2 Ohm (2.2E) 1/2W 5% Through Hole Resistor is an essential component for various low-power electronic applications that require resistance for current limiting, voltage regulation, and power management. Its 2.2 ohm resistance, 1/2 watt power rating, and 5% tolerance make it suitable for a wide range of general-purpose circuit designs. The through-hole mounting ensures a strong, reliable connection to PCBs, making it perfect for both prototyping and commercial electronic products.