Description

The 3E3 Ohm (3.3E) 1/2W 5% Through Hole Resistor is a widely used component in electronic circuits designed for controlling or limiting the flow of electrical current. It has a resistance value of 3.3 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance, making it ideal for a variety of applications in both low and moderate power circuits. The through-hole mounting ensures secure and reliable connections when integrated into printed circuit boards (PCBs).

Key Specifications:

• Resistance: 3.3 ohms (or 3.3E)

  • The 3.3 ohms resistance is commonly used in power regulation, current limiting, and voltage control applications. It provides a moderate level of resistance, making it ideal for circuits where efficient current flow management is essential.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate up to 1/2 watt (0.5W) of electrical power, which makes it suitable for low to medium power circuits where heat dissipation needs to be controlled.

• Tolerance: ±5%

  • The resistor has a 5% tolerance, meaning the actual resistance can vary by up to 5% from the nominal value. For this component, the resistance can range from 3.14 ohms to 3.46 ohms.

• Mounting Type: Through-hole

  • The through-hole design allows for easy insertion into holes on a PCB, where the leads are soldered to create a secure and reliable electrical connection. This mounting method is commonly used in prototyping as well as mass production assemblies.

Applications:

• Current Limiting:
  The 3.3 ohm resistor is often used to limit the current in circuits, preventing excessive current from flowing through sensitive components, thus ensuring their protection.

• Power Regulation:
  This resistor can be utilized in voltage regulation and power distribution circuits where maintaining stable voltage levels is critical to the operation of the system.

• Voltage Drop Control:
  The 3.3 ohm resistor is ideal for controlling and managing voltage drops across components, ensuring that circuits operate within their desired voltage range.

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

Physical Characteristics:

• Size:
  A 1/2 watt resistor typically measures around 1/4 inch (6.35 mm) in length and 1/8 inch (3.18 mm) in diameter, though these dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor features a cylindrical body with two metal leads that extend from either end. These leads are inserted into holes in the PCB and soldered in place to ensure a stable and reliable electrical connection.

Summary:
The 3E3 Ohm (3.3E) 1/2W 5% Through Hole Resistor is a reliable, general-purpose component designed for current limiting, voltage regulation, and power management in electronic circuits. With a 3.3 ohm resistance, 1/2 watt power rating, and 5% tolerance, it is well-suited for use in low to moderate power applications. The through-hole mounting design ensures durability and ease of integration into both prototyping and final production systems.