Description

The E33 Ohm (0.33E) 1/2W 5% Through Hole Resistor is a widely used resistor in electronic circuits, offering a resistance of 0.33 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance. This resistor is designed for through-hole mounting, making it suitable for a variety of general-purpose applications in both prototype and production electronic devices.

Key Specifications:

• Resistance: 0.33 ohms (or 0.33E)

  • The resistor provides a low resistance value, ideal for applications such as current sensing, low-power circuit designs, and minimal voltage drop across components.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate up to 0.5 watts of electrical power without overheating or degrading in performance, making it appropriate for low-power applications.

• Tolerance: ±5%

  • The actual resistance value may vary by up to 5% from the nominal value of 0.33 ohms. For example, the resistance can range between 0.3135 ohms and 0.3465 ohms.

• Mounting Type: Through-hole

  • The resistor is designed for through-hole mounting, with two metal leads that pass through holes in a printed circuit board (PCB) and are soldered to the opposite side, ensuring secure and reliable electrical connections.

Applications:

• Current Sensing:
  The low resistance value of 0.33 ohms is ideal for use in current sensing applications, where a small voltage drop across the resistor is measured to determine current flow in a circuit.

• Power Regulation:
  This resistor is often used in power supply designs, voltage regulation circuits, and current limiting applications to ensure stable operation with minimal power loss.

• Voltage Drop Minimization:
  Used in circuits where minimal voltage drop is necessary to maintain power efficiency, such as in battery-powered systems or high-efficiency power supply designs.

• General-Purpose Use:
  Its 1/2 watt power rating and 5% tolerance make it suitable for general-purpose use in a wide variety of electronic circuits.

Physical Characteristics:

• Size:
  Typically, a 1/2 watt resistor will have a standard size, usually around 1/4 inch (6.35 mm) in length and about 1/8 inch (3.18 mm) in diameter, depending on the specific design and manufacturer.

• Construction:
  The resistor features a cylindrical body with two metal leads extending from each end. These leads are designed to be inserted into a PCB, where they are soldered to form a secure electrical connection.

Summary:
The E33 Ohm (0.33E) 1/2W 5% Through Hole Resistor is a versatile, low-resistance component commonly used in applications requiring minimal voltage drop, such as current sensing and power regulation. It offers a 1/2 watt power rating and a 5% tolerance, making it ideal for low-power, non-precision applications. With its through-hole mounting design, this resistor ensures a durable, easy-to-install solution for electronic circuits in a variety of devices.