Description

The 1E2 Ohm (1.2E) 1/2W 5% Through Hole Resistor is a widely used resistor in electronic circuits, offering a resistance value of 1.2 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance. Designed for through-hole mounting, it is ideal for general-purpose applications such as current sensing, voltage regulation, power distribution, and more.

Key Specifications:

• Resistance: 1.2 ohms (or 1.2E)

  • The 1.2 ohm resistance value is suitable for a variety of circuits where a low resistance is needed for current limiting, voltage drop management, or as part of power distribution networks.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate up to 1/2 watt (0.5W) of power without overheating, making it ideal for low-power applications where efficient energy dissipation is required.

• Tolerance: ±5%

  • The actual resistance can vary by up to 5% from the nominal value, meaning the resistance could range from 1.14 ohms to 1.26 ohms depending on manufacturing variations.

• Mounting Type: Through-hole

  • The through-hole mounting style is used for components that require insertion through holes in a printed circuit board (PCB). This design ensures a reliable, durable electrical connection, especially for power components.

Applications:

• Current Sensing:
  The 1.2 ohm resistance is frequently used in current sensing applications, where the small voltage drop across the resistor can be measured to determine the current flowing through a circuit.

• Power Regulation:
  It can be used in voltage regulation and current limiting applications where precise control of power flow is necessary. The 1/2 watt power rating ensures it can handle typical current and voltage levels in low-power circuits.

• Voltage Drop Management:
  The resistor's low resistance value makes it suitable for circuits where minimizing voltage loss across components is important, such as in power supplies or energy-efficient devices.

• General-Purpose Circuits:
  With its 1/2 watt power rating and 5% tolerance, this resistor is versatile for use in a range of general-purpose applications, including amplifiers, filtering, and as part of protective 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 exact sizes may vary by manufacturer.

• Construction:
  The resistor has a cylindrical body with two metal leads extending from each end, designed to be inserted into PCB holes and soldered in place for reliable, long-term operation.

Summary:
The 1E2 Ohm (1.2E) 1/2W 5% Through Hole Resistor is an essential component in many low-power electronic circuits, ideal for current sensing, power regulation, and voltage drop control. With a 1.2 ohm resistance, 1/2 watt power rating, and 5% tolerance, it offers reliable performance in general-purpose applications. The through-hole design ensures durability and ease of use in circuit assembly.