Description

This is a through-hole resistor with a resistance value of 0.22 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance. It is commonly used in applications requiring low resistance and current control.

Key Specifications:

• Resistance: 0.22 ohms (or 0.22E)
  A low-value resistor, ideal for current sensing, power regulation, and minimizing voltage drop in circuits.

• Power Rating: 1/2 watt (0.5W)
  Can safely dissipate up to 0.5 watts of power without overheating or failing.

• Tolerance: ±5%
  The actual resistance can vary by up to 5% from the nominal value (0.22 ohms). For example, actual resistance can range from 0.209 ohms to 0.231 ohms.

• Mounting Type: Through-hole
  Designed for insertion into holes on a printed circuit board (PCB), where the leads are soldered on the opposite side. Ideal for prototyping and traditional circuit assemblies.

Applications:

• Current Sensing: Used in low-resistance sensing applications where voltage drop across the resistor is measured to calculate current flow.

• Power Supplies: Suitable for power regulation and protection circuits where a low resistance value is needed.

• Voltage Drop Minimization: Ideal for applications that require minimal resistance to avoid significant voltage loss, such as in high-efficiency power systems.

• Low-Power Circuits: The 1/2W power rating makes it appropriate for circuits that operate with low power consumption.

Physical Characteristics:

• Size: Typically, a 1/2W resistor will be around 1/4 inch (6.35 mm) in length and about 1/8 inch (3.18 mm) in diameter, depending on the specific design.

• Construction: A cylindrical body with two metal leads for insertion into the PCB. The leads are soldered to the opposite side to create a reliable electrical connection.

Summary:
The E22 Ohm (0.22E) 1/2W 5% Through Hole Resistor is a reliable, general-purpose resistor, ideal for low-power, low-resistance applications such as current sensing, power supply regulation, and voltage drop reduction. Its 1/2W power rating and ±5% tolerance make it suitable for non-precision applications where moderate performance is acceptable. Its through-hole design makes it a great choice for traditional and prototype circuits.