Description

The "E82 Ohm (0.82E) 2W 5% Through Hole Resistor" is an electrical component used to limit current, dissipate power, or control voltage in various circuits. Here’s a detailed breakdown of its specifications and typical applications:

Specifications:

• Resistance Value: 0.82 ohms (0.82E)
• Power Rating: 2 watts (W)
• Tolerance: ±5% (The actual resistance could vary within 5% above or below the nominal 0.82 ohms.)
• Mounting Type: Through hole (This means the resistor has leads that are inserted through holes in a printed circuit board (PCB) and soldered on the opposite side.)
• Package Type: Typically cylindrical or rectangular, designed for through-hole mounting.

Key Features:

• 0.82 Ohms: This is a relatively low resistance value, making it suitable for applications where high current needs to be limited or where a small voltage drop is required. Common in power applications.
• 2W Power Rating: The resistor can safely dissipate up to 2 watts of electrical power as heat. This makes it suitable for circuits where higher currents and corresponding power dissipation are expected compared to lower-power resistors (e.g., 1/4W or 1/2W).
• 5% Tolerance: The resistance can vary by ±5% from the nominal value of 0.82 ohms. While not ultra-precise, this level of tolerance is generally sufficient for most applications that do not require extreme precision.

Typical Applications:

• Power Circuits: Ideal for power electronics where power dissipation is a factor. These could include power supplies, current-limiting resistors, or voltage dividers in power regulation circuits.
• Current Limiting: Used in applications where controlling or limiting current is necessary, such as in LED circuits, motor control systems, or battery-powered devices.
• High-Current Circuits: Given the 2W power rating, this resistor can be used in circuits with higher current demands, such as audio amplifiers, automotive electronics, or power distribution systems.
• Speaker Protection: In audio applications, it can help protect speakers from excessive current by limiting the amount of current flowing through the circuit.
• Motor Control: In circuits designed for controlling motors or inductive loads, where limiting the current is crucial to prevent component damage or excessive heat buildup.