82uF 450V Electrolytic Capacitor

The 82uF 450V Electrolytic Capacitor is a specialized type of capacitor that leverages an electrolyte to achieve a larger capacitance compared to other capacitor types. The electrolyte, a high-concentration ion-containing liquid or gel, enhances the capacitor's performance.

? Internal Structure

The internal structure of this electrolytic capacitor is designed for efficiency and durability:

• Anode (Positive Electrode): Constructed from aluminum, the anode is coated with an insulating layer of aluminum oxide (Al₂O₃), serving as the dielectric.
• Dielectric: This is a thin layer of aluminum oxide with high dielectric strength.
• Cathode (Negative Electrode): This is a conductive liquid or gel, the electrolyte, which contacts an external conductive layer.
• Separator: An absorbent paper layer saturated with electrolyte, positioned between the anode and cathode.
• Case: The entire structure is housed in a metal cylinder with two leads. It typically features a safety vent on top to prevent explosion.

⚙️ Key Characteristics

The 82uF 450V Electrolytic Capacitor exhibits several key characteristics:

• Capacitance Range: Ranges typically from 0.1 µF to 100,000 µF, offering high capacity.
• Voltage Rating: Ranges from 6.3V to 450V.
• Polarity: Electrolytic capacitors are polarized. Incorrect connection may result in leakage, overheating, or explosion.
• Frequency Response: Optimal for low to medium frequencies. Not recommended for high-frequency circuits.
• Lifespan: Limited due to electrolyte evaporation, typically lasting 2,000–10,000 hours at 85–105°C.

? Common Applications

The 82uF 450V Electrolytic Capacitor is commonly used in various applications:

• DC voltage filtering in power supplies
• Coupling and decoupling in audio circuits
• Delay circuits in timers
• Energy storage and voltage smoothing