105J/400V Polyester Capacitor

105J/400V Polyester Capacitor: An Overview

The 105J/400V Polyester Capacitor is a type of film capacitor known for its excellent electrical properties and reliability. This capacitor uses a polyester dielectric, which provides good stability, high insulation resistance, and low dielectric absorption. With a capacitance value of 1µF (105) and a voltage rating of 400V, it is suitable for various high-voltage applications.

Specifications

• Capacitance: 1µF (marked as 105)
• Voltage Rating: 400V
• Tolerance: ±5% (J)
• Dielectric Material: Polyester (Mylar)
• Lead Type: Radial
• Pitch: Typically around 22.5mm
• Operating Temperature Range: -55°C to +125°C

Features

• High Insulation Resistance: Ensures minimal leakage current.
• Low Dielectric Absorption: Provides better performance in high-frequency applications.
• Stable Capacitance: Maintains capacitance value over a wide range of temperatures and voltages.
• Good Reliability: Durable construction ensures long-term performance.
• Compact Size: Fits well into various electronic designs.
• High Voltage Tolerance: Suitable for applications requiring higher voltage ratings.

Applications

• Power Supply Filtering: Used to filter out noise and smooth the output in power supply circuits.
• DC Blocking: Prevents DC components from passing through while allowing AC signals.
• Coupling and Decoupling: Used in signal coupling and decoupling applications in audio and RF circuits.
• Timing Circuits: Utilized in RC (resistor-capacitor) timing circuits for generating delays or setting oscillator frequencies.
• Snubber Circuits: Protects switching components by absorbing voltage spikes.
• High-Voltage Applications: Suitable for use in circuits where high voltage handling is required.
• Energy Storage: Provides temporary storage of energy in various electronic devices.

Additional Notes

• Mounting: Radial leads make it easy to mount on PCBs, and the typical pitch allows for secure placement.
• Environmental Stability: Polyester capacitors are known for their environmental stability, ensuring performance across a range of conditions.
• Polarity: Polyester capacitors are non-polarized, meaning they can be installed in any direction in the circuit.
• Frequency Response: Suitable for applications up to several MHz, providing good high-frequency performance.

Typical Use in Circuits

• Power Supply Circuits: Used to stabilize and smooth voltage in both linear and switch-mode power supplies.
• Audio Circuits: Employed in audio signal processing for coupling and decoupling applications.
• Motor Run and Start Circuits: Used in AC motor circuits to improve efficiency and performance.
• Lighting Ballasts: Found in the ballast circuits of fluorescent and other types of lighting.
• General-Purpose Use: Versatile capacitor suitable for a wide range of electronic circuits, offering reliable performance.

Overall, the 105J/400V Polyester Capacitor is a versatile and reliable component ideal for high-voltage applications requiring stable capacitance and good insulation properties.

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