Description

The 2A394J 100V Polyester Film Capacitor is a high-quality electronic component designed for general-purpose applications requiring stable capacitance, low loss, and high reliability. This capacitor has a capacitance of 0.39µF (394) with a ±5% tolerance (J) and operates at a maximum voltage rating of 100V DC.

Construction & Material:

It is constructed using polyester film (Mylar) as the dielectric, offering excellent electrical characteristics such as low dielectric absorption and high insulation resistance. The capacitor features a metalized polyester film structure, ensuring self-healing properties, which enhance durability and reliability in long-term applications.

Electrical & Performance Characteristics:

• Capacitance Value: 0.39µF (microfarads)
• Tolerance: ±5% (J)
• Rated Voltage: 100V DC
• Dielectric Material: Polyester (PET)
• Insulation Resistance: High insulation resistance for improved performance
• Dissipation Factor: Low dissipation factor, ensuring minimal energy loss

Physical & Mounting Features:

• Package Type: Through-hole (Radial Leads)
• Lead Spacing: Typically 5mm or 10mm (depending on manufacturer specifications)
• Body Shape: Rectangular or oval, with epoxy resin coating for enhanced protection
• Lead Material: Tinned copper leads for easy soldering

Applications:

The 2A394J 100V polyester film capacitor is widely used in various electronic circuits, including:

• Coupling and Decoupling – Provides AC signal coupling and DC isolation.
• Filtering Applications – Used in power supplies and audio circuits for noise suppression.
• Timing Circuits – Works with resistors to create RC timing circuits.
• Snubber Circuits – Helps in transient voltage suppression in switching applications.
• General-Purpose Electronics – Suitable for consumer electronics, industrial equipment, and more.

Advantages:

• High Stability – Minimal capacitance variation over temperature and time.
• Self-Healing Property – Enhances reliability by preventing dielectric breakdown.
• Low Leakage Current – Ensures efficient energy storage and signal integrity.
• Good Frequency Response – Effective for high-frequency AC applications.

This capacitor is an excellent choice for engineers and hobbyists looking for a durable, efficient, and high-performance capacitor for various electronic applications.