Description

The 474J 250V CBB21 is a high-quality metallized polypropylene film capacitor designed for applications requiring stable capacitance, low dielectric loss, and high reliability. It is commonly used in power electronics, filtering, coupling, and signal-processing circuits.

Key Specifications:

• Capacitance: 0.47µF (474 code)
• Voltage Rating: 250V DC
• Capacitance Tolerance: ±5% (J)
• Dielectric Material: Metallized Polypropylene Film
• Lead Spacing (Pitch): 15mm
• Operating Temperature Range: -40°C to +105°C
• Mounting Type: Through-Hole
• Construction Type: Axial/Radial, Box Type
• Self-Healing Property: Yes
• Dissipation Factor (DF): Low

Features & Benefits:

• High Stability: Provides excellent capacitance stability over time and temperature variations.
• Low ESR & ESL: Ensures minimal power losses and superior frequency response.
• Self-Healing Property: The metallized film structure allows for self-healing after minor breakdowns, improving long-term reliability.
• High Voltage Withstanding Capability: Can sustain high surge voltages, making it suitable for demanding power applications.
• Flame-Retardant Epoxy Coating: Offers enhanced safety and environmental protection.
• Long Operational Life: Designed for long-term reliability with minimal degradation.

Applications:

• Power Supply Filtering: Used in AC and DC circuits for ripple filtering and noise suppression.
• Snubber Circuits: Suitable for transient voltage suppression in power electronics.
• Coupling and Decoupling: Used in audio and RF circuits to block DC components while allowing AC signals to pass.
• Motor Run Capacitors: Provides phase shift and efficiency improvement in motor start applications.
• Pulse Circuits & Inverters: Ideal for high-frequency switching circuits such as SMPS and inverter systems.

Package & Dimensions:

• Lead Spacing: 15mm
• Form Factor: Box-type, compact design for easy PCB mounting
• Termination Style: Radial Leads

This CBB21 metallized film capacitor is an excellent choice for designers and engineers looking for a reliable, high-performance capacitor for power electronics, industrial control, and signal-processing circuits. Its robust design ensures long-term durability and consistent performance across various environmental conditions.