Description

The 474J 450V Metallized Film Capacitor (CBB21) is a high-performance, non-polarized capacitor designed for use in AC and DC circuits where high stability, low loss, and high insulation resistance are required. This capacitor has a capacitance value of 0.47µF (474 code), a voltage rating of 450V, and features a through-hole radial lead design with a lead pitch of 15mm, making it suitable for PCB mounting in a wide range of electronic applications.

Key Features:

• Capacitance Value: 0.47µF (474 code)
• Voltage Rating: 450V DC
• Capacitor Type: Metallized Polypropylene Film Capacitor (CBB21)
• Tolerance: ±5% (J)
• Lead Pitch: 15mm
• Dielectric Material: Polypropylene film
• Low Dissipation Factor: Ensures minimal energy loss and high efficiency
• High Insulation Resistance: Reduces leakage current and enhances circuit reliability
• Self-Healing Property: Provides excellent long-term stability and prevents breakdowns due to minor dielectric faults
• Through-Hole Mounting: Suitable for soldering on PCB boards for reliable connections

Applications:

• Power Supply Filtering: Used in DC-Link circuits, snubber circuits, and EMI suppression
• Audio Circuits: Ideal for crossover networks in loudspeakers due to low distortion properties
• Pulse Circuits: Used in switching power supplies, inverter circuits, and pulse forming networks
• Motor Run Applications: Suitable for motor run and fan speed control circuits
• Lighting Systems: Used in LED drivers, ballasts, and energy-saving lamp circuits
• High-Frequency Applications: Ideal for RF filtering and signal coupling in communication systems

Construction and Reliability:

The CBB21 capacitor is constructed using high-quality metallized polypropylene film as the dielectric, which provides high voltage resistance and low equivalent series resistance (ESR). The capacitor is encapsulated in a flame-retardant plastic case, ensuring durability and resistance to environmental factors such as temperature variations and humidity. Its self-healing properties allow it to recover from minor dielectric breakdowns, making it a highly reliable component for long-term use.

Technical Specifications:

• Capacitance: 0.47µF
• Voltage Rating: 450V DC
• Capacitor Type: Metallized Polypropylene Film (CBB21)
• Tolerance: ±5% (J)
• Lead Pitch: 15mm
• Operating Temperature Range: -40°C to +105°C
• Dissipation Factor (DF): Low, ensuring minimal power loss
• Insulation Resistance: High, preventing leakage currents

This 474J 450V Metallized Film Capacitor (CBB21, 15mm pitch) is a versatile and durable electronic component widely used in power electronics, signal processing, and AC/DC circuits. Its high performance, self-healing capabilities, and low ESR make it an excellent choice for demanding electronic applications.