
Product Description
CBB21/CBB22 polypropylene film capacitors are high - performance electronic components. They are fabricated with a polypropylene film as the dielectric material, which is metallized on both sides to form electrodes. These capacitors are encapsulated in a plastic case, providing mechanical protection and electrical insulation. They are designed to offer stable electrical performance and reliable operation in a wide range of applications.
Features
- Low Dielectric Loss: The polypropylene film dielectric has a very low loss tangent, minimizing energy dissipation and heat generation during operation. This results in high - efficiency energy transfer and better performance in circuits.
- High Insulation Resistance: With excellent insulation properties, these capacitors have extremely high insulation resistance, reducing leakage current and ensuring long - term reliability.
- Self - Healing Property: In case of a dielectric breakdown, the self - healing mechanism of the polypropylene film can automatically repair the damaged area, preventing permanent failure and enhancing the capacitor's lifespan.
- High Dielectric Strength: They can withstand relatively high voltages without breakdown, making them suitable for use in high - voltage circuits.
- Stable Capacitance: The capacitance value remains stable over a wide range of temperatures, frequencies, and applied voltages, ensuring consistent performance in different operating conditions.
Applications
- Power Supply Filtering: Used in power supply circuits to filter out ripple and noise, providing a clean and stable DC voltage.
- Coupling and Decoupling: In amplifier circuits and other signal - processing circuits, they are used to couple AC signals between stages and decouple DC bias, ensuring proper signal transmission.
- Resonant Circuits: Ideal for use in resonant circuits such as LC resonant circuits in radio frequency (RF) applications, where they help to determine the resonant frequency and improve circuit selectivity.
- Snubber Circuits: Employed in power electronics to suppress voltage spikes and protect other components from high - voltage transients.
Shape Diagram
Product Parameters
Parameter |
Description |
Capacitance Range |
0.001μF - 10μF |
Voltage Rating |
100V, 250V, 400V, 630V, 1000V. |
Capacitance Tolerance |
±5% (J), ±10% (K), ±20% (M) |
Operating Temperature Range |
- 40°C to +85°C or - 55°C to +105°C |
Dissipation Factor |
≤0.1% at 1kHz and 20°C |
Insulation Resistance |
≥10000MΩ |
Application Fields
- Consumer Electronics: Found in televisions, audio systems, computers, and other household electronic devices for power management and signal processing.
- Power Electronics: Used in switching power supplies, inverters, and motor drives to improve power quality and protect components.
- Industrial Automation: Applied in industrial control systems, programmable logic controllers (PLCs), and robotic equipment for signal conditioning and power filtering.
- Telecommunications: Employed in communication equipment such as mobile phones, base stations, and routers to ensure stable signal transmission and power supply.
Product Description
CBB21/CBB22 polypropylene film capacitors are high - performance electronic components. They are fabricated with a polypropylene film as the dielectric material, which is metallized on both sides to form electrodes. These capacitors are encapsulated in a plastic case, providing mechanical protection and electrical insulation. They are designed to offer stable electrical performance and reliable operation in a wide range of applications.
Features
- Low Dielectric Loss: The polypropylene film dielectric has a very low loss tangent, minimizing energy dissipation and heat generation during operation. This results in high - efficiency energy transfer and better performance in circuits.
- High Insulation Resistance: With excellent insulation properties, these capacitors have extremely high insulation resistance, reducing leakage current and ensuring long - term reliability.
- Self - Healing Property: In case of a dielectric breakdown, the self - healing mechanism of the polypropylene film can automatically repair the damaged area, preventing permanent failure and enhancing the capacitor's lifespan.
- High Dielectric Strength: They can withstand relatively high voltages without breakdown, making them suitable for use in high - voltage circuits.
- Stable Capacitance: The capacitance value remains stable over a wide range of temperatures, frequencies, and applied voltages, ensuring consistent performance in different operating conditions.
Applications
- Power Supply Filtering: Used in power supply circuits to filter out ripple and noise, providing a clean and stable DC voltage.
- Coupling and Decoupling: In amplifier circuits and other signal - processing circuits, they are used to couple AC signals between stages and decouple DC bias, ensuring proper signal transmission.
- Resonant Circuits: Ideal for use in resonant circuits such as LC resonant circuits in radio frequency (RF) applications, where they help to determine the resonant frequency and improve circuit selectivity.
- Snubber Circuits: Employed in power electronics to suppress voltage spikes and protect other components from high - voltage transients.
Shape Diagram

Product Parameters
Parameter |
Description |
Capacitance Range |
0.001μF - 10μF |
Voltage Rating |
100V, 250V, 400V, 630V, 1000V. |
Capacitance Tolerance |
±5% (J), ±10% (K), ±20% (M) |
Operating Temperature Range |
- 40°C to +85°C or - 55°C to +105°C |
Dissipation Factor |
≤0.1% at 1kHz and 20°C |
Insulation Resistance |
≥10000MΩ |
Application Fields
- Consumer Electronics: Found in televisions, audio systems, computers, and other household electronic devices for power management and signal processing.
- Power Electronics: Used in switching power supplies, inverters, and motor drives to improve power quality and protect components.
- Industrial Automation: Applied in industrial control systems, programmable logic controllers (PLCs), and robotic equipment for signal conditioning and power filtering.
- Telecommunications: Employed in communication equipment such as mobile phones, base stations, and routers to ensure stable signal transmission and power supply.