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Non-Inductive Structure CBB21 225J 400V Metallized Polyester Film
Capacitor Flame Retardant Epoxy Powder Coating
What are the characteristics and functions of CBB21 metal film
capacitors?
1. High-frequency resistance, and high-frequency loss is very
small, much smaller than CL metallized polyester film capacitors,
high reliability, good stability, and long life.
2. The internal temperature rise is small, the high temperature
resistance is 105°C, and the high temperature resistance
performance is good. (It should be noted that there are many CBB21
capacitors on the market that cut corners. They use poor materials
and can only withstand high temperatures of 85°C)
3. High insulation resistance, it has good self-healing properties,
of course, this is also a common feature of most film capacitors.
4. The exterior is encapsulated with epoxy resin. If you want to
use it in some harsh environments, you can also choose MPB
capacitors. Its internal core is the same as that of CBB21
capacitors, but the exterior is sealed with a plastic shell.
Usage:
Suitable for DC and lowpulse occasions, forthe amplifier, TV, communications, power supply, LED drivers and other requirements of the small size of the circuit.
Specification:
Climatic Category | 40/085/21 |
Rated Voltage | 63V , 100V , 250V,400V,630V |
Capacitance Range | 0.0010μF~1.0μF |
Voltage Proof | 1.6 UR |
Insulation Resistance | ≥3 000MΩ, CR≤0.33μF |
≥1 000S, CR>0.33μF | |
(20℃, 1min) | |
Disspation Factor | ≤0.008(20℃, 1kHz) |
Outline Drawing:
FAQ
Q;Materials of products?
A;A metallized film for A + grade capacitors. Besides we accept
customization
Q;Samples are free?
A:yes!
Q;Quality Control?
A;Quality is first,We has passed ISO9001and ROHS REACH
certification,As an important part of quality management, quality
control is the key to proving the effectiveness of quality
certification.
What are the advantages of CBB21 as a filter capacitor?
Whether the filter capacitor should be CBB21 capacitor or
electrolytic capacitor, it is easy to choose. Electrolytic
capacitor must be used to filter DC wave, but electrolytic
capacitor must be used to filter AC wave, even if it is cheap, you
need to use CBB21 at this time capacitance.
The filtering principle of the CBB21 capacitor is actually not
complicated. The filtering is the process of charging and
discharging. The function of the filter capacitor is simply to make
the filtered output voltage a stable DC voltage. Its working
principle is that the capacitor is charged when the rectified
voltage is higher than the capacitor voltage, and the capacitor is
discharged when the rectified voltage is lower than the capacitor
voltage. During the charging and discharging process , so that the
output voltage is basically stable.
Many capacitors and inductors have the function of filtering,
because they have energy storage functions, and filtering is
realized by using their functions. The filter circuit requires the
energy storage capacitor to have a large capacitance. Therefore,
most filter circuits use electrolytic capacitors. However, in the
AC circuit, CBB21 must be used as the filter capacitor, even if the
cost of the electrolytic capacitor is lower, it cannot be used.
Capacitors with different capacities have different filtering
effects. Generally, capacitors of about 10PF are used to filter out
high-frequency interference signals, and capacitors of about 0.1UF
are used to filter out low-frequency ripple interference. When
selecting the capacity of the filter capacitor, generally a large
capacitor filters low-frequency waves, and a small capacitor
filters high-frequency waves. Only by choosing the most appropriate
capacitance value can the best filtering effect be achieved.