There are many kinds of capacitors, which can be divided into non-polar variable capacitors, non-polar fixed capacitors, polar capacitors, etc. In terms of materials, they can be divided into: CBB capacitors (polyethylene), polyester capacitors, ceramic capacitors, mica capacitors, duolite capacitors, electrolytic capacitors, tantalum capacitors, etc.
Non-inductive CBB capacitance
Two layers of polypropylene plastic and two layers of foil are intermingled and bundled together.
Non-inductive, high frequency characteristics, small size, not suitable for large capacity, high price, poor heat resistance.
Two layers of polyethylene plastic and two layers of foil are intermingled and then bound together.
Inductive, high frequency characteristics, small size, not suitable for large capacity, high price, poor heat resistance.
A thin piece of porcelain with silver film on both sides.
Small size, high pressure resistance, low price, high frequency (there is a high frequency capacitor), fragile, low capacity
The mica sheet is coated with two metal films
Easy production, low technical content, large volume, small capacity
The volume is smaller than the CBB, and the others are sensitive to the CBB
Two pieces of aluminum tape and two layers of insulating film are overlapped with each other. After being bundled, they are immersed in an electrolyte (a synthetic solution containing acid) with high capacity and poor high-frequency characteristics.
Tantalum metal is used as the positive electrode, and the electrolyte is sprayed with metal as the negative electrode.
Good stability, large capacity, high frequency characteristics, high cost.