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Advantages and Disadvantages of Silver Mica Capacitors


Silver mica capacitor is made of tin foil and mica sheet as medium, laminated and die-cast in bakelite powder, its shape is mostly square. It uses natural mica as the medium between capacitor poles, so its voltage withstanding performance is quite good. Electrode plates made of metal foil or silver sprayed on mica sheets After laminating the plates with mica layer by layer, they are then die-cast in bake lite powder or sealed in epoxy resin.Its characteristics are low dielectric loss, high insulation resistance and low temperature coefficient, which are suitable for big current and medium and high frequency circuits.

Because of the excellent electrical and mechanical properties of mica materials, the inductance and leakage loss of mica capacitors are very small. The mica capacitors have the advantages of wide voltage range, high reliability, stable performance and high capacity accuracy. Especially suitable for high-frequency oscillation circuit, high-precision operational amplifier, filter circuit and other occasions.

Advantages and disadvantages of Silver Mica Capacitor


1. Low loss.
GTCAP silver mica capacitor’s tgδ≤4x10-3(1KHz)

2.Good heat resistance.

GTCAP CVG series silver mica capacitor can work under -55°C~+200°C.

3. Good performance at high frequency circuit.

Because of its low intrinsic inductance, silver mica capacitors can work at higher frequency. Experiments show that the max working frequency of GTCAP silver capacitors can reach 1MHz.

4.High accuracy.

Capacitance tolerance ±3%, ±5%, ±10%


1.Volume is big relative to its capacity

2.Prices are relatively high than other capacitors

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