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Differences and usages between CBB22 capacitors and MPK capacitors - News

Differences and usages between CBB22 capacitors and MPK capacitors

223 Published by at January 05,2019

Differences and usages between CBB22 capacitors and MPK capacitors
The main difference between safety capacitors and CBB22 capacitors is the way they are enveloped. The box structure of the safety capacitor is relatively better in flame retardancy and sealing, but the current CBB22 is basically impregnated, and the problem of sealing is solved. Intrinsic electrical performance structure Some manufacturers of CBB22 series use aluminum film production, and some use zinc aluminum film production. The production of zinc-aluminum film is similar to that of safety capacitors. It is characterized by its ability to withstand DC withstand voltage. The aluminum film structure product is characterized by lower loss than zinc-aluminum film and high-frequency AC withstand voltage, but the DC withstand voltage is inferior to zinc-aluminum film.
The difference in usage CBB22 cost is lower than MKP. In many places (almost all places), it can replace MKP in the electrical performance to meet the actual DC withstand voltage. How much power can the upper and lower 0.47UF output of the half bridge circuit? In the DC state, the power can be approximated as 0. The AC power is very simple to calculate P=U*U/XC=U*U/(1/2πfC) U is the effective value of the AC voltage, and XC is the capacitive reactance f for the AC. The frequency corresponding to the voltage U, C is the capacity. As for the power of various capacity capacitors 1) MKP capacitors and CBB22 capacitors: MKP capacitors are mainly used for EMI line filtering, CBB capacitors are mainly used for oscillation, coupling, RC and other circuits; CBB22 cost It is lower than MKP and can replace MKP under the condition of satisfying the actual DC withstand voltage.
2) The difference between MKP capacitor and CBB22 capacitor: The main difference lies in the outsourcing method. The box structure of the safety capacitor is relatively better in flame retardancy and sealing, but the current CBB22 is basically impregnated, and the problem of sealing is solved.
The nominal voltage rating of the MKP capacitor is 250/275VAC (x2), but the DC withstand voltage is 2000VDC2S; and the CBB22 capacitor withstand voltage is only 1.6 times the rated voltage.

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