Frequently asked questions about ceramic capacitors

Ceramic capacitors are believed to be familiar to everyone. Ceramic capacitors are used as loop capacitors and pad capacitors in high-stability oscillator circuits for filtering, decoupling, and signal coupling. The editor of this article wants to talk to you about the common problems of ceramic capacitors. I hope the answers to this article can help you!

1) Why is the ceramic capacitor easily broken by the pulse voltage?

A: All capacitors are easily broken down if they are over-pressed, except for the special capacitors such as X/Y safety capacitors.

2) What is the capacity of the ceramic capacitor 221K?

A: 221PF = 0.22NF = 0.00022UF. The three-digit capacitance is marked by the first two digits, the latter one is a few 0, 1 is a 0, which means 220, (if 224 is 4 0, meaning 220000), k The unit that is not the capacitor is also called the accuracy, k is the positive and negative ten percent of the capacity range, and the capacitance of the unit that is not marked in the capacitor world is a small unit (PF).

3) What is the appearance of the ceramic capacitor after repeated breakdown?

Answer: After repeated breakdown, the ceramic body should have burnt marks on the surface, the burnt marks are round, the middle is silvery gray, and the outer ring is black.