High quality environmentally friendly ceramic chip capacitor

Q1: When measuring some large capacitor MLCC, why is the measured value smaller?

A1: When measuring a capacitor, it is important to understand the difference between the true value, the effective value, and the expressed value. The true value is the value of the capacitor when it is ideal for components without parasitic inductance and resistance. The effect value is the sum of the actual (real part) and vector (imaginary part) of the component, which is related to the frequency. The indicated value is the value displayed by the measuring device and is subject to the measurement accuracy.

When measuring a large capacitance value, the voltage level (represented value) set on the meter is not necessarily equal to the voltage level (effect value) transmitted in the DUT (Device Under Test).

Q2: How much voltage and frequency should the capacitor be suitable for?

A2: MLCC capacitor >10μF is considered as a large capacity tantalum capacitor. Improvements in manufacturing technology have allowed ceramic capacitor manufacturers to produce large-capacitance tantalum capacitors close to tantalum and aluminum electrolytic capacitors. The test specifications for these "large capacity" MLCCs are tested under the same conditions as tantalum capacitors. The measured voltage should be 0.5Vrms and the measurement frequency should be 120Hz. The table below summarizes and describes the test conditions.

The utility model has the advantages of small volume, convenient SMT processing, good solderability, and greatly solves the problem that the circuit board has small space compared with other conventional plug-in capacitors, and is a representative product of high-tech products.

Long life, international standard for the life of the product is ten years.

Good stability, reflected in a stable requirement for solid capacitor capacity and withstand voltage.

Green environmental protection requirements, because the solid capacitor is made of ceramics, it has achieved environmental protection and energy saving.

It has good thermal insulation properties. Because it is made of ceramics, it is a natural material for thermal insulation.