High Voltage SMD Capacitor

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High voltage SMD capacitor 1206 1KV

High voltage SMD capacitor 1206 1KV

High-voltage SMD capacitor materials: COG NPO X7R X5R Y5V
High-voltage SMD capacitor series:
0402, 0603, 0805, 1206, 1210, 1808, 1812, 2220, 2225;
SMD capacitor capacity:
0.2p-100uF 10V-5000V 0.2Pf--10Uf full range;
A = ±0.05pF, B = ±0.1pF, C = ±0.25pF, D = ±0.5pF, F = ±1%, G = ±2%, J = ±5%, K = ±10%, M = ±20%, Z = -20% + 80%

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High voltage SMD capacitor details

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High voltage chip capacitors

Product parameter

High-voltage SMD capacitor material: COG NPO X7R X5R Y5V

NPO (COG) SMD capacitor are classified as Class I high-frequency capacitor. Their capacitance is stable and does not change with changes in ambient temperature, voltage and time, and is suitable for high-frequency electronic circuits.

The SMD capacitor made of X5R/X7R are classified as type II low-frequency capacitor, and their capacitance is relatively stable, and they are relatively sensitive to changes in ambient temperature, voltage and time.

SMD capacitor made of Y5V material belong to Type II low-frequency capacitor, and their capacitance varies greatly by the environment, temperature, voltage and time.

High-voltage SMD capacitor series: 0402, 0603, 0805, 1206, 1210, 1808, 1812, 2220, 2225;

SMD capacitor capacity: 0.2p-100uF 10V-5000V 0.2Pf-10Uf full series;

Deviation: A=±0.05pF, B=±0.1pF, C=±0.25pF, D=±0.5pF, F=±1%, G=±2%, J=±5%, K=±10%, M=±20%, Z=-20%+80%

common problem

As the capacitance value of MLCC continues to increase, the equipment used to measure capacitance in the past may not be able to provide accurate measurement of large capacitance components. The meter cannot drive enough AC voltage to measure the full capacitance. The following discussion contains answers to frequently asked questions and measurement tips for high-volume measurement of MLCC.

Q1. Why is the measured value smaller when measuring some large capacitance MLCCs?

A1. When measuring capacitor, it is important to understand the difference between the true value, the effective value and the indicated value. The true value is the value of the capacitor when it is an ideal component without parasitic inductance and resistance. The effective 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 measurement accuracy.

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

Q2. What voltage and frequency should be suitable for capacitor?

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

Capacitor AC voltage frequency

C ≤ 1000pF1.0 ± 0.2 Vrms1MHz ± 10%
1000pF < C ≤ 10μF1.0 ± 0.2 Vrms1kHz ± 10%
C > 10μF0.5 ± 0.2 Vrms120 Hz ± 10%

Physical anatomy of high voltage chip capacitors

▲  Physical anatomy diagram

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