Large volume high voltage SMD capacitor

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, 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;

High voltage 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 are the measured values 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, and 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 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 large capacitance 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 ≤ 1000pF 1.0 ± 0.2 Vrms 1MHz ± 10%
1000pF 10μF 0.5 ± 0.2 Vrms 120 Hz ± 10%
Physical anatomy of high voltage chip capacitors

▲ Physical anatomy diagram



Applicable industry



Applicable to LED lighting related products, power products, household appliances,
computer side office products, large industrial equipment controllers, network
equipment, communication products, digital products, automotive electronics,
security monitoring systems and other fields.

Minimum Order: 20000 bags

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