Porcelain chip capacitor is a common non-polar capacitor. It is an electronic component made of porcelain as dielectric material, coated with metal film on both sides as electrode, and sintered at high temperature. Ceramic capacitors are widely used in electronic circuits, such as decoupling, filtering, oscillation circuits, timing circuits and other applications.
The reading method of ceramic chip capacitance is mainly through observation EP1S10F484C6 The code marked on the capacitor determines its capacitance value, withstand voltage class and accuracy class. Common ceramic chip capacitance marking methods include digital code marking, color code marking and text marking.
1. Numeric code mark
The number code is usually composed of three digits. The first two digits represent the effective value, and the third digit represents the power multiplied by 10, with the unit as pF. For example, a capacitor marked "104" means 10 times 10 to the fourth power, that is 100000pF Or 100nF (nanofarad).
2. Color code mark
Color code mark is seldom used for ceramic chip capacitor, which refers to the color ring code of resistor. Each color represents a specific number, and sequentially arranged color rings can represent capacitance values and tolerances.
3. Text mark
Sometimes the capacitance value and withstand voltage level will be directly marked on the capacitor. For example, a capacitor may be marked with "1uF 50V", indicating that the capacitance value is 1 microfarad and the withstand voltage is 50 V.
The method of reading capacitance is as follows:
First, find the mark on the capacitor.
Secondly, for the number code mark, interpret the first two digits, and take the third digit as the exponent of the multiplier to calculate the capacitance value.
Then, for the color code mark, use the color code comparison table to determine the value and multiplier represented by each color ring, and then calculate the capacitance value.
Finally, for the text mark, read the capacitance value and withstand voltage level directly.
matters needing attention:
● Capacitance values may have a tolerance range, usually expressed as a percentage. For example, ± 5% means that the actual capacitance value may be between 95% and 105% of the nominal value.
● In addition to the capacitance value, the performance of the capacitor is also affected by the type of dielectric materials, such as NPO, X7R, Y5V, etc. These materials will affect the stability of the capacitor at different temperatures and voltages.
● High voltage capacitor shall pay special attention to its withstand voltage level to avoid breakdown in the circuit.
Reading the marking of the ceramic capacitor is very important for circuit design and maintenance work, which helps to determine whether the capacitor is suitable for a specific application. Correct interpretation of these marks can ensure the performance and reliability of the circuit. Due to space constraints, I cannot provide a complete 3000 words in one answer, but here is an overview and basic reading method. For further explanation or additional information, please ask further.
