Chip capacitorThe parameters included in the naming include the size of the chip capacitor, the material used to make this type of chip capacitor, the required accuracy, voltage, capacity, terminal requirements, and packaging requirements. The parameters required for ordering chip capacitors generally include size, required accuracy, voltage requirements, capacity values, and the required brand.

Naming of chip capacitors:

0805CG102J500NT 0805: Refers to the size of the chip capacitance. It is expressed in inches. 08 means the length is 0.08 inch, 05 means the width is 0.05 inch. CG: Refers to the material required for this capacitance. This material is generally suitable for capacitance less than 10000 PF. 102: Refers to the capacitance. The first two digits are Significant figures, and the second two digits indicate how many zeros 102=10 × 100, that is,=1000PF J: it is required that the capacitance value of the capacitor should reach an error accuracy of 5%, the dielectric material and error accuracy should be matched 500: it is required that the withstand voltage of the capacitor should be 50V, and the first two digits of 500 are Significant figures, followed by how many zeros. N: Refers to the material of the end cap. Nowadays, the general end cap refers to three layers of electrodes (silver/copper layer), nickel, and tin. T: refers to the packaging method, T represents ribbon packaging, and the color of the SMT capacitor. The common ones are a slightly lighter yellow than cardboard boxes and a cyan gray, which may cause different differences in the specific production process. The SMT capacitor is not printed on it, This is related to his manufacturing process (the chip capacitor is made by high-temperature sintering, so it cannot be printed on its surface), while the chip resistor is made by silk screen printing (which can print markings).

Chip capacitors include medium and high voltage chip capacitors and ordinary chip capacitors. The series voltages include 6.3V, 10V, 16V, 25V, 50V, 100V, 200V, 500V, 1000V, 2000V, 3000V, and 4000V. There are two dimensional representations for chip capacitors: one is in inches, and the other is in millimeters. The models of the chip capacitor series include 0201, 0402, 0603, 0805, 1206, 1210, 1812, 2010, 2225, etc. The materials for chip capacitors are generally divided into three types: NPO, X7R, and Y5V NPO. This material has the most stable electrical performance and hardly changes with temperature, voltage, and time. It is suitable for high-frequency circuits with low loss and stability requirements.

The capacity accuracy is about 5%, but this material can only be used for smaller capacities. Conventional materials below 100PF and 100PF -1000PF can also be produced, but the price is higher. X7R material has poor stability compared to NPO, but the capacity is higher than NPO material, with a capacity accuracy of about 10%. Capacitors with Y5V dielectric have poor stability, with a capacity deviation of about 20%, and are sensitive to temperature and voltage. However, this material can achieve high capacity and is relatively inexpensive, making it suitable for circuits with little temperature change.
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