The Precision Representation Method of Chip Capacitors 1

Capacitor Model Naming:

The naming conventions for capacitors vary widely across countries. Domestic capacitors follow a four-part naming system

Part 1: Represent names with letters, capacitors as C.diode

Part 2: Representing Materials with Letters.

Part Three: Classify with Numbers.

Part IV: Use numbers to indicate the sequence.

2) Capacitor marking methods:

(1) Direct labeling method: The model and specifications are directly marked on the outer shell with letters and numbers.

(2) Letter Code Method: Capacitance is represented by the regular combination of numbers and letter codes. Letter codes denote the unit of capacitance: P, N, u, m, F, etc., similar to the notation for resistors. The nominal tolerance is also represented the same way as resistors. For capacitors less than 10pF, the tolerance is indicated by letters: B—±0.1pF, C—±0.2pF, D—±0.5pF, F—±1pF.

(3) Color coding method: Similar to the representation of resistors, the unit is typically pF. The voltage rating of small electrolytic capacitors is also sometimes indicated by color coding, located near the root of the positive terminal lead. The meanings are as shown in the following table:  diode

Colors: black, brown, red, orange, yellow, green, blue, purple, gray

Voltage Ratings: 4V, 6.3V, 10V, 16V, 25V, 32V, 40V, 50V, 63V

(4) Marking Method for Imported Capacitors: Imported capacitors generally consist of six components.

Item 1: Represent categories with letters

Item 2: Use two digits to indicate its shape, structure, packaging method, lead start, and relationship with the axis.

Item 3: Temperature characteristics of temperature-compensated capacitors, which may be indicated by letters or colors, with their meanings as shown in the table below:

Serial Number Letter Color Temperature Coefficient Tolerance Letter Color Temperature Coefficient Tolerance  diode