Electrolytic capacitors for surface mounting (SMD). Code marking. Reference data
Encyclopedia of radio electronics and electrical engineering / Reference materials
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The following coding principles are used by well-known companies such as PANASONIC, HITACHI, etc. There are three main coding methods.
A. The code contains two or three characters (letters or numbers) indicating the operating voltage and rated capacity. Moreover, the letters indicate the voltage and capacity, and the number indicates the multiplier. In the case of a two-digit designation, the operating voltage code is not indicated.
В. The code contains four characters (letters and numbers) indicating the nominal capacity and operating voltage. The letter at the beginning indicates the operating voltage, the subsequent characters indicate the capacitance in picofarads (pF), and the last digit indicates the number of zeros.
There are 2 options for capacitance coding:
a) the first two digits indicate the face value in pF, the third - the number of zeros;
b) the capacitance is indicated in microfarads, the p sign functions as a decimal point.
Below are examples of marking capacitors with a capacity of 4.7 microfarads and an operating voltage of 10 V.
С. If the case size allows, then the code is located in two lines: the capacitance rating is indicated on the top line, and the operating voltage is indicated on the second line. Capacitance can be specified directly in microfarads (µF) or 8 picofarads (pF) with a number of zeros (see method B). For example, the first line - 15, the second line - 35V means that the capacitor has a capacitance of 15 uF and an operating voltage of 35 V.
Publication: cxem.net
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