There are two common types of capacitors: direct insertion and patch, while direct insertion andPatchBoth are divided into two types: polarized and unpolarized.

Direct insertion

Non polar capacitor packaging is labeled with RAD, including RAD-0.1, RAD-0.2, RAD-0.3, etc. The 'e' number after it represents the spacing between the center holes of the solder pad, in inches

1in=1000mil 0.1in=100mil=0.254mm

The common ceramic capacitor (104) is packaged as RAD-0.1, which is represented as a non polar capacitor with a spacing of 0.254 (100mil) between the two pins

Polar capacitor packaging is marked with RB, including RD.2/. 4 RB.3/. 6 RB.4/. 8, etc,

The first number represents the spacing between the center holes of the pad, and the second number represents the peripheral size. Unit inches

Patch

Chip capacitorThe common ones are polar capacitors, tantalum Electrolytic capacitor andAluminum Electrolytic capacitor

The packaging size standards for non-polar patch capacitors are as follows:

The commonly used packaging options are 0805 and 0603, but due to volume limitations, the capacity of this type of non-polar chip capacitor is not very large, although there are other options

SMD capacitor: SMD tantalum Electrolytic capacitor and SMDAluminum Electrolytic capacitor(SMD Electrolytic capacitor)

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