How To Identify Capacitor Polarity. The polarity of surface mount capacitors is marked by a white or black line at one of the ends of the device. The following prefixes are the modern convention.
This is particularly important because it is necessary to be able to check the polarity and to have a marking to identify the polarity of the capacitor. Capacitor Identification Capacitor Marking Review. Positive marking of PCB and components.
This linebar indicates the positive terminal of the capacitors as shown in the figure above.
Sometimes you can look to the length of the leads as an indication of polarity. Electrolytic capacitors have domestic production the findings of which are arranged radially or axially to determine the polarity of the way the plus sign located on the body. This linebar indicates the positive terminal of the capacitors as shown in the figure above. This is important because hooking one up backwards can be dangerous.
