The method of distinguishing positive and negative electrodes of chip electrolytic capacitors

The method of distinguishing positive and negative electrodes of

Electrolytic capacitors are polar capacitors and cannot accept reverse voltage. When installing, they must be installed with the correct polarity. Before use, the positive and negative electrodes of the electrolytic capacitor must be correctly distinguished.

The correct method of positive and negative electrodes of electrolytic capacitors:

1. Identification method of positive and negative electrodes of bolt-type electrolytic capacitors

Bolt-type aluminum electrolytic capacitors have clear positive and negative grade marks on the casing, the positive pole is represented by "+", and the negative pole is represented by "-". Most screw capacitors will have "+" and "-" symbols engraved next to the terminals on the cover plate.

2. Distinguishing method of positive and negative electrodes of aluminum electrolytic capacitors

At present, all manufacturers of aluminum electrolytic capacitors with solder tabs use the "negative sign", that is, the welding pin corresponding to the "-" sign of the sleeve is the negative electrode.

The positive and negative electrodes of the electrolytic capacitors are also distinguished on the cover plate. Most of them are marked by “embossing” of the negative electrode, and some electrolytic capacitor manufacturers directly print the “+” and “-” signs on the rivets.

3. Identification method of positive and negative electrodes of electrolytic capacitors with lead structure

The lead structure electrolytic capacitor also adopts the "negative mark", that is, the lead corresponding to the casing "-" mark is the negative electrode. It can be identified by the length of the lead, the long lead is the positive electrode, and the short lead is the negative electrode.

4. Identification method of positive and negative electrodes of chip aluminum electrolytic capacitors

Chip aluminum electrolytic capacitors, also known as chip aluminum electrolytic capacitors, have no casing, and are printed with relevant information such as capacity, voltage, positive and negative electrodes on the bottom of the aluminum shell.