![]() The positive electrode of the PCB pad is marked by a "+" symbol. The positive electrode of the PCB pad is marked by a color strip. Also, the negative lead for leaded 'wet' e-caps is usually shorter. Therefore, the opposite side is the positive electrode. Polarized capacitors have polarity markings, usually '' (minus) sign on the side of the negative electrode for electrolytic capacitors or a stripe or '+' (plus) sign, see Polarity marking. The negative electrode of the aluminum electrolytic capacitor is marked by a color strip or block. The positive electrode of the PCB pad is marked by a bevel.Īluminum electrolytic capacitor polarity identificationįor aluminum electrolytic capacitors, the polarity is marked by: ![]() The positive electrodes of the PCB and tantalum capacitor are both marked by a "+" symbol. The positive electrodes of the PCB and tantalum capacitor are both marked by a color strip. Capacitor polarity refers to the orientation of positive and negative terminals in a capacitor. For tantalum capacitors, the polarity is marked by: SMD tantalum capacitors are polarized components. SMD tantalum capacitor polarity identification Their positive electrode should be placed in the same direction as the PCB pad's positive electrode. Remember to check the markings on the capacitor to be tested. ![]() An electrolytic capacitor for a speaker crossover network would be like an identical pair of them connected in series opposition. Positive voltage will go to the anode, and negative goes to the cathode of the capacitor. Reversal of polarity or application of AC would impair the dielectric layer and cause irreparable / catastrophic damage to the capacitor. Tantalum capacitors and aluminum electrolytic capacitors have polarity. If this capacitor has a positive and negative lead, it is a polarized capacitors (electrolytic capacitors). Ceramic capacitors are non-polarized components.
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