Polarity marking for non-solid and solid aluminum electrolytic capacitors
1. Aluminum electrolytic capacitors with non-solid electrolyte have a polarity marking at the cathode (minus) side

800px-Polarity-wet-Al-Elcaps

2. Aluminum electrolytic capacitors with solid electrolyte have a polarity marking at the anode (plus) side

800px-Polarity-rectangular-chips

21001059565936_333

21001059565936_857

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