80V12000UF Electrolytic Capacitor: Essential Power Component for PLC Industrial Automation Systems

What this delivery is: two brand-new 80 V 12,000 µF snap-in aluminum electrolytic capacitors, CD293 series, 85 °C rated, received 2026-02-06, 0.5 kg for the pair. The cans are the tall-snap-in format — roughly the size of a shot glass — with the twin solder pins under the base and the printed band running twice around the sleeve: the oval RM logo, the rating line 80v 12000µF, the series and temperature CD293 85°C, and the application note FOR AUDIO. A blank white stripe down one side marks the negative terminal. Note for readers coming from the listing title: the print on the can says FOR AUDIO, and that is the duty this series is built for — amplifier power supplies first, though an 80 V can of this size works anywhere a high-ripple 63–80 V rail needs smoothing.

What the marking tells you

CD293 is the classic Chinese snap-in series for audio and general-purpose power supplies: large capacitance, low ESR for the class, and a vented phenolic base disc that doubles as the batch carrier. The 85 °C rating is the standard grade for this series — fine for amplifiers and bench supplies that run cool, and worth remembering if you were comparing against the 105 °C industrial cans. Two pins per can make the mount: the snap-in leads seat through 2 mm slots in the PCB and hold the can upright through soldering. One honesty note from the record: the cans arrived loose on foam, no retail box, so we describe them as we received them — new parts, unmounted, never installed.

Where a 12,000 µF / 80 V can belongs

This is amplifier arithmetic: 80 V rails and 12,000 µF per side is the reservoir size a 200-to-300-watt class AB amplifier wants, which is why the series carries the FOR AUDIO print. The same can also serves tube-amp and lab-supply builds that sit at 56–63 V DC after rectification — the 80 V rating leaves standard headroom over a 63 V rail. What it is not, despite the generic listing title, is a PLC or drive component: industrial DC buses in that voltage class use screw-terminal cans, not snap-ins. If your project sheet calls for this format, match the can height and pin spacing before ordering — that is the one dimension the photos cannot settle for you.

Photos

Related products on KOEED

More reservoir capacitance in the catalogue: the 10,000 µF snap-in audio capacitor in 50–100 V ratings — the same format one size down — and the EPCOS B43310 400 V 10,000 µF industrial can for the screw-terminal class.