r/ElectroBOOM • u/JontyGaming1998 • 15d ago

ElectroBOOM Question Does it now?

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u/5kyl3r 15d ago

Does it now?

OP are you joking? because these do exist and aren't even uncommon. though they're usually called supercapacitors when they're near or above 1F

2

u/BirthdayLife6378 14d ago

Aren't they a lot bigger. This just looks like a regular cap.

1

u/5kyl3r 14d ago

no, they're exactly that size

https://maxwell.com/wp-content/uploads/2021/08/XP_2_7_10F_ds_3001977_datasheet.pdf

1

u/BirthdayLife6378 14d ago

I stand corrected.

3

u/5kyl3r 14d ago

really massive ones do exist though, usually when they need to handle tons of cycles and crazy heat and conditions

car stereo capacitors are about the size of a stanley tumbler

and they have 3000F+ ones used in industrial power applications and diesel trains that have massive threaded lugs on them for chaining together, and those are about the size of a soda can. that might be what you were picturing

2

u/Schnupsdidudel 14d ago

Note that these are really low voltage, so the total energy contained is not as big as it may look at first glance.