When Good Caps Go Bad

When this 0.22 Farad, 2.5 Volt super capacitor's time came, it didn't go easily. It put up a fight: It let all of its electrolyte out through its bottom and onto the PCB, leaving a hard, crusty layer, and a capacitor that doesn't work.

It is typically used in place of a standard "battery backup", and possibly to retain RAM contents between short resets.

Part Specs:
Manufacturer: Cooper Bussmann
Type: PowerStor Aerogel Type B, 0.22F 2.5V Capacitor

Digikey Part Number

When Good Caps Go Bad
Image information
ModelCanon EOS DIGITAL REBEL XT
ISO Speed Ratings200
Exposure Time1/60 sec.
Aperturef/4.5
FlashFlash fired, compulsory flash mode.

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