The PowerCap is designed to be a lithium power source for nonvolatile timekeeping RAMs in directly surfacemountable PowerCap Module (PCM) package.
The PowerCap products allows surface-mounting of the component base, while keeping the temperature sensitive crystal and/or battery in a separate, snap-on assembly.
After a PowerCap module board has been soldered in place and cleaned, the PowerCap is placed on top of the PCM board to form a complete PowerCap module package.
This detachment feature allows for easy removal.