[sdiy] Cap leakage a problem for battery backup ?

[Grant Richter]

> A quick question, more 'DIY' than 'synth'...
> If I've got a pair of battery backed 62256 SRAMs on a board, and I put
> in a ceramic de-coupling cap, is there going to be significant enough
> leakage across the cap to reduce battery life ?

I measured leakage currents in a Kemet monolithic ceramic at room
temperature, leakage was about 0.01 microamp (10 nanoamp) for a 1 uF value
(105).

This was for an input filter for a data acquisition system.