Hi all
i am working on a new design, power source to be a small 6V alkaline battery.
Open circuit voltage on fresh battery samples shows a consistent 6.50V
(there is also a lithium in the same package, same open ckt voltage).

ABS MAX VDD for the PIC is 6.5V.
The part will mostly be sleeping and quiescent current is planned to be 1-5uA.

There will be a series diode both for polarity protection and to trim the top off the open ckt voltage.

So the question is this:
am I living too dangerously close to the ABS MAX ?
a 4148 diode data sheet says that Vf will be only about 275mV at 1uA so the part will be sitting for most of it's life just a few hundred millivolts under the ABS MAX.

Does anyone have any experience or advice with this ? Long term experience with similar designs, good or bad ?

Using 2 diodes in series that does not appear to be an option for certain reasons.