My favourite small Schottky diodes, 3 pin SOT-23...
BAT54 =3D single diode
BAT54A =3D Dual, common anode
BAT54C =3D Dual, common cathode
BAT54S =3D Dual, in series

As others say, Vf low at low current.

On 30 Apr 2013 at 19:43, John Gardner wrote:

> Can someone recommend a low-Vf diode for diode-OR
>=20
> SRAM retention?
>=20
> 5V system; ~3V Li coin cell backup power.
>=20
>  thanks,
>=20
>    Jack
> --=20
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>=20



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