S5KC20 and V19B Equivalent

[s57aw]

Hello,

Can you please suggest the best and EU available equivalent for

S5KC20 Rectifier diode

http://pdf.datasheetarchive.com/datashe … 000-56.pdf

and

V19B diode

http://www.datasheetdir.com/V19B+download

(used in DC-DC converter)

Regards,

Robert