Hey, I'm working on a circuit that will use two 500mA solar panels.
I have several 1n4001 1-amp rectifier diodes to use as blocking diodes, however I'm not sure I want to go all the way to the limit with them, as my panels will generate 1 amp wired in parallel.
I can't seem to find any 2-amp diodes online.
Is it wise to use a higher diode? If so, where can I get one? My operating voltage is 5v.
Also, can I increase the maximum current rating by just wiring two 1n4001's in parallel?
Thanks!
1N5400 series will handle 3A : Datasheet here
Or 1N5820 Schottky's : Datasheet here
Not sure why you couldn't find anything?
Is it wise to use a higher diode?
Yes every time.
You should not run any component at greater than 80% its maximum rating, often less.
This is known as "derating" and is very important for reliability.
Hi,
Use a separate blocking diode on each panel, don't connect panel outputs directly together in parallel.
Then connect the battery side of the diode together.
Tom.... 
One 1N4001 for each panel of course is the correct answer, but you may wish to use Schottkys just to get that last little bit of efficiency out of them with the lower voltage drop.
Hi,
What voltage are your PVs, what are their specs?
Tom....
Totally agree re using Schottkys.
Yes, block each panel or if one's in shade it will steal most of your power. Schottkys are de-facto
for this use, they don't get as hot for a start...
