I'm assuming a) that the leakage at 5V is less than at 50V; and b)
the actual part received is not at the maximum point; other than
that, all bets are off.? That said, I'd wager that the 1N4001's
leakage is at least 10-20x that of a 1N4148, possibly more.? Also,
if the 1N4001 happens to leak say, 4.5uA at 5V, it would still pass
its specifications -- probably won't be that bad, but a manufacturer
would not consider the part 'defective.'
A 1N4001 is designed to be a rectifier diode; most of the time, I
see them in power supplies.? The 1N4148 is designed as a fast
signal-level switch, which is a closer match to this application.
Just my opinion.
Regards,
-BW
Bruce Wahler
Ashby Solutions.com?
bw@...
978.597.7008
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Where are you getting the 2uA figure from, Bruce?
The 1N4001-4009 series datasheet I've found only quotes
10uA at maximum reverse voltage, but that's 50V for a
1N4001.
Unfortunately, they don't give comparable figures, because
they're meant for different purposes.? If you look at the
figures for them getting hot, and near their reverse
voltage limits, they're in the same ball park.
I couldn't find figures for the 1N4001 for a low reverse
voltage.? It's probably a little bit higher than the
1N4148, but 2uA at 2-3V doesn't seem right.
- Andy
