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Diode Drops

Started by PRR, July 03, 2020, 01:09:28 AM

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PRR

Guru Pease once measured a lot of different diodes and plotted the results. This is an appendix in his book (VERY recomended) and hard to find stand-alone for bed/bath study.


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Phoenix

Thanks Paul, good info.

I'd come across this when I was working on a picoamp project, trying to find the lowest forward current clamping option. I'd seriously considered LEDs but the hassle of keeping them in the dark (for my application anyway, other LED indicators on the board causing light pollution) was too great an issue. Couldn't simply wrap them in heatshrink as the insulation resistance of even clear (not to mention typical black - lamp black anyone?) would increase leakage by orders of magnitude.

Ended up finding the LMC662 fA leakage opamp with bootstrapped input protection that ended up suiting my purpose much better.

EBK

The 1N4001 curve stunned me before I realized I was looking at an arrow that pointed to the actual curve.   :icon_eek: :icon_redface: :icon_lol:
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Technical difficulties.  Please stand by.