Diode forward voltages

[steviejr92]

Wow excellent. I'll tell you what though. I am not measuring 100 d9e's

TBH i dont even remember why i wrote them all down, i never used them for any analytical purposes except for now! Guess it was a good choice!

 

[Chuck D. Bones]

Here's some traces

 

[Chuck D. Bones]

Here's a few more

 

[SillyOctpuss]

Lol @Chuck D. Bones walks in and nonchalantly says "Here's some traces" before dropping a motherload.

Dude I wasted my night and just should have asked

 

[Chuck D. Bones]

It's never a waste. Mo' data! Mo' data! Mo' data!

 

[MichaelW]

So I was bored and decided to measure the silicon diodes I have on hand via three different devices and stick the results in a spreadsheet. Yup that's how we roll in the Octpuss house exciting as fook. Hopefully these are useful to someone and if you have any fancy silicon diodes not included in this then add them here along with the mA they were measured at.

On hand at the minute I've got some

1S1588
1SS133
1N4148
1N4148 - Yellow painted glass from 70s
1N914
MA858 - 2 yellow stripes with mark on the cathode lead
MA859 - Blue and black stripes with mark on the cathode lead
BA282 from DIYguitarpedals.com.au in 2016
BA282 from Smallbear in 2020

I included both BA282 batches because the batch from smallbear are all consistently lower fv than the ones I have left from my last order in 2016.

View attachment 33064

What component tester do you have? Should we trust the Peak DCA numbers as the most valid?

 

[SillyOctpuss]

What component tester do you have? Should we trust the Peak DCA numbers as the most valid?

No they're all valid numbers, they're just at different points on each diodes curve.

That's why FV figures don't really mean anything unless you know what current it was tested at. Also that it's just one point on a curve.