I have a lot of capacitors around here that are marked 330 that are actually 330pF. That is why I own one of these:
aade.com

Hey guys. I just don't want the wrong information about this stuff getting out there.
33pf does not equal 330pf
334=.33
333=.033
332=.0033
331=.000330 (330pf)
330 is face value pf but the zero means there are no multipliers needed.
so 330=331...both are 330pf
33=33pf as face value also since it's just dual digit

 

Hey guys. I just don't want the wrong information about this stuff getting out there

Then why are you posting incorrect information?

A capacitor marked 330 is 33pF
A capacitor marked 331 is 330pF

They are not equal as you say.

Edit: This, assuming the 3 digit marking in use today. In the past, capacitor markings were all over the place, depending on the manufacturer.

 

How old is the capacitor? Years ago the numbering system(s) was not good. I bought my first capacitor meter over this problem. Capacitors have been hard from the very beginning.

I have some of these where the colors are not clear anymore.

I have 1000 rolls of these. There never was a mark on them.

 

Welcome to AAC!

330 is face value pf but the zero means there are no multipliers needed.
so 330=331...both are 330pf

The current convention is that small value capacitors are labeled in pF and have 2 significant digits and a multiplier. So, 330 = 33 X 10^0 = 33pF, and 331 = 33 X 10^1 = 330pF.

In the old days, electrolytic capacitors used "MF" to mean microfarad (vs megafarad).

 

Hello,

The following sheet may be handy:
https://archive.org/details/altronics-electronics-reference-sheet/mode/2up

More can be found in this thread on maker.pro :
https://maker.pro/forums/threads/electronics-color-code.293281/

Bertus