Is 104 Capacitor .1uf ?

[LucifersTrip]

 I actually ran out of small .1 caps and pulled out some toys I used for circuit bending to look for some.

In the 1st one, there's some ceramic caps with "104" on them. After a few Google searches, I see they actually look like .1's I need

I just wanted to confirm that fact.


I'm asking because I saw numerous caps with underlines and overlines above and below certain numbers on the caps. I don't
know what that's code for.

thanx

[CynicalMan]

104 is 0.1uF. Normally there would be a letter indicating tolerance after the 104, but the numbers refer to the value.

[glesconz]

yep, this always confuses me, along with everything else in life...this site helped...

http://beamdream.solarbotics.net/Tutorials/CapGuide.htm

Cheers
Glenn

[LucifersTrip]

Sounds great...thanx for the confirmation & info...I always wondered why, since they decided to print something on the cap,
why wouldn't it just be the value.

I can now solder the Os Mutantes Fuzz

[DougH]

This may be covered here too, haven't checked: http://www.diystompboxes.com/wiki/index.php?title=Main_Page

[aquataur]

This works like on a resistor. On this, the last ring (in the group of three or for, not the precision ring that is separated) means the multiplier.
e.g. A red ring in this position means a multiplier of 10 to the power of two = 100.

They made the rings so that resistors, once assembled on a board, can be read from all perspectives.

Capacitors don´t have rings, but rather numbers. But similarly, the last number means the multiplier. So 104 means 10 x 10 to the power of 4 (in pF), equalling 100 nF. Similarly, a 154 would mean 150nF or 0.15 uF.

Unfortunatly for the unexperienced (and even the expert sometimes) they also print loads of other junk on the parts, like manufacturer´s proprietary information. Sometimes it is a bit of guesswork. But now you know what to look for.

have fun,

--helmut

[LucifersTrip]

This works like on a resistor. On this, the last ring (in the group of three or for, not the precision ring that is separated) means the multiplier.
e.g. A red ring in this position means a multiplier of 10 to the power of two = 100.

They made the rings so that resistors, once assembled on a board, can be read from all perspectives.

Capacitors don´t have rings, but rather numbers. But similarly, the last number means the multiplier. So 104 means 10 x 10 to the power of 4 (in pF), equalling 100 nF. Similarly, a 154 would mean 150nF or 0.15 uF.

Unfortunatly for the unexperienced (and even the expert sometimes) they also print loads of other junk on the parts, like manufacturer´s proprietary information. Sometimes it is a bit of guesswork. But now you know what to look for.

have fun,

--helmut

That's funny, I did realize  that "powers of ten" code after my last post, but still don't know what the underlining means. For example,
I have one 104 cap that has the 04 underlined. Does that mean anything? Do they code tolerance?

thanx again for all the info

[RedHouse]

Save this as a text file on yur computer:

US                 JAPAN     Euro
----- - - - - - - ------- - ------

.1                  104k     100n
.12                 124k     120n
.15                 154k     150n
.22                 224k     22n
.33                 334k     330n
.47                 474k     470n
.56                 564k     560n
.68                 684k     680n
.82                 824k     820n

.01     10,000pF    103k     10n
.012    12,000pF    123k     12n
.015    15,000pF    153k     15n
.022    22,000pF    223k     22n
.033    22,000pF    333k     33n
.047    47,000pF    473k     47n
.056    56,000pF    563k     56n
.068    68,000pF    683k     68n
.082    82,000pF    823k     82n

.001     1000pF     102k     1n0
.0015    1500pF     152k     1n5
.0022    2200pF     222k     2n2
.0033    3300pF     332k     3n3
.0047    4700pF     472k     4n7
.0056    5600pF     562k     5n6
.0068    6800pF     682k     6n8
.0082    8200pF     822k     8n2

100pF                101
150pF                151
220pF                221
470pF                471

100pF                100
150pF                150
220pF                220
470pF                470

[LucifersTrip]

Does the underlining mean anything?

[jkokura]

no.

[LucifersTrip]

no.

thanx

[zombiwoof]

The way I remember it is that the last number tells you how many zeros to add to get pf.  So 104 is "10" plus 4 zeros= 100000pf.  To convert to uf move the deciimal over 6 places to the left and it's .1uf.  Simple.  To convert to nf from pf move the decimal over 3 places to the left = 100nf.

Al