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'[EE]: Determine 1206/0805 capacitor value'
2003\02\11@010929 by

>> Is there a standard color code of numbering system used for chip capacitors?

No.

Pisses me off, too.  They print values on resistors that are the same
size; and resistors are easier to measure :-(

BillW

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William Chops Westfield wrote:
>
> >> Is there a standard color code of numbering system used for chip capacitors?
>
> No.
>
> Pisses me off, too.  They print values on resistors that are the same
> size; and resistors are easier to measure :-(

Measure it in circuit. Generally most capacitance
meters use a high(ish) frequency and the rest of the
circuit is isolated from caps via RC time constants.
You can measure a cap value prob within 10% or 20%
higher than actual, usually good enough to tell you
what it is. One exception is chip decoupling caps
that tend to be paralleled on psu rails.
-Roman

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Some lucky few do have a numbering system on them.
The numbering like 105 means 0.000001 uF (ie, last digits are the number of
0's berore the first number.

KreAture

{Original Message removed}
Isn't it 1.000.000 pF (1 uF) ?
That is "10" with 5 zeros, much like
the resistor system ? That would be easier

"103" =  10nF"103" =  10nF"102" =   1nF
"101" = 100pF

And so on.

Jan-Erik Söderholm.

{Original Message removed}
> Some lucky few do have a numbering system on them.
> The numbering like 105 means 0.000001 uF (ie, last digits are the number
of
> 0's berore the first number.

I seriously doubt that unless you can show me a data sheet that says this
explicitly.  All such three digit numbers I've seen (and I strongly
suspect yours too) are a floating point representation for the capacitance
in picofarads.  The first two digits are the mantissa, with the third
being the exponent of 10.  Therefore "105" means 10 x 10**5 pF =
1,000,000pF = 1uF.

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