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Capacitor notation

I have two capacitors lying here, with the following inscriptions:

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One is blue and circular and reads:

B 102K 2KV

The other is green and a rounded rectangular shape and reads:

104K100V

The blue one reads approx 1nF on my meter, the green one reads approx 100nF.

This makes sense if you take the three numbers (102 or 104) read the same way as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000, and the units to be pF. So what does the K mean? I originally thought it was a multiplier (1000), but it seems unnecessary, unless the units without the K are in fF!

Also, what is the B on the blue one? I asssume it's not to indicate the colour ;-)

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Reply to
Peter Hucker
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K means 10% tolerance. J means 5% tolerance.

No tolerance code usually means 20% tolerance but can be worse. For example, ceramics with Z5U and similar dielectrics usually have tolerance of +80/-20% at 25 degrees C and the value varies greatly with temperature

- generally decreasing as the temperature goes much away from 25 C in either direction.

That I don't know.

- Don Klipstein ( snipped-for-privacy@misty.com)

Reply to
Don Klipstein

as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000, and the units to be pF. So what does the K mean? I originally thought it was a multiplier (1000), but it seems unnecessary, unless the units without the K are in fF!

colour ;-)

I could translate these for you, but you should have a crack at them yourself, first. See:

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Reply to
John Popelish

as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000, and the units to be pF.

That's it.

but it seems unnecessary, unless the units without the K are in fF!

K is 10% tolerance.

colour ;-)

Manufacturer's mark.

Graham

Reply to
Eeyore

Use

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and enter the codes, it can decodes most of these notations

Reply to
HKJ

as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000, and the units to be pF. So what does the K mean? I originally thought it was a multiplier (1000), but it seems unnecessary, unless the units without the K are in fF!

colour ;-)

lets see, i'll take wack at it. 0.001 Uf at 10% ? that's just a guess,. i just ordered some caps the other day, the K was on the top of me head.

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Reply to
Jamie

Ah I see. Thanks.

Ouch - are those things much use?

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Reply to
Peter Hucker

as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000, and the units to be pF. So what does the K mean? I originally thought it was a multiplier (1000), but it seems unnecessary, unless the units without the K are in fF!

colour ;-)

Christ, what a mess! Rather ambiguous when the third number COULD be a multiplier.

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Reply to
Peter Hucker

100nF.

same way as resistors - 1, 0, then 2 (or 4) zeroes. I.e. 1000 or 100000= , and the units to be pF. So what does the K mean? I originally though= t it was a multiplier (1000), but it seems unnecessary, unless the units= without the K are in fF!

the colour ;-)

I wish I knew of a place in the UK that had their components organised b= etter on their websites. Maplin are almost impossible to use, Farnell a= re getting close.

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http://www.petersparrots.com    http://www.insanevideoclips.com    http:=
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Reply to
Peter Hucker

On Mon, 17 Jul 2006 12:13:55 +0100, "Peter Hucker" Gave us:

multiplier.

The third digit IS ALWAYS a multiplier.

If it is expressed in 3 digit form, it is in picofarads to the order of magnitude given in the third digit.

A nanofard part declaration is two significant digits with the lower case "n" designation in the place where the third digit would be.

That was a greta page BTW. Nothing ambiguous at all.

Reply to
Phat Bytestard

a multiplier.

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shows a 150nF capacitor with "1=

50". If the third digit was a multiplier, that would be 15 x 10^0 =3D 1= 5nF, yet the site claims it is a 150nF cap. 
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Reply to
Peter Hucker

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