104K 450 See attached pic

I am reading this as 10 (that's the first 2 digits) x 10000 (that's the 4) = 100000 muF +/- 10% (that's the K) and 450 volts (that's the 450).

How does that look?

 

It is 0.1 uF = 100 muF = 100 nF, if what you mean by muf is millimicrofarad. The rest appears correct. Are you sure it is polypropylene and not polyester/Mylar?

 

Hello,

The K on the capacitors stands for the tolerance, in this case ± 10 %

https://www.circuitspedia.com/how-to-read-ceramic-capacitor-code-value-104-chart/
Bertus

 

It is 0.1 uF = 100 muF = 100 nF, if what you mean by muf is millimicrofarad. The rest appears correct. Are you sure it is polypropylene and not polyester/Mylar?

I'm not sure about the type to be honest. It looks like a polypropylene. See attached.

For the "mu" in muF read greek letter μ . I just couldn't be bothered figuring out how to
type the greek letter. So it should be μF.

But as far as the rules are concerned that is how you read these codes. Is that correct?

 

Hello,

The K on the capacitors stands for the tolerance, in this case ± 10 %

https://www.circuitspedia.com/how-to-read-ceramic-capacitor-code-value-104-chart/
Bertus

Thanks

 

Thanks

That's a great link. I will boomark it. I also see in the example that the units are given in pF rather than μF. That's obviously an important bit of info. Thanks again.

 

I'm not sure about the type to be honest. It looks like a polypropylene. See attached.

For the "mu" in muF read greek letter μ . I just couldn't be bothered figuring out how to
type the greek letter. So it should be μF.

But as far as the rules are concerned that is how you read these codes. Is that correct?

You should be aware that "millimicrofarad" (i.e., nanofarad) was an old fashioned unit. It was commonly used in the 1950's, maybe later. Do not use it. Since "u" is often used for "µ" with a standard keyboard, "mu" could well be misinterpreted as "milli-µ, " not your intended µ only..

 

You should be aware that "millimicrofarad" (i.e., nanofarad) was an old fashioned unit. It was commonly used in the 1950's, maybe later. Do not use it. Since "u" is often used for "µ" with a standard keyboard, "mu" could well be misinterpreted as "milli-µ, " not your intended µ only..

Duly noted. Thanks.

 

So. To conclude

104K 450 = 10×10000 = 100000pF = 0.1 uF with +/- 10% tolerance and 450 volts.

Thanks to everyone for your help