Greetings to all,

 

Could one of you fellow members please explain how capacitors are labeled on European schematic diagrams ? 

As an example, I am currently using a diagram for a Philips BX250 B 00.  Some capacitor's values are marked as "8E2", "2K2" or "47K" - I am at a loss to understand the markings.  (I'm doing much better with resistors though....I understand their markings). Other caps marked "400" or "82", for example, are obviously noted in picofarads.......likewise, a cap marked 4uf is quite obvious also. 

 

Is there perhaps an online chart of some sort available that would explain the system ?

 

Thank you in advance

Dennis Wesserling - USA

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Capacitors:

1F =1 Farad
1mF=1 Millifarad
1µF=1 Microfarad
1nF=1 Nanofarad
1pF=1 Picofarad

1F=103mF=106µF=109nF=1012pF

Examples as seen on Philips and other European schematics:

8E2 = 8p2 = 8.2pF
4k7 = 4n7 = 4.7nF = 4700pF 
100 = 100µ = 100µF = 100 000 000 pF (electrolytic capacitors)
100 = 100p = 100pF (ceramic, mica and variable capacitors)

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Resistors:

1Ω  =1 Ohm
1kΩ =1 Kiloohm
1MΩ =1 Megaohm
1GΩ =1 Gigaohm

1 Ohm = 10-3kΩ = 10-6MΩ; = 10-9GΩ

Examples as seen on Philips and other European schematics:

100 = 100Ω
4k7 = 4.7k = 4.7kΩ = 4700Ω
8M2 = 8.2M = 8.2MΩ = 8 200 000Ω

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More information about codes:

Colorcodes of Beyschlag resistors

RMA codes (in german language)

 

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The letter stands in the place of the comma.
8E2 = 8,2pF
400 = 400pF
2K2 = 2200pF
47K = 47000pF etc. (K = Kilo/1000)

But where is the circuit and the model that you mention?
Please place the model in RM.org.

Regards WB.

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Thank you, to all who responded, for your input.

Model Philips BX250B(00) has been entered into the site's archives.

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