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Order of magnitude of Cbe capacitance

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EngIntoHW

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Hey,

The Cbe capacitance is given by:
**broken link removed**

What's the order of magnitude of that capacitance please?

Is it what's called Cibo in datasheets?

Thank you.
 
Last edited:
In datasheet usually we don't get Cbe, but instead we get Ft and Cbc.
So if we know FT and Cbc we can easily determine Cbe
Cbe = ( gm / 2*Π*Ft) - Cbc

gm - transconductance = Ic/26mV
And Cbe is in picofarad 1pF ... 100pf
 
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