# Junction capacitance for NPN transistor

#### mghg13

Joined Jul 17, 2013
62
Hello,

I need some help concerning the design of simple CE amplifier.

I am using the BC107B NPN transistor and in order to determine the frequency response of the amplifier, I need to know the junction capacitances of the transistor, i.e. $$C_{bc}$$ , $$C_{be}$$ and $$C_{ce}$$

However the datasheets provide data only for $$C_{bc}$$ and $$C_{be}$$ .

How do I get the value for $$C_{ce}$$ ? Can I just calculate it as the capacitance obtained by the series connection of $$C_{bc}$$ and $$C_{be}$$ ?