# Transistor bins - effect on speed

Let's say we have vanilla BC846 (80V), BC847 (50V), BC848 (30V) transistors from the same company, each with 3 bins A, B, C where C supposed to have to highest hfe.

Is that correct, that BC846C should be the fastest, and for example BC847C or BC846B are slower (i.e. have higher capacitances and slower switch-on/off speed)?

I would think they're equally fast, since the datasheet mentions just one value for $f_T$, not different values per $h_{FE}$ class.
• @BarsMonster: for $H_{FE}$ very likely, for $V_{CE}$ I don't know. How would you test this non-destructively? – Federico Russo Jun 24 '11 at 12:38