parameter are usually the base current ib,collector current ic,emitter current ie,collector emitter voltagevce,base emitter voltagevbe,collector base voltagevcb which decide the operation &output of the transistor
Hybrid Parameters are the values which is used to find FREQUENCY RESPONSE of a low frequency transistors. you may have doubt like why we are using only H-PARAMETERS why not HYBRID-PI models...
the hybrid equivalent or the h-parameter are used for small signal, low freq. applications. i) h-parameters can be measured easily ii) they are more independent of each other like frequency and...
if you mean hFE, it's Ic/Ib ratio, where Ic is collector current and Ib base current. If BJT is in normal region (Vbe>0 and Vbc<0) hFE=betaF. Here betaF does not depends on voltage applied...