0 0 votes $\alpha$ - cut off frequency of a bipolar junction transistor increases with the increase in base width increases with the increase in emitter width increases with increase in the collector width increases with decrease in the base width. BJT and MOSFET Amplifiers gate1993-ec bipolar-junction-transistor electronic-devices + – admin 262 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.