申論題

3. An npn silicon (Er = 11.9) bipolar transistor (shown in Fig. 1) at T = 300K has uniform dopings of . The transistor is operating in the inverse- active mode with = 0.565 V. (a) Determine the minority carrier concentrations at x = x_B and x" = 0(b) If the metallurgical base width is 1.1 um, determine the neutral base width (20%)