Mehmet Emre Doğan

BC238 BJT

Figure 1: The circuit in LTSpice

Step 1: Add the following spice directive

 .MODEL BC238 NPN ( IS=16.9F NF=1 NR=1 RE=567M RC=1
                    +RB=10 VAF=56.7 VAR=28.3 ISE=154F ISC=154F
                    +NE=1.5 NC=1.5 BF=1.16K BR=5 IKF=29.5M
                    +IKR=29.5M CJC=3.35P CJE=6.85P VJC=3.57 VJE=1.09
                    +MJC=489M MJE=432M TF=796P TR=103N EG=1.11
                    +KF=0 AF=1 )

Step 2: Name your BJT

BC238

Step 3: Success 🎉

Figure 2: Input and output waveforms observed in virtual scope

bc238_demo.asc