! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1 V IC = 0.1 mA ! Common Emitter S-Parameters: January 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9925 -2.0 0.446 177.8 0.0035 91.7 0.9998 -0.5 0.020 0.9912 -4.1 0.443 175.8 0.0070 86.6 0.9996 -1.1 0.050 0.9887 -10.0 0.439 168.8 0.0172 83.4 0.9994 -2.8 0.100 0.9753 -19.6 0.431 158.3 0.0336 77.3 0.9955 -5.6 0.150 0.9623 -29.0 0.423 148.1 0.0491 71.5 0.9914 -8.4 0.200 0.9393 -38.0 0.415 138.0 0.0630 65.7 0.9849 -11.0 0.250 0.9187 -46.9 0.410 128.3 0.0753 60.4 0.9782 -13.7 0.300 0.8991 -55.1 0.402 119.4 0.0853 55.4 0.9689 -16.2 0.400 0.8528 -71.3 0.386 103.2 0.1001 46.4 0.9517 -21.1 0.500 0.8116 -86.1 0.369 89.1 0.1079 39.4 0.9340 -25.9 0.600 0.7749 -99.4 0.350 77.1 0.1099 33.8 0.9160 -30.6 0.700 0.7453 -112.0 0.332 66.9 0.1075 30.4 0.8965 -35.2 0.800 0.7210 -123.2 0.313 58.2 0.1024 28.8 0.8810 -39.6 0.900 0.7049 -133.8 0.294 51.6 0.0952 29.5 0.8619 -44.2 1.000 0.6925 -143.6 0.274 46.4 0.0884 33.2 0.8440 -48.7 1.100 0.6850 -152.9 0.256 42.1 0.0834 40.0 0.8247 -53.3 1.200 0.6834 -161.7 0.241 40.1 0.0823 48.9 0.8078 -57.8 1.300 0.6753 -169.2 0.221 39.1 0.0863 58.6 0.7874 -62.4 1.400 0.6763 -176.3 0.211 39.7 0.0963 67.2 0.7710 -66.8 1.500 0.6759 176.2 0.201 40.6 0.1105 73.2 0.7518 -71.3 1.600 0.6736 170.2 0.194 43.8 0.1276 76.7 0.7319 -75.9 1.700 0.6783 164.1 0.190 46.5 0.1482 78.9 0.7133 -80.4 1.800 0.6753 158.3 0.195 51.5 0.1695 79.4 0.6942 -84.9 1.900 0.6767 152.9 0.202 54.2 0.1917 79.1 0.6734 -89.4 2.000 0.6754 147.6 0.212 57.6 0.2139 78.0 0.6558 -93.7 2.200 0.6738 138.0 0.244 59.2 0.2591 74.8 0.6184 -102.7 2.400 0.6712 129.3 0.277 60.2 0.3031 70.5 0.5838 -111.5 2.600 0.6696 121.5 0.319 58.4 0.3436 65.8 0.5511 -120.2 2.800 0.6672 114.5 0.357 55.8 0.3821 61.0 0.5230 -128.9 3.000 0.6621 108.1 0.389 52.8 0.4159 56.2 0.4959 -137.4 ! ! SIEMENS AG Semiconductor Group, Munich