! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 8 V IC = 1.2 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 0.9454 -6.0 4.072 175.6 0.0016 89.1 0.9987 -0.6 0.020 0.9393 -12.0 4.029 171.3 0.0035 81.2 0.9985 -1.1 0.050 0.9070 -28.8 3.829 159.1 0.0084 74.8 0.9932 -2.6 0.100 0.8304 -53.8 3.375 142.1 0.0144 63.4 0.9797 -4.7 0.150 0.7568 -74.5 2.925 128.7 0.0181 56.2 0.9676 -6.4 0.200 0.6934 -91.4 2.524 117.7 0.0204 51.5 0.9587 -7.8 0.250 0.6518 -105.3 2.201 108.9 0.0217 49.8 0.9506 -9.2 0.300 0.6225 -116.6 1.940 101.6 0.0223 49.8 0.9442 -10.4 0.400 0.5867 -134.4 1.548 89.9 0.0224 53.7 0.9375 -13.1 0.500 0.5717 -147.5 1.281 80.2 0.0232 62.8 0.9331 -15.8 0.600 0.5666 -157.8 1.088 72.0 0.0246 75.1 0.9301 -18.6 0.700 0.5681 -166.6 0.943 64.9 0.0287 88.1 0.9263 -21.4 0.800 0.5768 -173.9 0.829 58.3 0.0344 98.0 0.9233 -24.4 0.900 0.5818 179.6 0.738 52.4 0.0425 105.3 0.9208 -27.4 1.000 0.5890 173.7 0.663 47.1 0.0532 109.6 0.9166 -30.5 1.100 0.5986 167.8 0.599 42.4 0.0649 112.6 0.9135 -33.7 1.200 0.6127 162.7 0.540 38.1 0.0783 113.6 0.9102 -36.9 1.300 0.6197 158.0 0.484 34.5 0.0930 113.8 0.9032 -40.2 1.400 0.6302 153.4 0.443 32.2 0.1096 113.2 0.8991 -43.5 1.500 0.6401 148.8 0.401 29.4 0.1263 112.0 0.8941 -46.8 1.600 0.6505 144.6 0.365 27.9 0.1447 110.4 0.8849 -50.4 1.700 0.6561 140.4 0.330 26.9 0.1639 108.6 0.8790 -53.9 1.800 0.6665 136.4 0.298 27.9 0.1837 106.5 0.8708 -57.4 1.900 0.6747 132.5 0.273 28.8 0.2046 104.2 0.8589 -61.0 2.000 0.6805 128.5 0.248 32.7 0.2255 101.8 0.8496 -64.5 2.200 0.6916 121.2 0.226 39.8 0.2687 96.5 0.8276 -72.0 2.400 0.6951 113.9 0.225 49.4 0.3127 91.0 0.8014 -79.4 2.600 0.7012 107.4 0.252 56.6 0.3548 85.3 0.7728 -86.9 2.800 0.6999 101.1 0.288 60.6 0.3963 79.6 0.7457 -94.4 3.000 0.6955 95.1 0.323 61.8 0.4345 73.9 0.7138 -102.0 ! ! SIEMENS AG Semiconductor Group, Munich