! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 6 V IC = 8 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 0.7223 -23.6 17.464 165.6 0.0018 81.4 0.9925 -1.4 0.020 0.6988 -45.3 16.123 152.7 0.0034 71.5 0.9807 -2.5 0.050 0.6258 -92.0 11.547 126.0 0.0058 54.6 0.9474 -4.0 0.100 0.5758 -129.1 6.962 105.0 0.0074 51.3 0.9257 -4.8 0.150 0.5655 -145.7 4.844 94.3 0.0086 56.4 0.9187 -5.8 0.200 0.5655 -155.6 3.676 86.6 0.0096 63.6 0.9170 -7.0 0.250 0.5700 -162.0 2.949 80.7 0.0109 71.9 0.9167 -8.3 0.300 0.5771 -166.9 2.456 75.6 0.0120 78.0 0.9142 -9.6 0.400 0.5904 -174.6 1.820 66.8 0.0155 91.5 0.9148 -12.5 0.500 0.6066 179.7 1.438 59.2 0.0206 101.8 0.9149 -15.5 0.600 0.6193 174.2 1.177 52.3 0.0270 110.0 0.9137 -18.7 0.700 0.6339 169.6 0.992 46.1 0.0357 114.9 0.9118 -21.9 0.800 0.6494 165.0 0.851 40.2 0.0452 118.2 0.9107 -25.2 0.900 0.6629 160.8 0.738 34.8 0.0567 119.3 0.9070 -28.5 1.000 0.6756 156.6 0.645 29.9 0.0697 119.6 0.9025 -31.9 1.100 0.6878 152.5 0.568 25.4 0.0841 119.3 0.8984 -35.4 1.200 0.7021 148.3 0.498 21.4 0.0995 118.0 0.8933 -38.9 1.300 0.7091 144.4 0.435 18.1 0.1165 116.5 0.8867 -42.5 1.400 0.7211 140.8 0.383 16.1 0.1345 114.6 0.8801 -46.1 1.500 0.7296 136.9 0.335 14.3 0.1532 112.5 0.8703 -49.8 1.600 0.7375 133.2 0.291 14.2 0.1727 109.8 0.8612 -53.5 1.700 0.7426 129.8 0.255 14.9 0.1933 107.2 0.8519 -57.3 1.800 0.7477 126.2 0.216 18.3 0.2141 104.4 0.8415 -61.1 1.900 0.7524 122.9 0.194 23.2 0.2357 101.7 0.8262 -64.9 2.000 0.7558 119.2 0.173 32.1 0.2568 98.7 0.8141 -68.7 2.200 0.7540 112.6 0.173 49.4 0.2998 92.9 0.7848 -76.4 2.400 0.7530 105.9 0.199 63.2 0.3421 86.8 0.7540 -84.1 2.600 0.7498 99.9 0.249 68.0 0.3823 80.9 0.7206 -91.8 2.800 0.7442 94.3 0.300 68.4 0.4206 75.1 0.6894 -99.5 3.000 0.7293 88.9 0.345 66.8 0.4542 69.4 0.6547 -107.2 ! ! SIEMENS AG Semiconductor Group, Munich