! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 12 V IC = 20 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 0.5368 -84.3 13.453 138.4 0.0021 55.3 0.9516 -1.6 0.020 0.5481 -121.6 8.841 119.3 0.0031 43.8 0.9382 -1.8 0.050 0.5624 -153.6 4.079 101.5 0.0036 41.4 0.9291 -2.1 0.100 0.5881 -165.4 2.174 90.9 0.0045 56.7 0.9258 -3.4 0.150 0.6106 -170.5 1.494 83.7 0.0055 66.4 0.9250 -4.8 0.200 0.6300 -174.4 1.136 76.7 0.0067 76.7 0.9239 -6.1 0.250 0.6462 -177.8 0.912 70.5 0.0081 85.9 0.9220 -7.6 0.300 0.6609 179.4 0.759 64.9 0.0097 94.3 0.9191 -9.0 0.400 0.6786 173.7 0.557 54.7 0.0140 107.0 0.9165 -11.9 0.500 0.6901 169.2 0.427 45.7 0.0198 114.4 0.9132 -14.7 0.600 0.7026 164.6 0.338 38.1 0.0270 118.9 0.9100 -17.8 0.700 0.7127 160.3 0.272 31.7 0.0359 121.1 0.9053 -20.7 0.800 0.7227 156.2 0.219 26.7 0.0456 122.5 0.9004 -23.7 0.900 0.7315 152.3 0.175 23.7 0.0565 122.4 0.8932 -26.7 1.000 0.7373 148.1 0.138 22.0 0.0688 121.3 0.8878 -29.7 1.100 0.7460 144.2 0.106 24.6 0.0823 120.5 0.8818 -32.8 1.200 0.7533 140.4 0.083 34.4 0.0965 118.8 0.8741 -35.9 1.300 0.7564 136.8 0.068 49.9 0.1116 117.0 0.8640 -39.2 1.400 0.7594 133.3 0.072 71.4 0.1276 114.8 0.8576 -42.2 1.500 0.7674 129.6 0.082 87.4 0.1442 112.6 0.8470 -45.4 1.600 0.7671 126.2 0.104 94.4 0.1614 110.1 0.8356 -48.7 1.700 0.7664 122.8 0.120 99.2 0.1792 107.6 0.8262 -51.9 1.800 0.7675 119.7 0.148 102.8 0.1976 105.0 0.8140 -55.1 1.900 0.7684 116.5 0.170 99.5 0.2163 102.4 0.7995 -58.4 2.000 0.7667 113.2 0.198 100.2 0.2352 99.8 0.7883 -61.5 2.200 0.7605 107.1 0.241 95.3 0.2729 94.4 0.7608 -68.0 2.400 0.7547 101.0 0.288 90.2 0.3105 88.9 0.7330 -74.6 2.600 0.7493 95.4 0.332 84.5 0.3467 83.4 0.7041 -81.1 2.800 0.7427 90.4 0.372 79.1 0.3823 78.3 0.6766 -87.6 3.000 0.7280 85.6 0.411 73.8 0.4148 73.1 0.6474 -94.2 ! ! SIEMENS AG Semiconductor Group, Munich