! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 25 V IC = 10 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 0.8010 -20.2 17.876 166.3 0.0012 81.6 0.9949 -0.9 0.020 0.7666 -38.9 16.641 154.1 0.0025 70.0 0.9874 -1.8 0.050 0.6443 -81.9 12.114 127.7 0.0043 59.0 0.9655 -2.8 0.100 0.5470 -118.8 7.370 106.5 0.0056 54.6 0.9489 -3.5 0.150 0.5211 -137.0 5.146 95.7 0.0066 60.6 0.9444 -4.3 0.200 0.5141 -147.9 3.907 88.1 0.0076 64.4 0.9432 -5.2 0.250 0.5162 -155.4 3.134 82.2 0.0087 72.3 0.9422 -6.2 0.300 0.5227 -160.9 2.611 77.3 0.0096 77.3 0.9417 -7.2 0.400 0.5381 -169.7 1.939 68.9 0.0121 90.7 0.9436 -9.4 0.500 0.5564 -176.0 1.537 61.5 0.0155 101.0 0.9451 -11.7 0.600 0.5709 178.1 1.264 54.8 0.0199 109.6 0.9453 -14.1 0.700 0.5853 172.8 1.070 48.6 0.0261 116.1 0.9452 -16.5 0.800 0.6025 168.1 0.921 42.6 0.0329 120.4 0.9466 -19.0 0.900 0.6175 163.7 0.806 37.1 0.0414 123.3 0.9466 -21.5 1.000 0.6303 159.3 0.710 31.8 0.0509 124.7 0.9477 -24.1 1.100 0.6451 154.7 0.629 26.7 0.0620 125.0 0.9472 -26.8 1.200 0.6616 150.7 0.558 22.2 0.0739 124.6 0.9449 -29.5 1.300 0.6698 146.9 0.491 17.8 0.0870 123.9 0.9442 -32.3 1.400 0.6840 143.1 0.439 14.5 0.1012 122.8 0.9432 -35.1 1.500 0.6972 139.1 0.386 10.7 0.1164 121.1 0.9395 -38.0 1.600 0.7056 135.5 0.338 7.8 0.1321 119.3 0.9360 -40.9 1.700 0.7139 131.9 0.293 4.8 0.1494 117.3 0.9339 -43.9 1.800 0.7254 128.3 0.247 4.4 0.1674 115.0 0.9286 -47.0 1.900 0.7319 124.9 0.210 4.4 0.1858 112.6 0.9218 -50.1 2.000 0.7404 121.1 0.169 7.5 0.2045 110.3 0.9163 -53.1 2.200 0.7483 114.1 0.116 21.6 0.2446 105.0 0.8997 -59.6 2.400 0.7566 107.2 0.104 55.8 0.2854 99.4 0.8799 -66.0 2.600 0.7572 100.8 0.144 77.4 0.3255 93.7 0.8567 -72.7 2.800 0.7574 94.6 0.206 83.0 0.3661 88.3 0.8325 -79.3 3.000 0.7527 88.7 0.263 82.8 0.4036 82.7 0.8028 -85.8 ! ! SIEMENS AG Semiconductor Group, Munich