! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 V IC = 4 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 0.8197 -18.1 10.798 167.9 0.0033 81.8 0.9903 -1.7 0.020 0.7923 -34.9 10.183 157.1 0.0064 71.9 0.9797 -3.3 0.050 0.7035 -74.3 8.083 133.2 0.0125 56.1 0.9373 -6.2 0.100 0.6163 -112.7 5.405 110.9 0.0164 45.4 0.8942 -7.9 0.150 0.5836 -133.0 3.906 98.5 0.0180 45.2 0.8774 -9.3 0.200 0.5709 -145.4 3.022 89.7 0.0193 48.7 0.8701 -10.8 0.250 0.5693 -153.7 2.457 82.8 0.0206 53.5 0.8652 -12.6 0.300 0.5736 -160.0 2.066 76.9 0.0218 58.9 0.8607 -14.4 0.400 0.5805 -169.3 1.553 66.8 0.0255 71.2 0.8550 -18.3 0.500 0.5923 -175.8 1.236 57.9 0.0307 82.0 0.8488 -22.4 0.600 0.6069 178.2 1.016 50.2 0.0383 91.2 0.8419 -26.7 0.700 0.6192 173.1 0.859 43.1 0.0485 97.2 0.8342 -30.9 0.800 0.6350 168.2 0.735 36.7 0.0602 101.2 0.8256 -35.2 0.900 0.6489 163.6 0.637 31.2 0.0740 103.2 0.8138 -39.7 1.000 0.6593 159.2 0.554 26.3 0.0900 104.0 0.8034 -44.2 1.100 0.6720 154.8 0.483 22.0 0.1074 103.8 0.7911 -48.8 1.200 0.6873 150.5 0.420 19.1 0.1254 102.6 0.7779 -53.3 1.300 0.6922 146.4 0.363 17.1 0.1450 101.1 0.7628 -57.9 1.400 0.7034 142.9 0.320 16.7 0.1657 99.1 0.7486 -62.4 1.500 0.7117 138.3 0.282 17.4 0.1863 96.9 0.7320 -66.9 1.600 0.7162 134.9 0.246 20.9 0.2075 94.2 0.7146 -71.6 1.700 0.7190 131.3 0.222 24.6 0.2290 91.6 0.6978 -76.2 1.800 0.7250 127.9 0.206 31.3 0.2506 88.9 0.6797 -80.7 1.900 0.7246 124.3 0.197 37.7 0.2723 86.1 0.6597 -85.3 2.000 0.7270 120.8 0.201 45.7 0.2932 83.3 0.6427 -89.8 2.200 0.7256 114.1 0.228 54.6 0.3344 77.5 0.6066 -98.8 2.400 0.7214 108.0 0.266 58.8 0.3730 71.8 0.5718 -107.6 2.600 0.7147 102.0 0.316 59.1 0.4072 66.2 0.5380 -116.4 2.800 0.7091 97.1 0.359 56.5 0.4394 60.9 0.5088 -125.1 3.000 0.6997 92.6 0.396 54.1 0.4676 55.8 0.4810 -133.6 ! ! SIEMENS AG Semiconductor Group, Munich