! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 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 0.9421 -6.5 4.094 175.2 0.0031 88.9 0.9987 -0.9 0.020 0.9339 -13.2 4.050 170.3 0.0060 81.6 0.9974 -1.7 0.050 0.9001 -31.7 3.817 156.9 0.0141 72.8 0.9880 -4.1 0.100 0.8156 -58.6 3.302 138.4 0.0240 59.9 0.9628 -7.3 0.150 0.7427 -80.3 2.818 124.4 0.0299 52.0 0.9423 -9.6 0.200 0.6818 -97.5 2.400 112.8 0.0334 47.2 0.9266 -11.6 0.250 0.6457 -111.4 2.072 103.6 0.0352 45.1 0.9145 -13.5 0.300 0.6207 -122.5 1.815 96.0 0.0360 44.4 0.9044 -15.3 0.400 0.5915 -139.4 1.438 83.7 0.0366 47.5 0.8910 -19.1 0.500 0.5838 -151.7 1.182 73.4 0.0372 54.9 0.8801 -22.9 0.600 0.5786 -161.7 1.001 64.7 0.0393 65.0 0.8708 -26.9 0.700 0.5829 -169.7 0.865 57.2 0.0446 75.4 0.8602 -30.9 0.800 0.5917 -176.7 0.761 50.4 0.0523 84.0 0.8503 -34.9 0.900 0.5962 177.2 0.673 44.5 0.0628 90.5 0.8395 -39.1 1.000 0.6048 171.5 0.601 39.1 0.0761 94.5 0.8284 -43.3 1.100 0.6164 165.8 0.540 34.5 0.0909 97.0 0.8172 -47.7 1.200 0.6275 160.8 0.484 30.9 0.1077 97.6 0.8045 -51.8 1.300 0.6343 156.3 0.433 28.0 0.1257 97.4 0.7900 -56.3 1.400 0.6461 151.8 0.394 26.7 0.1452 96.6 0.7770 -60.6 1.500 0.6552 147.2 0.356 25.0 0.1647 95.2 0.7619 -64.9 1.600 0.6588 143.4 0.325 25.4 0.1854 93.4 0.7457 -69.3 1.700 0.6660 139.2 0.298 25.9 0.2067 91.3 0.7303 -73.7 1.800 0.6728 135.3 0.275 28.6 0.2280 89.1 0.7142 -78.1 1.900 0.6765 131.5 0.260 31.8 0.2493 86.6 0.6954 -82.6 2.000 0.6822 127.8 0.247 36.6 0.2708 84.2 0.6806 -86.9 2.200 0.6836 120.4 0.253 42.9 0.3128 79.0 0.6460 -95.8 2.400 0.6835 113.8 0.272 49.2 0.3535 73.5 0.6129 -104.4 2.600 0.6857 107.4 0.307 51.8 0.3910 68.1 0.5802 -113.2 2.800 0.6835 102.1 0.341 52.1 0.4259 62.9 0.5519 -121.8 3.000 0.6768 96.8 0.379 51.0 0.4566 57.7 0.5227 -130.4 ! ! SIEMENS AG Semiconductor Group, Munich