! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 4 V IC = 0.3 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 0.9832 -2.9 1.144 177.7 0.0021 90.4 0.9992 -0.5 0.020 0.9805 -5.7 1.137 175.3 0.0046 85.6 0.9991 -0.9 0.050 0.9733 -14.1 1.121 168.2 0.0108 82.0 0.9985 -2.2 0.100 0.9446 -27.4 1.078 157.4 0.0205 74.6 0.9942 -4.4 0.150 0.9164 -39.8 1.032 147.6 0.0291 67.9 0.9895 -6.6 0.200 0.8808 -51.4 0.979 138.0 0.0360 61.7 0.9835 -8.5 0.250 0.8467 -62.7 0.930 129.2 0.0416 56.8 0.9775 -10.4 0.300 0.8134 -72.7 0.879 121.2 0.0454 52.5 0.9694 -12.1 0.400 0.7543 -91.4 0.781 107.1 0.0497 46.2 0.9582 -15.7 0.500 0.7118 -107.3 0.694 94.8 0.0504 43.0 0.9474 -19.1 0.600 0.6776 -121.3 0.622 84.4 0.0488 43.5 0.9390 -22.5 0.700 0.6553 -133.6 0.561 75.6 0.0464 47.7 0.9312 -25.8 0.800 0.6407 -144.4 0.510 67.9 0.0443 55.3 0.9234 -29.2 0.900 0.6313 -154.1 0.466 61.1 0.0445 66.3 0.9146 -32.8 1.000 0.6287 -162.7 0.426 55.5 0.0486 78.3 0.9058 -36.2 1.100 0.6288 -170.9 0.393 50.5 0.0569 88.9 0.8982 -39.9 1.200 0.6356 -178.4 0.361 46.8 0.0684 95.6 0.8884 -43.5 1.300 0.6323 175.1 0.330 44.1 0.0832 99.7 0.8791 -47.2 1.400 0.6408 168.6 0.309 43.0 0.1002 101.7 0.8697 -50.9 1.500 0.6416 162.8 0.287 41.1 0.1182 102.4 0.8590 -54.6 1.600 0.6442 157.3 0.268 41.9 0.1376 101.7 0.8459 -58.5 1.700 0.6476 152.1 0.253 42.3 0.1586 100.6 0.8351 -62.4 1.800 0.6528 147.3 0.239 45.9 0.1796 99.0 0.8217 -66.2 1.900 0.6595 142.4 0.231 47.6 0.2018 97.0 0.8057 -70.1 2.000 0.6599 137.8 0.228 51.9 0.2234 94.8 0.7926 -73.9 2.200 0.6635 129.2 0.240 56.5 0.2683 89.9 0.7628 -81.9 2.400 0.6669 121.1 0.263 60.5 0.3129 84.3 0.7316 -89.7 2.600 0.6681 113.9 0.297 62.3 0.3550 78.8 0.6989 -97.7 2.800 0.6692 107.3 0.335 61.9 0.3956 73.3 0.6691 -105.5 3.000 0.6680 101.3 0.374 60.1 0.4326 67.8 0.6366 -113.4 ! ! SIEMENS AG Semiconductor Group, Munich