! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3 V IC = 6 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 0.7588 -21.2 14.570 166.7 0.0022 81.0 0.9921 -1.6 0.020 0.7358 -41.0 13.605 154.6 0.0044 70.2 0.9805 -3.0 0.050 0.6552 -85.2 10.188 128.9 0.0080 55.0 0.9416 -4.9 0.100 0.5917 -123.3 6.386 107.3 0.0103 48.2 0.9113 -6.0 0.150 0.5740 -141.6 4.500 95.9 0.0115 52.3 0.9008 -7.2 0.200 0.5689 -152.2 3.437 87.9 0.0128 57.6 0.8974 -8.6 0.250 0.5727 -159.2 2.770 81.6 0.0141 64.4 0.8947 -10.1 0.300 0.5769 -164.8 2.314 76.1 0.0154 71.3 0.8923 -11.6 0.400 0.5886 -173.0 1.726 66.9 0.0192 84.2 0.8913 -15.0 0.500 0.6047 -178.8 1.366 58.7 0.0246 94.7 0.8878 -18.5 0.600 0.6158 175.5 1.120 51.5 0.0320 103.1 0.8851 -22.2 0.700 0.6313 170.6 0.944 44.9 0.0416 108.5 0.8809 -25.8 0.800 0.6460 166.0 0.809 38.9 0.0524 111.6 0.8766 -29.5 0.900 0.6599 161.7 0.703 33.4 0.0653 113.1 0.8692 -33.5 1.000 0.6706 157.4 0.612 28.5 0.0800 113.4 0.8626 -37.3 1.100 0.6861 153.1 0.535 24.0 0.0958 113.0 0.8548 -41.3 1.200 0.6984 149.0 0.469 20.6 0.1134 111.6 0.8457 -45.3 1.300 0.7063 145.1 0.407 17.6 0.1317 110.0 0.8358 -49.4 1.400 0.7157 141.4 0.359 17.1 0.1514 107.8 0.8245 -53.5 1.500 0.7249 137.2 0.314 15.7 0.1712 105.5 0.8136 -57.5 1.600 0.7297 133.6 0.276 17.1 0.1916 102.8 0.7986 -61.8 1.700 0.7352 130.2 0.240 18.7 0.2134 100.1 0.7855 -65.9 1.800 0.7383 126.7 0.212 25.0 0.2349 97.3 0.7705 -70.1 1.900 0.7429 123.1 0.197 30.8 0.2569 94.5 0.7527 -74.3 2.000 0.7464 119.5 0.188 40.0 0.2784 91.5 0.7378 -78.5 2.200 0.7439 112.9 0.203 52.0 0.3213 85.6 0.7042 -86.8 2.400 0.7396 106.6 0.236 60.6 0.3621 79.5 0.6692 -95.1 2.600 0.7359 100.8 0.283 63.0 0.4003 73.6 0.6344 -103.4 2.800 0.7242 95.3 0.333 62.0 0.4353 68.0 0.6022 -111.5 3.000 0.7149 90.4 0.376 60.1 0.4661 62.6 0.5691 -119.7 ! ! SIEMENS AG Semiconductor Group, Munich