! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3 V IC = 5 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 0.7956 -17.7 13.087 168.6 0.0022 83.3 0.9938 -1.4 0.020 0.7738 -34.5 12.399 158.0 0.0045 73.0 0.9849 -2.6 0.050 0.6921 -75.2 9.771 133.7 0.0084 57.4 0.9505 -4.8 0.100 0.6084 -114.6 6.389 111.3 0.0111 48.4 0.9182 -6.2 0.150 0.5797 -134.8 4.579 99.3 0.0124 51.0 0.9062 -7.3 0.200 0.5666 -146.9 3.525 90.8 0.0136 55.0 0.9009 -8.7 0.250 0.5682 -155.0 2.855 84.3 0.0149 60.8 0.8980 -10.2 0.300 0.5694 -161.1 2.394 78.7 0.0161 67.4 0.8945 -11.7 0.400 0.5800 -170.2 1.796 69.4 0.0195 80.9 0.8931 -15.0 0.500 0.5915 -176.5 1.427 61.2 0.0246 91.8 0.8902 -18.4 0.600 0.6025 177.6 1.175 53.9 0.0316 100.4 0.8870 -22.0 0.700 0.6167 172.4 0.995 47.3 0.0407 106.4 0.8833 -25.6 0.800 0.6319 167.7 0.856 41.2 0.0514 110.0 0.8790 -29.4 0.900 0.6451 163.2 0.744 35.6 0.0639 111.9 0.8723 -33.1 1.000 0.6583 158.8 0.652 30.8 0.0782 112.5 0.8662 -37.0 1.100 0.6697 154.6 0.574 26.2 0.0938 112.4 0.8594 -41.0 1.200 0.6881 150.4 0.505 22.6 0.1108 111.2 0.8505 -44.9 1.300 0.6928 146.4 0.442 19.8 0.1292 109.7 0.8401 -49.0 1.400 0.7036 142.6 0.394 17.9 0.1485 107.8 0.8307 -53.0 1.500 0.7142 138.7 0.348 16.8 0.1683 105.6 0.8189 -57.0 1.600 0.7201 134.9 0.305 17.4 0.1888 103.0 0.8051 -61.3 1.700 0.7244 131.3 0.269 18.6 0.2105 100.4 0.7927 -65.4 1.800 0.7295 127.6 0.239 22.0 0.2323 97.7 0.7786 -69.5 1.900 0.7334 124.3 0.219 27.8 0.2539 94.8 0.7605 -73.7 2.000 0.7400 120.7 0.203 35.5 0.2756 92.0 0.7470 -77.9 2.200 0.7347 113.9 0.207 47.1 0.3185 86.1 0.7136 -86.2 2.400 0.7349 107.4 0.235 56.3 0.3604 80.0 0.6792 -94.5 2.600 0.7312 101.5 0.278 60.2 0.3986 74.2 0.6451 -102.8 2.800 0.7216 96.2 0.326 60.2 0.4347 68.5 0.6135 -111.0 3.000 0.7127 91.1 0.367 59.2 0.4663 63.0 0.5803 -119.1 ! ! SIEMENS AG Semiconductor Group, Munich