! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 5 V IC = 20 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 0.5408 -120.6 10.400 127.0 0.0043 41.2 0.8862 -3.1 0.020 0.6089 -147.4 6.158 109.4 0.0052 30.1 0.8647 -2.8 0.050 0.6426 -166.0 2.668 93.3 0.0056 30.6 0.8552 -3.0 0.100 0.6639 -173.4 1.369 81.0 0.0065 43.0 0.8496 -4.7 0.150 0.6843 -176.8 0.911 71.5 0.0077 59.5 0.8460 -6.6 0.200 0.6989 -179.8 0.669 62.9 0.0093 71.0 0.8416 -8.5 0.250 0.7111 177.6 0.520 55.4 0.0113 81.1 0.8357 -10.3 0.300 0.7205 174.8 0.415 48.7 0.0137 88.5 0.8303 -12.0 0.400 0.7325 169.8 0.283 37.8 0.0196 100.0 0.8197 -15.6 0.500 0.7397 165.7 0.201 30.7 0.0275 106.1 0.8118 -18.9 0.600 0.7474 161.2 0.145 27.2 0.0369 109.2 0.8014 -22.5 0.700 0.7541 157.2 0.107 27.9 0.0474 111.0 0.7910 -25.8 0.800 0.7604 153.3 0.078 34.6 0.0589 111.6 0.7819 -29.2 0.900 0.7665 149.6 0.065 51.7 0.0716 111.0 0.7714 -32.6 1.000 0.7688 145.8 0.063 72.4 0.0857 110.2 0.7599 -36.1 1.100 0.7709 141.8 0.076 85.4 0.1006 109.1 0.7508 -39.6 1.200 0.7754 138.1 0.092 94.3 0.1163 107.3 0.7387 -43.2 1.300 0.7768 134.8 0.111 98.2 0.1325 105.5 0.7264 -46.7 1.400 0.7763 131.5 0.134 98.6 0.1501 103.5 0.7149 -50.2 1.500 0.7799 128.0 0.153 98.2 0.1675 101.2 0.7014 -53.7 1.600 0.7750 124.8 0.175 95.6 0.1855 98.8 0.6879 -57.3 1.700 0.7744 121.7 0.191 94.6 0.2038 96.4 0.6749 -60.9 1.800 0.7754 118.6 0.217 93.4 0.2223 94.0 0.6607 -64.3 1.900 0.7718 115.6 0.235 90.7 0.2414 91.4 0.6452 -68.0 2.000 0.7671 112.4 0.257 89.8 0.2595 88.9 0.6315 -71.5 2.200 0.7615 106.7 0.292 83.5 0.2969 83.7 0.6034 -78.6 2.400 0.7508 101.3 0.329 77.9 0.3331 78.5 0.5750 -85.8 2.600 0.7450 95.8 0.367 73.1 0.3671 73.4 0.5472 -93.0 2.800 0.7365 91.3 0.402 68.1 0.3996 68.5 0.5214 -100.1 3.000 0.7244 86.9 0.431 63.5 0.4291 63.6 0.4958 -107.5 ! ! SIEMENS AG Semiconductor Group, Munich