! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 25 V IC = 15 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 0.7378 -31.0 18.695 159.8 0.0012 77.1 0.9899 -1.0 0.020 0.6774 -57.2 16.159 143.6 0.0022 62.0 0.9784 -1.7 0.050 0.5516 -104.3 9.884 116.9 0.0037 54.9 0.9601 -2.3 0.100 0.5054 -135.5 5.572 99.6 0.0049 57.4 0.9510 -3.1 0.150 0.5081 -149.0 3.828 90.5 0.0060 64.9 0.9492 -4.1 0.200 0.5173 -157.1 2.890 83.7 0.0071 70.6 0.9484 -5.1 0.250 0.5319 -162.7 2.312 78.1 0.0082 77.6 0.9485 -6.2 0.300 0.5445 -167.4 1.925 73.3 0.0093 84.0 0.9475 -7.3 0.400 0.5650 -175.0 1.430 64.9 0.0120 96.8 0.9477 -9.7 0.500 0.5849 179.3 1.132 57.2 0.0156 106.3 0.9476 -12.1 0.600 0.6008 173.7 0.930 50.2 0.0209 114.2 0.9486 -14.6 0.700 0.6149 168.8 0.786 43.6 0.0275 119.6 0.9466 -17.0 0.800 0.6313 164.1 0.674 37.2 0.0349 122.8 0.9471 -19.6 0.900 0.6439 159.8 0.587 31.1 0.0437 124.6 0.9456 -22.2 1.000 0.6540 155.6 0.510 25.4 0.0540 125.3 0.9447 -24.8 1.100 0.6691 151.5 0.446 20.1 0.0655 125.2 0.9444 -27.7 1.200 0.6839 147.3 0.387 15.4 0.0776 124.2 0.9419 -30.3 1.300 0.6911 143.5 0.330 10.9 0.0913 123.2 0.9388 -33.2 1.400 0.7031 140.0 0.285 7.9 0.1055 121.8 0.9347 -36.0 1.500 0.7127 135.8 0.242 4.5 0.1207 120.0 0.9319 -38.9 1.600 0.7188 132.1 0.198 3.7 0.1369 117.7 0.9260 -41.9 1.700 0.7296 128.5 0.158 2.6 0.1541 115.7 0.9211 -44.9 1.800 0.7375 125.0 0.119 6.3 0.1715 113.3 0.9140 -47.9 1.900 0.7410 121.6 0.090 15.1 0.1900 110.9 0.9041 -51.1 2.000 0.7461 117.8 0.070 38.2 0.2085 108.5 0.8972 -54.1 2.200 0.7527 111.1 0.087 80.4 0.2472 103.1 0.8769 -60.4 2.400 0.7524 104.3 0.145 95.5 0.2867 97.5 0.8541 -66.7 2.600 0.7546 97.9 0.204 94.8 0.3251 91.9 0.8280 -73.2 2.800 0.7518 92.2 0.270 91.4 0.3631 86.6 0.8018 -79.5 3.000 0.7393 86.6 0.327 86.8 0.3991 81.2 0.7714 -85.8 ! ! SIEMENS AG Semiconductor Group, Munich