! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3.5 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 0.5777 -134.1 8.743 121.1 0.0062 35.2 0.8310 -4.3 0.020 0.6433 -155.3 4.959 104.5 0.0073 25.6 0.8060 -3.7 0.050 0.6732 -169.7 2.097 88.2 0.0078 26.9 0.7952 -4.0 0.100 0.6936 -175.7 1.047 73.7 0.0087 40.0 0.7860 -6.1 0.150 0.7088 -178.7 0.674 62.4 0.0101 55.3 0.7779 -8.4 0.200 0.7225 178.3 0.478 52.8 0.0122 65.9 0.7683 -10.5 0.250 0.7325 175.9 0.360 44.7 0.0146 75.6 0.7578 -12.6 0.300 0.7398 173.4 0.279 38.2 0.0175 82.7 0.7489 -14.5 0.400 0.7476 168.5 0.179 29.6 0.0247 92.6 0.7335 -18.1 0.500 0.7527 164.4 0.118 27.3 0.0331 97.7 0.7208 -21.6 0.600 0.7601 160.2 0.083 32.6 0.0433 100.7 0.7069 -25.2 0.700 0.7628 156.2 0.065 47.3 0.0547 102.6 0.6964 -28.6 0.800 0.7697 152.4 0.060 65.3 0.0667 103.1 0.6850 -32.2 0.900 0.7729 148.8 0.069 80.4 0.0801 103.1 0.6733 -35.8 1.000 0.7736 145.1 0.081 89.0 0.0946 102.3 0.6615 -39.4 1.100 0.7768 141.4 0.098 93.4 0.1099 101.3 0.6496 -43.1 1.200 0.7805 137.8 0.117 94.3 0.1256 99.7 0.6376 -46.7 1.300 0.7776 134.4 0.134 94.7 0.1421 98.1 0.6238 -50.4 1.400 0.7802 131.2 0.156 93.8 0.1597 96.2 0.6122 -54.1 1.500 0.7783 127.8 0.174 92.1 0.1766 94.0 0.5989 -57.7 1.600 0.7774 124.6 0.196 89.7 0.1944 91.9 0.5850 -61.5 1.700 0.7741 121.5 0.209 88.5 0.2127 89.6 0.5721 -65.2 1.800 0.7729 118.6 0.232 87.3 0.2308 87.3 0.5589 -68.9 1.900 0.7719 115.7 0.250 84.4 0.2491 85.0 0.5435 -72.7 2.000 0.7695 112.6 0.268 82.8 0.2671 82.7 0.5314 -76.3 2.200 0.7598 107.0 0.303 77.7 0.3026 77.8 0.5049 -83.9 2.400 0.7533 101.4 0.334 72.4 0.3377 72.9 0.4796 -91.3 2.600 0.7455 96.3 0.374 67.9 0.3700 68.1 0.4550 -98.9 2.800 0.7319 92.1 0.403 63.1 0.4005 63.5 0.4328 -106.5 3.000 0.7193 87.7 0.428 59.1 0.4289 59.0 0.4114 -114.3 ! ! SIEMENS AG Semiconductor Group, Munich