! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 1.5 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 0.9271 -8.6 4.968 173.6 0.0043 87.0 0.9954 -1.3 0.020 0.9163 -17.2 4.863 167.4 0.0085 80.5 0.9932 -2.6 0.050 0.8656 -40.2 4.455 151.1 0.0196 68.1 0.9732 -5.9 0.100 0.7646 -71.6 3.657 130.2 0.0311 53.6 0.9318 -9.6 0.150 0.6885 -94.8 2.973 115.3 0.0372 45.8 0.9007 -12.1 0.200 0.6380 -111.9 2.451 103.8 0.0404 41.8 0.8819 -14.2 0.250 0.6109 -124.9 2.067 94.8 0.0419 40.4 0.8684 -16.3 0.300 0.5945 -135.0 1.785 87.3 0.0428 41.0 0.8573 -18.3 0.400 0.5777 -149.9 1.386 75.0 0.0436 44.8 0.8423 -22.6 0.500 0.5780 -160.3 1.129 64.8 0.0453 52.0 0.8289 -27.1 0.600 0.5787 -168.7 0.947 56.0 0.0486 61.3 0.8164 -31.7 0.700 0.5881 -175.7 0.813 48.2 0.0549 70.9 0.8020 -36.4 0.800 0.5981 178.1 0.706 41.2 0.0637 77.8 0.7893 -41.2 0.900 0.6082 172.5 0.620 35.2 0.0754 83.3 0.7745 -46.0 1.000 0.6178 167.3 0.546 30.0 0.0899 86.7 0.7589 -50.8 1.100 0.6281 162.3 0.485 25.5 0.1057 88.8 0.7435 -55.7 1.200 0.6416 157.5 0.430 22.2 0.1237 89.3 0.7279 -60.5 1.300 0.6465 153.3 0.379 20.2 0.1423 89.0 0.7102 -65.6 1.400 0.6563 149.1 0.340 19.8 0.1623 88.2 0.6935 -70.4 1.500 0.6667 144.7 0.303 19.3 0.1820 86.7 0.6747 -75.4 1.600 0.6711 140.8 0.276 21.4 0.2028 84.9 0.6561 -80.3 1.700 0.6785 137.0 0.253 23.9 0.2242 82.9 0.6393 -85.2 1.800 0.6816 133.3 0.233 28.8 0.2448 80.7 0.6201 -90.0 1.900 0.6844 129.4 0.226 33.4 0.2662 78.4 0.6007 -94.9 2.000 0.6884 125.9 0.226 40.1 0.2863 76.0 0.5840 -99.6 2.200 0.6912 119.3 0.245 46.7 0.3267 71.0 0.5492 -109.3 2.400 0.6910 113.0 0.276 50.4 0.3639 65.7 0.5166 -118.6 2.600 0.6886 106.6 0.321 51.5 0.3975 60.7 0.4867 -127.9 2.800 0.6849 101.7 0.359 50.5 0.4289 55.7 0.4618 -137.0 3.000 0.6794 96.6 0.394 48.0 0.4558 51.0 0.4386 -145.9 ! ! SIEMENS AG Semiconductor Group, Munich