! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3.5 V IC = 2 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 0.9097 -8.8 6.408 173.8 0.0022 89.7 0.9982 -0.8 0.020 0.9005 -17.5 6.292 167.8 0.0045 76.8 0.9960 -1.7 0.050 0.8478 -41.5 5.738 151.5 0.0099 68.7 0.9834 -3.8 0.100 0.7432 -73.9 4.642 130.8 0.0156 56.5 0.9569 -6.1 0.150 0.6710 -97.3 3.734 116.7 0.0185 50.2 0.9391 -7.7 0.200 0.6186 -114.6 3.053 106.1 0.0202 48.7 0.9288 -9.2 0.250 0.5940 -127.2 2.565 98.1 0.0209 50.0 0.9210 -10.6 0.300 0.5794 -136.9 2.205 91.5 0.0215 52.0 0.9152 -12.1 0.400 0.5663 -151.3 1.706 80.8 0.0228 61.3 0.9092 -15.2 0.500 0.5644 -161.4 1.387 71.8 0.0252 73.2 0.9037 -18.3 0.600 0.5695 -170.0 1.162 64.1 0.0295 84.7 0.8997 -21.7 0.700 0.5774 -176.7 1.000 57.1 0.0364 94.8 0.8951 -25.1 0.800 0.5885 177.2 0.870 50.8 0.0448 101.0 0.8897 -28.6 0.900 0.6003 171.6 0.768 45.1 0.0558 105.5 0.8846 -32.1 1.000 0.6081 166.6 0.685 39.8 0.0684 107.9 0.8780 -35.8 1.100 0.6208 161.8 0.613 35.2 0.0827 109.2 0.8714 -39.5 1.200 0.6351 157.1 0.548 31.3 0.0984 109.3 0.8646 -43.3 1.300 0.6421 152.7 0.489 27.9 0.1152 108.5 0.8550 -47.1 1.400 0.6548 148.8 0.441 25.9 0.1336 107.3 0.8482 -50.9 1.500 0.6658 144.1 0.398 23.8 0.1526 105.6 0.8379 -54.8 1.600 0.6713 140.6 0.360 22.9 0.1724 103.5 0.8252 -58.8 1.700 0.6804 136.5 0.323 22.6 0.1932 101.3 0.8145 -62.8 1.800 0.6865 132.6 0.289 24.5 0.2144 98.9 0.8018 -66.7 1.900 0.6930 129.2 0.264 26.7 0.2361 96.3 0.7862 -70.8 2.000 0.6998 125.2 0.247 32.3 0.2578 93.7 0.7740 -74.8 2.200 0.7035 118.1 0.233 39.8 0.3011 88.2 0.7430 -82.9 2.400 0.7084 111.6 0.244 48.9 0.3442 82.3 0.7116 -91.0 2.600 0.7039 105.0 0.277 54.2 0.3843 76.6 0.6790 -99.1 2.800 0.7044 99.5 0.316 56.0 0.4227 71.0 0.6490 -107.2 3.000 0.6961 94.1 0.356 56.6 0.4564 65.5 0.6162 -115.3 ! ! SIEMENS AG Semiconductor Group, Munich