! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3.5 V IC = 1 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 0.9528 -5.5 3.470 175.9 0.0022 89.4 0.9988 -0.7 0.020 0.9467 -11.2 3.440 171.8 0.0046 82.9 0.9986 -1.2 0.050 0.9185 -27.0 3.288 160.1 0.0109 75.3 0.9930 -3.0 0.100 0.8480 -50.6 2.935 143.7 0.0189 64.2 0.9787 -5.5 0.150 0.7791 -70.6 2.582 130.4 0.0241 56.0 0.9630 -7.7 0.200 0.7171 -87.0 2.253 119.2 0.0274 51.0 0.9516 -9.4 0.250 0.6740 -101.2 1.982 109.9 0.0293 48.1 0.9428 -11.1 0.300 0.6422 -112.7 1.759 102.3 0.0303 47.0 0.9338 -12.5 0.400 0.6036 -130.9 1.416 90.0 0.0306 48.9 0.9242 -15.8 0.500 0.5873 -144.4 1.178 79.7 0.0307 55.5 0.9170 -19.0 0.600 0.5798 -155.5 1.003 71.0 0.0316 66.4 0.9093 -22.4 0.700 0.5798 -164.3 0.873 63.6 0.0354 78.3 0.9030 -25.7 0.800 0.5846 -172.2 0.771 56.8 0.0411 88.3 0.8972 -29.1 0.900 0.5906 -178.8 0.686 50.9 0.0502 96.3 0.8903 -32.7 1.000 0.5972 174.9 0.614 45.6 0.0615 101.3 0.8831 -36.3 1.100 0.6056 169.1 0.556 40.7 0.0751 104.5 0.8766 -40.1 1.200 0.6191 163.8 0.501 36.9 0.0899 105.8 0.8680 -43.7 1.300 0.6225 158.9 0.451 33.7 0.1065 105.9 0.8584 -47.5 1.400 0.6333 154.3 0.414 31.7 0.1248 105.4 0.8501 -51.2 1.500 0.6446 149.5 0.377 29.6 0.1434 104.1 0.8397 -55.1 1.600 0.6493 145.0 0.345 29.0 0.1629 102.4 0.8275 -59.1 1.700 0.6587 141.0 0.312 28.7 0.1839 100.5 0.8162 -63.0 1.800 0.6641 136.9 0.287 30.2 0.2047 98.2 0.8037 -67.0 1.900 0.6708 133.2 0.268 32.8 0.2264 95.9 0.7882 -70.9 2.000 0.6755 129.1 0.251 37.2 0.2477 93.4 0.7754 -74.9 2.200 0.6813 121.5 0.244 44.0 0.2912 88.1 0.7449 -83.0 2.400 0.6875 114.6 0.253 50.5 0.3340 82.5 0.7139 -91.0 2.600 0.6854 108.0 0.286 54.8 0.3748 76.8 0.6817 -99.1 2.800 0.6848 102.2 0.321 56.3 0.4137 71.3 0.6519 -107.1 3.000 0.6805 96.2 0.358 56.3 0.4487 65.8 0.6196 -115.2 ! ! SIEMENS AG Semiconductor Group, Munich