! SIEMENS Discrete & RF Semiconductors ! BFY181 ! Si NPN RF Bipolar Junction Transistor in MICRO-X ! VCE = 4 V IC = 0.8 mA ! Common Emitter S-Parameters: May 1997 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9729 -0.5 2.757 179.7 0.0014 90.2 0.9975 -0.3 0.020 0.9754 -1.3 2.849 178.8 0.0030 89.0 0.9999 -0.7 0.050 0.9750 -3.1 2.787 177.4 0.0065 86.7 0.9978 -1.5 0.100 0.9703 -6.5 2.770 174.6 0.0131 85.5 0.9951 -3.2 0.150 0.9724 -10.1 2.790 171.7 0.0198 83.6 0.9963 -4.7 0.200 0.9686 -13.2 2.759 168.8 0.0262 81.3 0.9936 -6.3 0.250 0.9653 -16.7 2.725 166.2 0.0327 79.3 0.9923 -7.9 0.300 0.9575 -19.9 2.752 163.1 0.0390 77.0 0.9866 -9.4 0.400 0.9470 -26.3 2.721 157.6 0.0514 72.6 0.9798 -12.4 0.500 0.9347 -32.8 2.660 151.9 0.0630 68.6 0.9692 -15.4 0.600 0.9189 -38.7 2.603 146.4 0.0738 64.4 0.9586 -18.2 0.700 0.9045 -45.0 2.559 141.9 0.0838 60.4 0.9457 -21.0 0.800 0.8795 -51.2 2.488 136.6 0.0927 56.8 0.9299 -23.7 0.900 0.8653 -56.7 2.438 132.0 0.1015 53.1 0.9165 -26.2 1.000 0.8454 -61.9 2.357 127.6 0.1089 49.8 0.9013 -28.7 1.100 0.8338 -66.9 2.276 123.3 0.1153 46.6 0.8880 -30.9 1.200 0.8127 -72.5 2.209 118.9 0.1221 43.3 0.8761 -33.3 1.300 0.7945 -77.6 2.143 115.0 0.1270 40.4 0.8614 -35.3 1.400 0.7803 -82.6 2.080 110.7 0.1315 37.7 0.8487 -37.4 1.500 0.7612 -87.4 2.037 106.8 0.1352 35.3 0.8359 -39.3 1.600 0.7453 -91.9 1.970 103.3 0.1386 33.2 0.8246 -41.2 1.700 0.7349 -96.6 1.923 99.7 0.1404 30.7 0.8097 -43.0 1.800 0.7156 -100.7 1.848 96.1 0.1438 28.9 0.8019 -44.6 1.900 0.7105 -104.3 1.792 93.1 0.1454 26.6 0.7942 -46.4 2.000 0.6942 -108.4 1.745 89.3 0.1483 24.9 0.7885 -47.9 2.200 0.6726 -115.6 1.657 83.1 0.1505 21.2 0.7741 -51.3 2.400 0.6518 -122.4 1.538 77.5 0.1516 18.4 0.7613 -54.3 2.600 0.6372 -128.6 1.475 72.0 0.1519 16.0 0.7513 -57.1 2.800 0.6242 -134.2 1.392 67.3 0.1531 13.7 0.7465 -59.9 3.000 0.6138 -140.1 1.330 62.1 0.1518 11.5 0.7398 -62.9 3.500 0.5849 -153.1 1.199 50.5 0.1515 7.8 0.7339 -69.6 4.000 0.5695 -164.8 1.088 40.0 0.1491 4.8 0.7340 -76.7 4.500 0.5594 -176.4 0.998 30.5 0.1467 3.0 0.7390 -84.0 5.000 0.5445 172.7 0.921 21.2 0.1436 2.4 0.7455 -91.6 5.500 0.5399 161.4 0.856 12.1 0.1422 2.8 0.7501 -99.6 6.000 0.5342 150.5 0.794 4.3 0.1429 3.9 0.7514 -107.5 ! ! SIEMENS AG Semiconductor Group, Munich