! SIEMENS Discrete & RF Semiconductors ! BFY181 ! Si NPN RF Bipolar Junction Transistor in MICRO-X ! VCE = 2.5 V IC = 2.5 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 0.9146 -1.1 7.628 179.3 0.0013 80.2 0.9938 -0.5 0.020 0.9120 -2.4 7.815 178.1 0.0028 95.8 0.9999 -1.1 0.050 0.9088 -6.0 7.668 175.6 0.0067 85.8 0.9936 -2.6 0.100 0.9122 -11.9 7.610 171.2 0.0133 83.2 0.9895 -5.3 0.150 0.9059 -18.3 7.593 166.7 0.0196 80.0 0.9838 -7.8 0.200 0.8953 -23.8 7.423 162.2 0.0259 76.5 0.9734 -10.3 0.250 0.8794 -29.6 7.270 158.2 0.0316 74.0 0.9630 -12.8 0.300 0.8648 -35.3 7.228 153.5 0.0375 69.8 0.9480 -15.0 0.400 0.8345 -46.1 6.878 145.6 0.0476 64.1 0.9163 -19.3 0.500 0.8019 -56.3 6.499 138.2 0.0562 58.5 0.8828 -23.0 0.600 0.7663 -65.8 6.119 131.3 0.0632 54.3 0.8482 -26.2 0.700 0.7381 -74.5 5.764 125.7 0.0693 49.8 0.8174 -29.0 0.800 0.7031 -82.7 5.378 119.9 0.0740 46.3 0.7858 -31.5 0.900 0.6788 -90.0 5.073 115.1 0.0780 43.1 0.7587 -33.8 1.000 0.6516 -96.8 4.741 110.4 0.0817 40.2 0.7350 -35.7 1.100 0.6359 -102.9 4.464 106.3 0.0842 38.3 0.7144 -37.4 1.200 0.6170 -108.9 4.210 102.1 0.0875 36.2 0.6975 -39.1 1.300 0.6033 -114.6 3.969 98.6 0.0891 34.7 0.6801 -40.5 1.400 0.5896 -120.1 3.764 94.7 0.0904 33.3 0.6667 -42.0 1.500 0.5746 -125.0 3.579 91.4 0.0924 31.7 0.6546 -43.4 1.600 0.5701 -129.0 3.397 88.5 0.0932 31.2 0.6442 -44.8 1.700 0.5604 -133.4 3.245 85.3 0.0942 30.2 0.6320 -46.1 1.800 0.5518 -137.5 3.078 82.8 0.0952 29.6 0.6252 -47.3 1.900 0.5464 -140.4 2.948 80.1 0.0959 28.7 0.6206 -48.6 2.000 0.5417 -144.4 2.829 77.2 0.0979 28.3 0.6161 -49.8 2.200 0.5279 -150.9 2.616 72.1 0.0992 27.2 0.6071 -52.5 2.400 0.5223 -156.5 2.404 67.7 0.1008 26.7 0.6015 -55.0 2.600 0.5150 -161.7 2.256 63.1 0.1023 26.8 0.5967 -57.4 2.800 0.5126 -166.6 2.111 59.2 0.1047 26.5 0.5963 -59.9 3.000 0.5092 -171.7 1.989 54.8 0.1063 26.4 0.5948 -62.5 3.500 0.4982 177.8 1.750 45.4 0.1125 26.7 0.5979 -68.8 4.000 0.4949 168.2 1.565 36.2 0.1193 26.5 0.6057 -75.7 4.500 0.4918 158.5 1.417 27.4 0.1278 26.6 0.6156 -82.9 5.000 0.4853 149.5 1.291 19.1 0.1370 26.5 0.6266 -90.4 5.500 0.4874 139.8 1.187 10.6 0.1477 25.9 0.6354 -98.2 6.000 0.4959 130.6 1.100 3.2 0.1597 24.5 0.6414 -106.0 ! ! SIEMENS AG Semiconductor Group, Munich