! SIEMENS Small Signal Semiconductors ! BFY450 ! Si NPN RF SIEGET Grounded Emitter Transistor in MICRO-X ! VCE = 1.5 V IC = 4 mA ! Common Emitter S-Parameters: October 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.8198 -3.7 13.294 178.9 0.0032 92.8 0.9929 -2.0 0.020 0.8154 -7.0 13.249 175.5 0.0063 87.7 0.9869 -4.1 0.050 0.8163 -17.1 12.928 169.4 0.0159 79.6 0.9815 -10.2 0.100 0.8140 -33.7 12.569 160.2 0.0315 72.3 0.9550 -20.0 0.150 0.7948 -49.0 11.901 150.1 0.0444 63.3 0.9109 -29.2 0.200 0.7960 -62.5 11.235 142.6 0.0555 56.8 0.8652 -37.2 0.250 0.7827 -75.1 10.397 134.6 0.0645 49.7 0.8094 -44.7 0.300 0.7759 -85.8 9.650 128.1 0.0717 44.5 0.7641 -51.2 0.400 0.7640 -103.4 8.238 117.9 0.0808 35.5 0.6719 -62.2 0.500 0.7540 -116.6 6.978 108.8 0.0867 28.5 0.6023 -70.9 0.600 0.7549 -127.6 6.093 101.8 0.0903 23.4 0.5494 -78.3 0.700 0.7557 -136.0 5.365 95.7 0.0917 19.5 0.5107 -84.9 0.800 0.7528 -142.6 4.726 90.6 0.0929 16.3 0.4777 -90.8 0.900 0.7508 -148.0 4.210 86.3 0.0933 13.9 0.4536 -95.6 1.000 0.7541 -153.2 3.803 82.3 0.0927 11.6 0.4382 -100.2 1.100 0.7593 -158.1 3.480 78.5 0.0924 9.8 0.4262 -104.7 1.200 0.7607 -162.0 3.167 75.2 0.0918 8.6 0.4162 -108.7 1.300 0.7680 -165.0 2.925 72.2 0.0914 7.3 0.4067 -112.3 1.400 0.7657 -168.1 2.694 69.5 0.0899 6.2 0.4046 -115.7 1.500 0.7703 -170.9 2.529 67.0 0.0892 5.8 0.4001 -119.6 1.600 0.7749 -173.8 2.345 64.1 0.0883 5.6 0.3950 -122.7 1.700 0.7778 -176.1 2.204 61.7 0.0871 5.2 0.3925 -125.9 1.800 0.7735 -178.9 2.073 59.6 0.0864 4.8 0.3922 -128.4 1.900 0.7823 179.1 1.968 57.0 0.0857 4.9 0.3965 -131.3 2.000 0.7839 177.0 1.856 54.8 0.0852 4.8 0.3938 -133.8 2.200 0.7877 173.0 1.679 50.6 0.0835 5.5 0.3992 -138.2 2.400 0.7880 169.3 1.543 46.3 0.0825 6.2 0.4046 -142.8 2.600 0.7901 165.9 1.420 42.6 0.0814 7.7 0.4092 -146.7 2.800 0.7950 162.4 1.317 39.0 0.0814 9.1 0.4143 -150.7 3.000 0.7998 159.4 1.235 35.1 0.0817 11.1 0.4230 -153.9 3.500 0.8035 151.3 1.060 26.5 0.0855 15.6 0.4415 -162.6 4.000 0.8141 143.3 0.936 17.9 0.0927 19.5 0.4634 -171.6 4.500 0.8219 135.5 0.838 9.9 0.1034 21.5 0.4872 -180.0 5.000 0.8290 128.0 0.762 1.9 0.1173 22.1 0.5167 170.6 5.500 0.8315 119.6 0.687 -4.9 0.1332 20.7 0.5364 161.4 6.000 0.8480 112.4 0.632 -11.8 0.1491 17.9 0.5657 152.6 ! ! SIEMENS AG Semiconductor Group, Munich