! SIEMENS Small Signal Semiconductors ! BFR181W ! Si NPN RF Bipolar Junction Transistor in SOT323 ! VCE = 2 V IC = 10 mA ! Common Emitter S-Parameters: September 1992 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.100 0.6633 -35.1 18.396 153.8 0.0157 73.8 0.9038 -12.7 0.150 0.6080 -50.0 16.671 142.9 0.0220 69.0 0.8461 -17.0 0.200 0.5495 -62.8 14.931 134.0 0.0264 65.5 0.7895 -19.8 0.250 0.5020 -74.3 13.337 127.0 0.0306 62.9 0.7388 -21.6 0.300 0.4620 -83.8 11.925 121.0 0.0341 61.8 0.6990 -22.6 0.400 0.4016 -100.8 9.752 111.7 0.0397 60.9 0.6392 -23.3 0.500 0.3609 -114.1 8.165 105.0 0.0449 61.5 0.6009 -23.3 0.600 0.3363 -125.3 6.998 99.7 0.0506 62.4 0.5748 -23.4 0.700 0.3191 -134.8 6.090 95.1 0.0552 63.9 0.5577 -23.4 0.800 0.3086 -143.1 5.415 91.4 0.0608 65.1 0.5451 -23.7 0.900 0.2981 -150.2 4.842 88.1 0.0666 66.0 0.5362 -23.9 1.000 0.2953 -156.4 4.408 85.0 0.0721 67.0 0.5292 -24.4 1.200 0.2889 -167.3 3.718 79.6 0.0836 68.2 0.5178 -25.7 1.400 0.2919 -176.3 3.227 74.8 0.0951 69.0 0.5115 -27.2 1.500 0.2936 179.9 3.026 72.5 0.1008 69.6 0.5089 -28.2 1.600 0.2954 175.9 2.856 70.4 0.1072 70.0 0.5074 -29.0 1.800 0.3004 169.8 2.567 66.3 0.1194 70.4 0.5042 -31.0 2.000 0.2995 163.3 2.334 62.4 0.1317 70.7 0.5032 -33.3 2.200 0.3065 158.2 2.141 58.8 0.1443 70.7 0.5039 -35.5 2.400 0.3129 154.0 1.992 55.3 0.1578 70.8 0.5046 -38.0 2.500 0.3132 150.5 1.917 53.5 0.1642 70.8 0.5049 -39.0 3.000 0.3389 140.7 1.644 45.6 0.1992 69.9 0.5087 -45.9 3.500 0.3511 131.4 1.455 38.4 0.2380 68.2 0.5105 -53.6 4.000 0.3865 122.6 1.318 31.4 0.2773 65.9 0.5087 -61.3 4.500 0.4105 114.6 1.202 25.5 0.3173 63.1 0.5023 -70.1 5.000 0.4378 108.3 1.109 19.5 0.3591 60.2 0.4961 -78.3 5.500 0.4589 100.3 1.031 14.3 0.4042 57.1 0.4944 -86.6 6.000 0.4735 94.0 0.959 9.9 0.4530 53.3 0.4999 -94.8 ! ! SIEMENS AG Semiconductor Group, Munich