! SIEMENS Small Signal Semiconductors ! BFR181W ! Si NPN RF Bipolar Junction Transistor in SOT323 ! VCE = 3 V IC = 1 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 0.9682 -8.0 3.380 173.1 0.0178 84.6 0.9937 -3.7 0.150 0.9629 -12.0 3.371 169.4 0.0268 82.2 0.9904 -5.5 0.200 0.9534 -15.7 3.354 166.1 0.0353 80.2 0.9853 -7.3 0.250 0.9432 -19.5 3.332 162.5 0.0440 77.7 0.9790 -9.1 0.300 0.9339 -23.1 3.297 159.3 0.0520 75.5 0.9718 -10.8 0.400 0.9058 -30.9 3.240 152.2 0.0672 71.1 0.9534 -14.1 0.500 0.8771 -38.0 3.154 145.8 0.0813 66.6 0.9323 -17.2 0.600 0.8397 -45.1 3.062 139.5 0.0942 62.8 0.9095 -20.0 0.700 0.8059 -52.0 2.957 133.4 0.1049 59.3 0.8853 -22.6 0.800 0.7723 -58.6 2.852 127.8 0.1143 56.2 0.8614 -25.0 0.900 0.7320 -64.9 2.731 122.6 0.1228 53.3 0.8388 -27.0 1.000 0.7022 -70.9 2.631 117.8 0.1293 50.7 0.8161 -29.0 1.200 0.6360 -82.3 2.408 108.5 0.1401 46.3 0.7748 -32.3 1.400 0.5798 -93.4 2.224 100.4 0.1465 43.1 0.7394 -35.0 1.500 0.5566 -98.7 2.142 96.6 0.1487 41.9 0.7234 -36.2 1.600 0.5314 -103.3 2.063 93.0 0.1512 41.1 0.7113 -37.3 1.800 0.4939 -113.5 1.922 86.5 0.1541 40.0 0.6868 -39.4 2.000 0.4619 -122.9 1.793 80.5 0.1557 39.5 0.6700 -41.5 2.200 0.4333 -131.8 1.678 74.9 0.1576 39.8 0.6575 -43.3 2.400 0.4171 -140.9 1.592 70.0 0.1591 40.5 0.6484 -45.4 2.500 0.4017 -145.0 1.540 67.2 0.1605 41.1 0.6450 -46.2 3.000 0.3844 -165.7 1.363 56.3 0.1681 45.6 0.6330 -51.7 3.500 0.3717 175.5 1.227 46.9 0.1856 50.8 0.6277 -58.1 4.000 0.3871 157.7 1.120 38.1 0.2101 55.1 0.6221 -64.8 4.500 0.3982 143.0 1.028 31.2 0.2426 57.8 0.6161 -72.8 5.000 0.4293 131.3 0.957 24.8 0.2842 58.9 0.6096 -80.4 5.500 0.4405 118.8 0.888 19.3 0.3329 58.5 0.6083 -88.4 6.000 0.4587 109.5 0.834 15.1 0.3888 56.3 0.6129 -96.4 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.30 0.70 18 0.50 0.900 1.40 0.60 39 0.52 1.800 1.85 0.40 81 0.47 ! ! SIEMENS AG Semiconductor Group, Munich