! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 1 mA ! Common Emitter S-Parameters: May 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9591 -0.9 3.495 179.5 0.0018 86.6 0.9982 -0.4 0.020 0.9519 -1.8 3.402 178.2 0.0044 86.1 0.9938 -0.9 0.050 0.9581 -4.2 3.462 175.9 0.0105 87.4 0.9964 -2.2 0.100 0.9541 -8.9 3.507 171.8 0.0210 84.1 0.9953 -4.4 0.150 0.9460 -13.0 3.425 166.7 0.0316 80.5 0.9881 -6.7 0.200 0.9331 -17.7 3.452 162.5 0.0414 78.5 0.9809 -8.6 0.250 0.9222 -22.0 3.437 158.3 0.0518 74.9 0.9721 -10.9 0.300 0.9040 -26.1 3.332 154.1 0.0607 73.1 0.9609 -12.8 0.400 0.8699 -34.5 3.239 146.9 0.0779 68.0 0.9389 -16.5 0.500 0.8159 -42.5 3.121 138.3 0.0930 63.4 0.9090 -20.1 0.600 0.7796 -50.2 2.989 131.6 0.1060 58.9 0.8788 -23.3 0.700 0.7356 -57.3 2.850 125.2 0.1170 55.3 0.8503 -26.0 0.800 0.6897 -64.3 2.703 118.8 0.1271 52.2 0.8229 -28.4 0.900 0.6395 -70.7 2.591 112.6 0.1353 49.2 0.7966 -30.5 1.000 0.5921 -77.9 2.489 107.1 0.1408 46.9 0.7685 -32.5 1.100 0.5550 -84.7 2.386 102.1 0.1462 44.9 0.7450 -34.3 1.200 0.5113 -91.1 2.275 97.1 0.1511 43.0 0.7231 -36.2 1.300 0.4814 -97.4 2.172 92.9 0.1549 41.8 0.7034 -37.5 1.400 0.4462 -103.2 2.065 88.6 0.1576 40.6 0.6852 -39.1 1.500 0.4252 -109.5 1.998 84.7 0.1603 40.0 0.6682 -40.2 1.600 0.3945 -116.7 1.902 80.3 0.1634 39.4 0.6565 -41.4 1.700 0.3642 -124.1 1.854 76.6 0.1659 39.1 0.6413 -42.7 1.800 0.3389 -131.8 1.796 72.8 0.1692 39.3 0.6292 -43.8 1.900 0.3248 -139.4 1.743 69.2 0.1710 39.4 0.6163 -45.2 2.000 0.3082 -146.8 1.679 65.8 0.1747 39.5 0.6078 -46.3 2.200 0.2897 -160.8 1.564 59.5 0.1800 39.9 0.5891 -49.3 2.400 0.2767 -177.7 1.493 53.2 0.1875 41.3 0.5690 -52.1 2.600 0.2826 167.8 1.409 47.8 0.1967 42.2 0.5540 -55.1 2.800 0.2908 154.4 1.352 42.6 0.2076 43.3 0.5405 -58.7 3.000 0.3132 144.2 1.284 37.3 0.2189 44.0 0.5243 -62.5 3.500 0.3741 121.8 1.150 26.0 0.2578 44.7 0.4948 -74.6 4.000 0.4314 106.5 1.044 16.1 0.3076 43.6 0.4603 -90.4 4.500 0.4895 95.8 0.964 7.5 0.3634 40.0 0.4343 -109.0 5.000 0.5344 86.7 0.891 0.0 0.4216 34.8 0.4212 -129.4 5.500 0.5742 79.6 0.817 -6.1 0.4762 28.0 0.4149 -151.0 6.000 0.5976 73.2 0.767 -11.3 0.5249 20.5 0.4205 -171.9 ! ! SIEMENS AG Semiconductor Group, Munich