! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.75 V IC = 12 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 0.6358 -4.8 21.786 176.2 0.0015 100.4 0.9569 -1.4 0.020 0.6346 -8.9 21.596 172.4 0.0032 83.7 0.9486 -3.1 0.050 0.6088 -22.3 21.008 161.9 0.0084 80.7 0.9307 -7.7 0.100 0.5428 -42.6 18.740 146.4 0.0156 72.3 0.8649 -13.5 0.150 0.4679 -59.2 16.165 133.6 0.0207 67.7 0.7982 -16.8 0.200 0.4065 -72.4 13.907 124.3 0.0250 67.1 0.7408 -18.3 0.250 0.3558 -84.0 11.997 117.2 0.0295 65.8 0.6978 -19.0 0.300 0.3165 -94.4 10.524 111.7 0.0329 66.4 0.6684 -19.1 0.400 0.2578 -111.6 8.319 103.5 0.0393 67.1 0.6279 -18.9 0.500 0.2267 -126.8 6.809 96.8 0.0461 68.3 0.6026 -18.7 0.600 0.2060 -139.3 5.823 91.8 0.0534 69.0 0.5880 -18.8 0.700 0.1951 -152.3 5.063 87.4 0.0603 69.8 0.5788 -19.3 0.800 0.1879 -162.0 4.460 83.4 0.0680 70.4 0.5717 -19.9 0.900 0.1797 -171.8 3.975 79.8 0.0756 70.8 0.5663 -20.5 1.000 0.1872 178.4 3.615 76.6 0.0828 71.2 0.5616 -21.4 1.100 0.1873 171.2 3.327 73.7 0.0908 71.4 0.5574 -22.4 1.200 0.1914 164.3 3.072 70.8 0.0987 71.4 0.5545 -23.5 1.300 0.1930 158.3 2.845 68.2 0.1067 71.1 0.5513 -24.6 1.400 0.2031 150.7 2.661 65.5 0.1141 71.0 0.5489 -25.9 1.500 0.2029 147.3 2.514 63.1 0.1224 70.5 0.5458 -27.2 1.600 0.2172 141.0 2.361 60.3 0.1306 70.2 0.5430 -28.5 1.700 0.2271 136.8 2.228 57.8 0.1388 69.8 0.5391 -29.8 1.800 0.2350 132.8 2.128 55.6 0.1474 69.4 0.5359 -31.4 1.900 0.2425 129.6 2.037 53.2 0.1560 68.9 0.5326 -33.0 2.000 0.2520 126.3 1.944 50.9 0.1647 68.3 0.5296 -34.5 2.200 0.2695 119.9 1.788 46.5 0.1827 67.1 0.5203 -37.7 2.400 0.2912 113.6 1.674 42.1 0.2009 65.8 0.5098 -41.1 2.600 0.3163 109.1 1.569 38.1 0.2198 64.1 0.4979 -44.8 2.800 0.3381 104.7 1.482 34.4 0.2392 62.5 0.4861 -48.9 3.000 0.3568 101.3 1.402 30.4 0.2583 60.7 0.4717 -53.0 3.500 0.4173 93.4 1.243 21.4 0.3098 55.7 0.4316 -65.7 4.000 0.4651 87.2 1.132 13.2 0.3627 49.9 0.3889 -81.7 4.500 0.5141 81.7 1.035 5.6 0.4171 43.4 0.3499 -100.7 5.000 0.5527 76.1 0.957 -1.5 0.4684 36.4 0.3243 -121.9 5.500 0.5863 71.2 0.882 -7.5 0.5147 29.0 0.3144 -145.1 6.000 0.6094 66.1 0.824 -13.0 0.5561 21.3 0.3216 -168.1 ! ! SIEMENS AG Semiconductor Group, Munich