! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.75 V IC = 2.5 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 0.9078 -1.4 7.751 178.9 0.0016 88.3 0.9963 -0.6 0.020 0.9076 -2.8 7.853 177.1 0.0033 90.9 0.9897 -1.2 0.050 0.9029 -6.9 7.869 173.6 0.0088 87.0 0.9921 -3.2 0.100 0.8891 -13.2 7.678 167.4 0.0174 82.1 0.9828 -6.2 0.150 0.8666 -19.8 7.638 160.0 0.0258 78.3 0.9675 -9.3 0.200 0.8407 -25.8 7.372 154.4 0.0333 75.2 0.9476 -11.9 0.250 0.8089 -32.3 7.122 148.6 0.0408 71.5 0.9270 -14.4 0.300 0.7687 -38.3 6.894 142.8 0.0475 69.5 0.9021 -16.5 0.400 0.6946 -48.7 6.330 133.7 0.0579 64.4 0.8529 -20.1 0.500 0.6236 -57.7 5.675 124.8 0.0670 61.1 0.8075 -22.8 0.600 0.5533 -65.9 5.210 117.6 0.0752 58.7 0.7691 -24.8 0.700 0.4934 -73.4 4.792 111.0 0.0815 57.4 0.7344 -26.3 0.800 0.4396 -80.5 4.376 105.0 0.0874 56.2 0.7052 -27.5 0.900 0.3958 -85.9 4.022 100.0 0.0926 55.5 0.6803 -28.4 1.000 0.3517 -92.6 3.729 95.6 0.0978 55.4 0.6619 -29.3 1.100 0.3183 -99.5 3.485 91.5 0.1035 55.1 0.6464 -30.2 1.200 0.2837 -106.6 3.255 87.3 0.1086 55.1 0.6330 -31.1 1.300 0.2576 -112.3 3.047 83.8 0.1139 55.2 0.6210 -31.9 1.400 0.2287 -119.4 2.872 80.3 0.1193 55.6 0.6120 -32.8 1.500 0.2086 -125.7 2.736 77.1 0.1246 55.9 0.6022 -33.6 1.600 0.1911 -136.2 2.584 73.4 0.1299 56.3 0.5932 -34.5 1.700 0.1759 -144.5 2.468 70.6 0.1359 56.8 0.5841 -35.4 1.800 0.1643 -154.3 2.360 67.9 0.1419 56.8 0.5789 -36.5 1.900 0.1622 -163.0 2.266 65.0 0.1485 57.0 0.5731 -37.6 2.000 0.1589 -172.7 2.166 62.3 0.1551 57.0 0.5682 -38.7 2.200 0.1565 169.4 2.012 57.0 0.1688 57.3 0.5549 -41.3 2.400 0.1674 153.4 1.886 52.0 0.1830 57.2 0.5437 -44.0 2.600 0.1882 139.5 1.778 47.4 0.1990 56.9 0.5297 -46.8 2.800 0.2084 129.9 1.683 43.1 0.2148 56.3 0.5199 -50.2 3.000 0.2327 122.0 1.601 38.6 0.2316 55.6 0.5040 -53.6 3.500 0.3031 107.9 1.426 28.5 0.2772 52.7 0.4699 -64.6 4.000 0.3647 98.4 1.305 19.2 0.3266 48.7 0.4340 -78.6 4.500 0.4265 91.8 1.200 10.6 0.3792 43.6 0.3991 -95.1 5.000 0.4720 85.2 1.114 2.5 0.4328 37.6 0.3710 -113.7 5.500 0.5229 79.2 1.026 -4.9 0.4826 31.0 0.3557 -134.6 6.000 0.5565 73.7 0.957 -11.4 0.5286 23.7 0.3555 -155.8 ! ! SIEMENS AG Semiconductor Group, Munich