! SIEMENS Small Signal Semiconductors ! BFR181W ! Si NPN RF Bipolar Junction Transistor in SOT323 ! VCE = 2.5 V IC = 2 mA ! Common Emitter S-Parameters: August 1995 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9366 -1.1 6.403 178.8 0.0019 98.7 0.9976 -0.5 0.020 0.9361 -2.6 6.375 178.3 0.0036 97.4 0.9865 -1.0 0.050 0.9371 -5.8 6.350 174.8 0.0093 83.8 0.9931 -2.7 0.100 0.9275 -11.5 6.317 169.8 0.0172 84.4 0.9889 -5.4 0.150 0.9171 -17.0 6.234 164.4 0.0262 79.9 0.9756 -8.0 0.200 0.8983 -23.0 6.177 159.6 0.0343 76.7 0.9649 -10.4 0.250 0.8810 -28.6 6.087 155.0 0.0425 73.7 0.9483 -12.8 0.300 0.8532 -33.2 5.913 150.9 0.0488 70.1 0.9313 -14.9 0.400 0.8038 -43.1 5.551 141.8 0.0616 65.5 0.8916 -18.8 0.500 0.7438 -52.1 5.213 134.2 0.0722 62.0 0.8522 -21.9 0.600 0.6871 -60.9 4.904 127.0 0.0815 58.0 0.8121 -24.7 0.700 0.6354 -68.9 4.549 121.2 0.0890 55.3 0.7772 -26.9 0.800 0.5922 -75.5 4.250 115.2 0.0951 53.5 0.7454 -28.6 0.900 0.5482 -82.6 3.964 110.1 0.1006 51.4 0.7166 -30.1 1.000 0.5035 -89.3 3.692 105.6 0.1048 50.6 0.6918 -31.4 1.100 0.4688 -95.6 3.480 101.0 0.1086 49.1 0.6682 -32.5 1.200 0.4400 -102.5 3.274 96.9 0.1123 48.7 0.6503 -33.7 1.300 0.4144 -108.5 3.112 93.4 0.1162 48.5 0.6336 -34.6 1.400 0.3935 -115.2 2.946 89.9 0.1197 48.4 0.6185 -35.9 1.500 0.3712 -120.9 2.801 86.5 0.1226 48.6 0.6053 -36.7 1.600 0.3477 -126.3 2.645 83.2 0.1255 48.6 0.5966 -37.4 1.700 0.3426 -132.3 2.544 80.2 0.1291 48.8 0.5837 -38.6 1.800 0.3250 -139.3 2.436 77.0 0.1331 49.0 0.5733 -39.5 1.900 0.3131 -144.2 2.332 74.4 0.1364 49.6 0.5685 -40.5 2.000 0.3044 -148.5 2.249 71.9 0.1402 50.0 0.5652 -41.4 2.200 0.2940 -160.0 2.073 66.8 0.1477 51.0 0.5540 -43.4 2.400 0.2860 -169.0 1.927 62.2 0.1554 51.9 0.5476 -45.5 2.600 0.2787 -179.6 1.810 57.7 0.1648 52.8 0.5395 -47.6 2.800 0.2887 172.6 1.720 53.8 0.1744 53.5 0.5396 -50.1 3.000 0.2863 163.1 1.621 49.7 0.1833 54.6 0.5312 -52.1 3.500 0.3105 145.7 1.458 40.7 0.2168 55.6 0.5318 -59.9 4.000 0.3531 130.5 1.312 31.9 0.2474 54.4 0.5149 -68.1 4.500 0.3799 118.4 1.183 23.8 0.2786 53.3 0.5063 -76.2 5.000 0.4138 108.4 1.084 18.2 0.3201 52.6 0.5044 -85.5 5.500 0.4309 101.4 1.007 13.3 0.3634 49.6 0.4909 -94.7 6.000 0.4807 95.2 0.941 8.4 0.4096 46.7 0.4899 -105.3 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.35 0.60 17 0.40 0.900 1.45 0.50 36 0.40 1.800 1.80 0.31 80 0.37 ! ! SIEMENS AG Semiconductor Group, Munich