! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 2.5 V IC = 3 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 0.8901 -1.6 9.170 178.7 0.0017 94.5 0.9955 -0.7 0.020 0.8901 -2.8 8.987 176.9 0.0030 87.1 0.9932 -1.4 0.050 0.8879 -7.2 9.114 172.9 0.0084 85.6 0.9908 -3.4 0.100 0.8706 -14.6 9.038 166.0 0.0167 82.3 0.9798 -6.7 0.150 0.8480 -21.5 8.693 158.5 0.0248 77.7 0.9613 -9.8 0.200 0.8106 -28.3 8.528 152.1 0.0316 74.6 0.9380 -12.6 0.250 0.7735 -34.7 8.188 145.9 0.0386 71.2 0.9116 -15.1 0.300 0.7341 -40.4 7.717 140.5 0.0442 69.0 0.8851 -17.2 0.400 0.6496 -50.6 7.023 130.9 0.0546 64.5 0.8346 -20.5 0.500 0.5692 -59.9 6.292 121.7 0.0624 61.6 0.7852 -22.9 0.600 0.5092 -68.4 5.680 114.8 0.0694 59.6 0.7436 -24.6 0.700 0.4473 -74.8 5.153 108.7 0.0757 58.5 0.7129 -25.9 0.800 0.3964 -81.5 4.666 103.1 0.0824 57.7 0.6876 -26.7 0.900 0.3489 -87.5 4.294 98.0 0.0880 57.7 0.6662 -27.5 1.000 0.3079 -94.4 3.980 93.6 0.0928 57.9 0.6475 -28.2 1.100 0.2725 -101.6 3.705 89.6 0.0984 58.0 0.6327 -29.0 1.200 0.2430 -107.7 3.454 85.8 0.1040 58.2 0.6201 -29.8 1.300 0.2200 -113.5 3.219 82.5 0.1095 58.4 0.6094 -30.5 1.400 0.1926 -121.0 3.025 79.3 0.1154 58.7 0.6016 -31.4 1.500 0.1781 -127.0 2.869 76.3 0.1212 59.0 0.5937 -32.2 1.600 0.1596 -138.1 2.701 72.9 0.1277 59.0 0.5879 -33.1 1.700 0.1471 -147.7 2.587 70.1 0.1338 59.3 0.5805 -34.0 1.800 0.1338 -158.4 2.473 67.4 0.1403 59.5 0.5743 -35.1 1.900 0.1327 -167.7 2.374 64.7 0.1473 59.6 0.5687 -36.2 2.000 0.1292 -178.3 2.271 61.9 0.1544 59.6 0.5632 -37.3 2.200 0.1347 164.3 2.094 57.0 0.1681 59.3 0.5530 -40.0 2.400 0.1469 147.2 1.969 52.1 0.1836 59.2 0.5408 -42.5 2.600 0.1707 134.2 1.847 47.8 0.1992 58.4 0.5288 -45.5 2.800 0.1916 125.1 1.753 43.6 0.2157 57.8 0.5171 -48.7 3.000 0.2157 119.1 1.662 39.2 0.2325 56.7 0.5038 -52.2 3.500 0.2869 105.8 1.482 29.3 0.2777 53.6 0.4690 -62.8 4.000 0.3483 97.3 1.354 20.1 0.3269 49.4 0.4311 -76.4 4.500 0.4069 91.1 1.252 11.5 0.3791 44.1 0.3940 -92.5 5.000 0.4626 85.4 1.165 3.3 0.4312 38.2 0.3662 -110.6 5.500 0.5019 79.8 1.070 -4.1 0.4795 31.6 0.3474 -131.3 6.000 0.5460 74.7 1.000 -10.9 0.5263 24.3 0.3425 -152.4 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.40 0.56 17 0.36 0.900 1.50 0.45 35 0.34 1.800 1.85 0.25 82 0.36 ! ! SIEMENS AG Semiconductor Group, Munich