! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 2 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 0.8888 -1.7 9.132 178.7 0.0014 100.5 0.9956 -0.7 0.020 0.8899 -2.8 9.008 177.0 0.0033 85.5 0.9904 -1.4 0.050 0.8854 -7.6 9.137 172.8 0.0084 86.1 0.9904 -3.5 0.100 0.8713 -14.9 9.028 165.9 0.0172 82.3 0.9781 -6.8 0.150 0.8398 -21.9 8.716 158.2 0.0248 77.5 0.9597 -10.0 0.200 0.8098 -28.7 8.509 151.8 0.0322 74.5 0.9352 -12.8 0.250 0.7732 -35.1 8.131 145.6 0.0389 70.8 0.9099 -15.4 0.300 0.7308 -41.0 7.689 140.1 0.0451 68.7 0.8838 -17.5 0.400 0.6451 -51.9 7.004 130.4 0.0552 64.1 0.8302 -20.7 0.500 0.5593 -61.4 6.247 121.2 0.0630 61.5 0.7804 -23.2 0.600 0.5048 -69.2 5.629 114.5 0.0704 59.4 0.7402 -24.8 0.700 0.4417 -76.3 5.105 108.2 0.0767 58.5 0.7097 -26.0 0.800 0.3922 -83.3 4.634 102.6 0.0830 57.4 0.6836 -27.0 0.900 0.3420 -89.7 4.257 97.4 0.0884 57.2 0.6605 -27.7 1.000 0.3027 -96.4 3.938 93.1 0.0936 57.4 0.6427 -28.5 1.100 0.2720 -103.1 3.670 89.2 0.0995 57.7 0.6282 -29.2 1.200 0.2412 -109.9 3.411 85.3 0.1048 58.0 0.6158 -30.0 1.300 0.2189 -115.6 3.181 82.1 0.1109 58.1 0.6062 -30.7 1.400 0.1946 -123.3 2.986 78.8 0.1158 58.3 0.5980 -31.6 1.500 0.1811 -130.2 2.835 75.8 0.1222 58.7 0.5905 -32.4 1.600 0.1643 -140.4 2.676 72.4 0.1289 58.7 0.5844 -33.3 1.700 0.1479 -150.9 2.556 69.5 0.1348 59.1 0.5756 -34.2 1.800 0.1388 -162.3 2.449 66.8 0.1416 59.1 0.5697 -35.3 1.900 0.1390 -171.0 2.349 64.1 0.1485 59.5 0.5643 -36.4 2.000 0.1361 178.5 2.243 61.5 0.1556 59.4 0.5597 -37.6 2.200 0.1420 160.8 2.075 56.4 0.1696 59.1 0.5489 -40.2 2.400 0.1555 145.9 1.946 51.6 0.1850 58.9 0.5368 -42.8 2.600 0.1786 134.0 1.829 47.2 0.2010 58.1 0.5245 -45.9 2.800 0.2022 124.5 1.733 43.0 0.2176 57.5 0.5131 -49.1 3.000 0.2257 118.5 1.645 38.6 0.2341 56.4 0.4996 -52.7 3.500 0.2974 105.7 1.467 28.7 0.2798 53.2 0.4648 -63.5 4.000 0.3568 97.6 1.337 19.5 0.3291 49.0 0.4270 -77.3 4.500 0.4151 91.1 1.237 11.0 0.3814 43.7 0.3891 -93.6 5.000 0.4672 85.0 1.148 2.7 0.4336 37.8 0.3613 -112.0 5.500 0.5131 79.5 1.056 -4.6 0.4821 31.1 0.3451 -133.0 6.000 0.5485 74.0 0.986 -11.4 0.5279 23.9 0.3418 -154.2 ! ! 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