! SIEMENS Small Signal Semiconductors ! BFR181W ! Si NPN RF Bipolar Junction Transistor in SOT323 ! VCE = 2 V IC = 2 mA ! Common Emitter S-Parameters: September 1992 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.100 0.9314 -11.7 6.301 170.1 0.0180 82.7 0.9872 -5.4 0.150 0.9207 -17.4 6.238 164.9 0.0268 79.6 0.9772 -8.0 0.200 0.9018 -22.9 6.142 160.2 0.0350 76.8 0.9645 -10.5 0.250 0.8781 -28.5 6.021 155.5 0.0430 73.5 0.9485 -12.9 0.300 0.8592 -33.6 5.872 151.1 0.0502 70.7 0.9318 -15.1 0.400 0.8042 -43.8 5.578 142.2 0.0629 65.9 0.8929 -19.0 0.500 0.7525 -53.0 5.232 134.6 0.0739 61.4 0.8526 -22.3 0.600 0.6972 -61.8 4.896 127.6 0.0830 58.1 0.8143 -25.0 0.700 0.6457 -70.0 4.559 121.1 0.0904 55.2 0.7788 -27.2 0.800 0.6019 -77.6 4.260 115.5 0.0964 53.1 0.7472 -29.0 0.900 0.5577 -84.4 3.963 110.5 0.1018 51.4 0.7194 -30.4 1.000 0.5264 -91.2 3.718 105.9 0.1063 50.1 0.6949 -31.7 1.200 0.4623 -103.4 3.266 97.7 0.1139 48.6 0.6543 -33.8 1.400 0.4154 -115.2 2.919 90.6 0.1198 48.1 0.6249 -35.4 1.500 0.3993 -120.4 2.770 87.5 0.1227 48.3 0.6127 -36.2 1.600 0.3813 -125.7 2.637 84.3 0.1262 48.4 0.6033 -36.9 1.800 0.3585 -136.1 2.406 78.8 0.1319 49.3 0.5866 -38.5 2.000 0.3387 -146.2 2.212 73.7 0.1378 50.4 0.5759 -40.1 2.200 0.3230 -154.7 2.047 69.0 0.1447 51.8 0.5693 -41.7 2.400 0.3188 -162.8 1.918 64.7 0.1520 53.1 0.5641 -43.7 2.500 0.3088 -167.9 1.851 62.4 0.1560 53.7 0.5622 -44.4 3.000 0.3145 173.8 1.609 52.8 0.1787 56.8 0.5582 -49.9 3.500 0.3188 158.7 1.435 44.5 0.2085 58.7 0.5563 -56.4 4.000 0.3463 144.0 1.304 36.3 0.2409 59.3 0.5528 -63.2 4.500 0.3654 131.7 1.192 29.8 0.2766 58.9 0.5468 -71.1 5.000 0.3950 122.5 1.113 23.3 0.3165 57.8 0.5413 -78.6 5.500 0.4135 112.8 1.032 17.6 0.3612 56.2 0.5403 -86.4 6.000 0.4275 104.3 0.963 13.0 0.4109 53.5 0.5472 -94.2 ! ! 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