! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 8 V IC = 1.2 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 0.9582 -0.8 4.069 179.2 0.0014 97.4 0.9984 -0.4 0.020 0.9573 -1.6 4.023 178.0 0.0033 92.5 0.9906 -0.8 0.050 0.9551 -3.9 4.115 175.9 0.0080 87.2 0.9955 -2.0 0.100 0.9528 -8.1 4.088 172.1 0.0167 84.5 0.9968 -3.9 0.150 0.9415 -12.1 4.066 167.1 0.0248 81.3 0.9876 -5.9 0.200 0.9331 -16.3 4.062 163.2 0.0327 78.9 0.9808 -7.8 0.250 0.9210 -20.3 3.974 159.2 0.0405 76.4 0.9745 -9.7 0.300 0.9061 -24.3 3.907 155.1 0.0479 75.0 0.9642 -11.4 0.400 0.8641 -32.1 3.832 147.9 0.0614 70.2 0.9432 -14.8 0.500 0.8153 -39.4 3.642 139.9 0.0735 66.1 0.9156 -18.0 0.600 0.7804 -46.1 3.470 133.6 0.0848 62.3 0.8900 -20.5 0.700 0.7273 -52.5 3.330 127.3 0.0936 59.0 0.8632 -23.0 0.800 0.6804 -58.9 3.175 121.0 0.1019 56.0 0.8383 -25.0 0.900 0.6330 -64.8 3.040 115.1 0.1084 53.9 0.8111 -26.9 1.000 0.5877 -70.9 2.896 110.2 0.1136 52.0 0.7871 -28.7 1.100 0.5446 -76.8 2.764 105.5 0.1188 50.6 0.7666 -30.3 1.200 0.5088 -81.8 2.626 100.8 0.1232 49.4 0.7486 -31.7 1.300 0.4703 -87.5 2.507 96.8 0.1274 48.2 0.7324 -32.9 1.400 0.4364 -92.3 2.390 92.7 0.1307 47.6 0.7185 -34.2 1.500 0.4072 -97.8 2.313 88.9 0.1342 47.3 0.7032 -35.3 1.600 0.3679 -104.2 2.210 84.5 0.1380 46.8 0.6914 -36.4 1.700 0.3319 -110.2 2.148 80.8 0.1405 47.3 0.6748 -37.3 1.800 0.3065 -116.7 2.073 77.6 0.1443 47.5 0.6649 -38.4 1.900 0.2886 -123.6 2.006 74.3 0.1477 47.8 0.6553 -39.7 2.000 0.2677 -130.1 1.925 70.9 0.1519 47.7 0.6479 -40.7 2.200 0.2344 -144.9 1.810 64.8 0.1596 48.5 0.6310 -43.2 2.400 0.2152 -161.2 1.707 59.0 0.1686 49.7 0.6152 -45.7 2.600 0.2040 179.3 1.623 53.7 0.1798 50.4 0.6007 -48.4 2.800 0.2081 164.4 1.541 48.8 0.1913 51.2 0.5889 -51.4 3.000 0.2241 150.6 1.477 43.6 0.2040 51.7 0.5752 -54.6 3.500 0.2848 124.3 1.323 32.5 0.2430 51.9 0.5459 -64.7 4.000 0.3489 109.1 1.209 22.4 0.2913 50.4 0.5164 -77.9 4.500 0.4124 98.5 1.114 13.4 0.3479 46.7 0.4858 -93.6 5.000 0.4599 90.2 1.043 5.2 0.4073 41.4 0.4600 -111.1 5.500 0.5082 82.8 0.958 -2.1 0.4645 34.8 0.4429 -130.8 6.000 0.5459 76.7 0.891 -8.3 0.5186 27.3 0.4332 -150.9 ! ! SIEMENS AG Semiconductor Group, Munich