! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 4 V IC = 7 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 0.7860 -2.3 17.152 177.4 0.0014 84.1 0.9891 -1.0 0.020 0.7841 -4.7 16.893 175.0 0.0032 89.7 0.9868 -2.2 0.050 0.7751 -11.4 16.798 168.5 0.0077 82.6 0.9779 -5.3 0.100 0.7372 -22.6 16.181 157.8 0.0150 79.5 0.9464 -10.1 0.150 0.6833 -32.4 14.962 147.5 0.0215 73.7 0.9038 -14.1 0.200 0.6245 -41.1 13.881 139.1 0.0267 71.8 0.8575 -16.9 0.250 0.5624 -48.8 12.673 131.6 0.0320 68.5 0.8125 -19.1 0.300 0.5093 -55.0 11.524 125.8 0.0360 67.5 0.7740 -20.4 0.400 0.4162 -65.0 9.665 116.4 0.0436 66.0 0.7148 -21.9 0.500 0.3379 -74.2 8.183 108.2 0.0503 65.9 0.6707 -22.5 0.600 0.2884 -81.7 7.121 102.3 0.0573 66.0 0.6392 -22.8 0.700 0.2404 -86.9 6.269 97.3 0.0640 66.4 0.6187 -23.1 0.800 0.2050 -94.0 5.565 92.8 0.0708 66.6 0.6030 -23.4 0.900 0.1706 -98.5 5.022 88.8 0.0776 66.8 0.5915 -23.7 1.000 0.1437 -106.2 4.589 85.2 0.0843 67.3 0.5821 -24.2 1.100 0.1246 -115.6 4.232 82.2 0.0917 67.4 0.5743 -24.9 1.200 0.1027 -125.4 3.915 79.0 0.0988 67.5 0.5673 -25.5 1.300 0.0914 -133.8 3.624 76.3 0.1061 67.4 0.5627 -26.3 1.400 0.0790 -145.4 3.390 73.6 0.1131 67.2 0.5582 -27.3 1.500 0.0701 -156.8 3.202 71.2 0.1208 66.9 0.5543 -28.2 1.600 0.0707 -174.8 3.012 68.3 0.1285 66.6 0.5503 -29.2 1.700 0.0705 171.2 2.858 66.0 0.1360 66.4 0.5449 -30.2 1.800 0.0764 157.7 2.730 63.6 0.1435 66.0 0.5415 -31.4 1.900 0.0850 149.1 2.612 61.3 0.1514 65.7 0.5371 -32.6 2.000 0.0900 139.7 2.491 59.0 0.1596 65.1 0.5339 -33.8 2.200 0.1101 128.4 2.295 54.7 0.1756 64.1 0.5241 -36.6 2.400 0.1316 117.6 2.150 50.3 0.1924 63.1 0.5136 -39.3 2.600 0.1590 112.1 2.017 46.5 0.2095 61.6 0.5016 -42.4 2.800 0.1805 106.4 1.905 42.7 0.2264 60.2 0.4904 -45.7 3.000 0.2054 103.8 1.807 38.7 0.2439 58.7 0.4766 -49.2 3.500 0.2682 97.8 1.608 29.4 0.2892 54.4 0.4384 -59.8 4.000 0.3286 92.7 1.472 20.6 0.3371 49.4 0.3964 -73.0 4.500 0.3878 89.0 1.357 12.2 0.3865 43.8 0.3550 -88.8 5.000 0.4398 84.2 1.267 4.0 0.4346 37.8 0.3226 -106.7 5.500 0.4877 79.9 1.167 -3.6 0.4808 31.2 0.3011 -127.7 6.000 0.5277 74.8 1.091 -10.5 0.5233 24.2 0.2949 -149.4 ! ! SIEMENS AG Semiconductor Group, Munich