! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 5 V IC = 1 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 0.9631 -0.9 3.492 179.4 0.0016 93.9 0.9978 -0.3 0.020 0.9579 -1.6 3.412 178.4 0.0034 87.3 0.9907 -0.7 0.050 0.9611 -3.9 3.453 176.3 0.0085 88.9 0.9979 -1.8 0.100 0.9544 -7.8 3.492 172.6 0.0172 85.9 0.9958 -3.6 0.150 0.9527 -11.5 3.416 167.9 0.0255 81.8 0.9914 -5.6 0.200 0.9418 -15.4 3.450 164.3 0.0334 79.6 0.9840 -7.3 0.250 0.9301 -19.4 3.449 160.2 0.0416 77.2 0.9788 -9.1 0.300 0.9166 -23.3 3.352 156.5 0.0495 75.1 0.9706 -10.8 0.400 0.8882 -30.3 3.264 149.9 0.0635 70.6 0.9526 -14.0 0.500 0.8393 -37.8 3.172 141.7 0.0761 66.3 0.9296 -17.1 0.600 0.8050 -44.8 3.066 135.5 0.0877 62.3 0.9051 -19.8 0.700 0.7649 -50.8 2.933 129.4 0.0971 59.1 0.8810 -22.3 0.800 0.7183 -57.5 2.796 123.3 0.1063 55.7 0.8568 -24.5 0.900 0.6711 -63.2 2.699 117.4 0.1140 53.5 0.8355 -26.4 1.000 0.6264 -69.4 2.608 112.2 0.1195 51.2 0.8120 -28.3 1.100 0.5838 -75.7 2.513 107.4 0.1247 49.3 0.7905 -30.0 1.200 0.5451 -81.4 2.405 102.5 0.1290 47.7 0.7719 -31.7 1.300 0.5139 -87.1 2.301 98.3 0.1331 46.6 0.7536 -32.9 1.400 0.4767 -92.1 2.195 94.1 0.1351 45.4 0.7368 -34.5 1.500 0.4443 -97.5 2.126 90.4 0.1385 45.0 0.7221 -35.5 1.600 0.4128 -104.5 2.028 86.0 0.1422 44.4 0.7107 -36.7 1.700 0.3792 -110.3 1.977 82.3 0.1445 44.4 0.6967 -37.9 1.800 0.3466 -117.4 1.921 78.6 0.1479 44.3 0.6866 -39.0 1.900 0.3255 -124.2 1.868 75.0 0.1498 44.6 0.6751 -40.3 2.000 0.3043 -130.8 1.800 71.5 0.1530 44.9 0.6666 -41.3 2.200 0.2751 -144.5 1.679 65.3 0.1589 45.6 0.6496 -44.0 2.400 0.2478 -161.1 1.606 59.1 0.1663 47.1 0.6313 -46.5 2.600 0.2423 -177.9 1.513 53.7 0.1757 48.1 0.6180 -49.2 2.800 0.2401 166.0 1.455 48.6 0.1865 49.5 0.6056 -52.3 3.000 0.2573 153.5 1.382 43.2 0.1977 50.5 0.5920 -55.6 3.500 0.3124 126.9 1.240 32.0 0.2363 51.7 0.5662 -66.0 4.000 0.3734 110.3 1.133 21.7 0.2869 50.9 0.5356 -79.5 4.500 0.4351 98.8 1.051 13.0 0.3456 47.5 0.5074 -95.5 5.000 0.4836 89.9 0.973 4.8 0.4077 42.2 0.4857 -113.7 5.500 0.5259 82.2 0.894 -1.8 0.4688 35.3 0.4656 -133.5 6.000 0.5576 75.6 0.840 -8.0 0.5238 27.4 0.4564 -153.6 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.30 0.70 18 0.50 0.900 1.40 0.60 39 0.52 1.800 1.85 0.40 81 0.47 ! ! SIEMENS AG Semiconductor Group, Munich