! SIEMENS Small Signal Semiconductors ! BFS481 ! Si NPN RF Bipolar Junction Transistor in SOT363 ! VCE = 3.5 V IC = 5 mA ! Common Emitter S-Parameters: October 1994 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.8489 -1.7 13.438 178.5 0.0012 86.9 0.9911 -0.7 0.020 0.8526 -3.6 13.322 177.0 0.0026 84.9 0.9928 -1.4 0.030 0.8524 -5.2 13.364 175.9 0.0037 85.3 0.9893 -2.1 0.050 0.8474 -8.6 13.393 173.0 0.0063 83.7 0.9863 -3.4 0.100 0.8315 -17.3 13.133 165.7 0.0121 82.8 0.9746 -6.7 0.150 0.7999 -25.3 12.780 158.4 0.0183 76.6 0.9530 -9.7 0.200 0.7684 -32.9 12.258 152.1 0.0234 74.3 0.9261 -12.2 0.250 0.7283 -40.3 11.680 146.1 0.0279 70.9 0.8988 -14.4 0.300 0.6876 -47.1 11.062 140.3 0.0319 68.2 0.8702 -16.2 0.400 0.6115 -59.0 9.914 130.9 0.0391 64.5 0.8144 -18.9 0.500 0.5425 -69.3 8.823 123.0 0.0447 61.9 0.7683 -20.5 0.600 0.4840 -78.6 7.873 116.4 0.0499 60.4 0.7289 -21.6 0.700 0.4354 -87.2 7.029 111.0 0.0541 59.7 0.6986 -22.1 0.800 0.3941 -94.6 6.424 106.1 0.0582 59.8 0.6731 -22.6 0.900 0.3586 -101.7 5.851 102.0 0.0622 59.6 0.6531 -23.0 1.000 0.3331 -109.0 5.363 98.3 0.0663 59.8 0.6361 -23.3 1.100 0.3125 -115.5 4.946 94.7 0.0703 59.9 0.6230 -23.6 1.200 0.2947 -121.8 4.596 91.5 0.0741 60.0 0.6109 -24.0 1.300 0.2796 -128.3 4.303 88.9 0.0777 60.8 0.6011 -24.4 1.400 0.2663 -134.2 4.018 86.0 0.0820 61.2 0.5928 -24.9 1.500 0.2592 -140.7 3.797 83.3 0.0860 61.5 0.5843 -25.4 1.600 0.2543 -146.1 3.581 80.8 0.0901 61.8 0.5782 -26.0 1.700 0.2500 -150.6 3.409 78.6 0.0940 62.0 0.5715 -26.6 1.800 0.2471 -156.6 3.231 76.1 0.0988 62.1 0.5660 -27.2 1.900 0.2453 -161.8 3.073 73.8 0.1030 62.4 0.5605 -28.0 2.000 0.2444 -165.7 2.947 71.8 0.1075 62.5 0.5570 -28.8 2.200 0.2468 -174.2 2.710 67.5 0.1162 62.5 0.5474 -30.4 2.400 0.2492 178.3 2.519 63.6 0.1256 62.4 0.5403 -32.3 2.600 0.2538 170.9 2.352 59.7 0.1355 62.2 0.5325 -34.2 2.800 0.2593 164.8 2.199 55.8 0.1447 61.5 0.5262 -36.4 3.000 0.2686 159.2 2.078 52.1 0.1546 61.1 0.5191 -38.6 3.200 0.2786 153.8 1.973 48.7 0.1650 60.6 0.5135 -41.0 3.400 0.2868 149.3 1.873 45.2 0.1752 59.9 0.5070 -43.6 3.600 0.3004 144.7 1.792 41.7 0.1860 59.1 0.5008 -46.3 3.800 0.3083 141.0 1.707 38.5 0.1954 58.2 0.4913 -49.1 4.000 0.3211 137.9 1.642 35.3 0.2072 57.3 0.4864 -52.0 4.500 0.3474 131.6 1.498 27.1 0.2344 54.3 0.4716 -59.5 5.000 0.3598 125.1 1.364 19.4 0.2640 51.2 0.4701 -66.2 5.500 0.3616 120.9 1.286 10.7 0.3011 46.0 0.4770 -75.1 6.000 0.3549 115.0 1.209 2.3 0.3362 39.8 0.4858 -83.3 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.55 0.48 17 0.36 0.900 1.65 0.40 35 0.34 1.800 2.00 0.18 88 0.34 ! ! SIEMENS AG Semiconductor Group, Munich