! SIEMENS Small Signal Semiconductors ! BFQ81 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3.5 V IC = 5 mA ! Common Emitter S-Parameters: August 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.8627 -3.6 15.277 176.1 0.0027 93.7 0.9915 -1.7 0.020 0.8495 -7.1 15.122 174.3 0.0057 87.0 0.9848 -3.5 0.050 0.8326 -17.6 14.662 165.5 0.0144 80.7 0.9721 -8.3 0.100 0.7864 -34.6 13.779 153.5 0.0275 72.7 0.9227 -15.7 0.150 0.7150 -49.4 12.513 141.5 0.0378 66.0 0.8529 -21.6 0.200 0.6569 -62.4 11.358 132.9 0.0458 61.5 0.7875 -25.4 0.250 0.5940 -74.4 10.187 124.7 0.0523 57.7 0.7237 -28.6 0.300 0.5389 -84.4 9.111 118.6 0.0575 56.1 0.6740 -30.2 0.400 0.4617 -101.7 7.481 109.1 0.0661 53.9 0.5953 -32.1 0.500 0.4076 -116.4 6.238 101.0 0.0734 53.2 0.5434 -32.6 0.600 0.3736 -128.9 5.389 95.0 0.0806 54.0 0.5084 -33.0 0.700 0.3503 -139.9 4.723 89.6 0.0877 54.4 0.4823 -33.2 0.800 0.3385 -149.7 4.175 85.0 0.0951 55.0 0.4628 -33.4 0.900 0.3234 -158.2 3.756 80.8 0.1028 55.8 0.4495 -33.6 1.000 0.3174 -167.1 3.422 76.9 0.1097 56.5 0.4381 -34.3 1.100 0.3176 -174.9 3.156 73.4 0.1181 56.8 0.4279 -35.2 1.200 0.3170 177.5 2.922 70.0 0.1260 57.5 0.4194 -36.1 1.300 0.3184 172.5 2.707 66.9 0.1343 57.7 0.4122 -36.9 1.400 0.3231 165.7 2.532 63.9 0.1426 57.8 0.4067 -38.2 1.500 0.3224 161.2 2.400 61.1 0.1516 57.9 0.4001 -39.5 1.600 0.3315 155.7 2.253 57.9 0.1603 57.8 0.3930 -40.7 1.700 0.3361 150.6 2.137 55.2 0.1693 57.6 0.3857 -42.1 1.800 0.3445 145.9 2.043 52.6 0.1781 57.2 0.3814 -43.6 1.900 0.3559 141.8 1.956 49.9 0.1880 57.0 0.3758 -45.7 2.000 0.3594 138.3 1.868 47.3 0.1976 56.4 0.3675 -47.4 2.200 0.3790 131.3 1.719 42.4 0.2170 55.5 0.3564 -51.1 2.400 0.3967 124.6 1.609 37.5 0.2370 54.3 0.3385 -55.6 2.600 0.4240 118.3 1.505 33.1 0.2569 52.6 0.3241 -60.1 2.800 0.4425 113.5 1.423 28.9 0.2777 50.8 0.3048 -66.0 3.000 0.4658 108.4 1.342 24.6 0.2984 49.1 0.2902 -71.7 3.500 0.5209 98.9 1.188 15.0 0.3516 43.8 0.2472 -91.8 4.000 0.5768 90.7 1.067 6.3 0.4017 37.3 0.2127 -119.7 4.500 0.6155 83.6 0.964 -1.6 0.4458 30.2 0.2054 -151.0 5.000 0.6498 75.5 0.852 -6.1 0.4687 25.5 0.2034 -165.0 5.500 0.6651 71.2 0.817 -11.6 0.5271 18.3 0.2885 166.5 6.000 0.6824 66.1 0.767 -16.6 0.5621 11.3 0.3413 148.0 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.800 1.25 0.26 77 0.19 2.000 2.25 0.32 178 0.17 ! ! SIEMENS AG Semiconductor Group, Munich