! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 V IC = 20 mA ! Common Emitter S-Parameters: January 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.6851 -155.5 5.395 106.5 0.0155 25.2 0.6116 -10.6 0.020 0.7255 -167.7 2.838 90.5 0.0169 20.9 0.5788 -9.1 0.050 0.7429 -175.6 1.111 67.8 0.0186 24.9 0.5527 -11.4 0.100 0.7517 -179.6 0.481 42.2 0.0219 34.2 0.5123 -17.5 0.150 0.7600 177.7 0.261 25.1 0.0253 42.2 0.4715 -21.8 0.200 0.7644 175.2 0.154 15.9 0.0287 48.9 0.4389 -24.5 0.250 0.7708 173.1 0.100 17.2 0.0324 55.0 0.4146 -26.4 0.300 0.7741 170.8 0.073 25.5 0.0366 59.9 0.3964 -27.9 0.400 0.7762 166.6 0.059 48.6 0.0460 67.5 0.3732 -31.1 0.500 0.7789 162.9 0.064 61.9 0.0572 72.4 0.3570 -34.7 0.600 0.7799 159.0 0.074 70.0 0.0694 75.7 0.3437 -38.6 0.700 0.7818 155.2 0.089 74.4 0.0831 77.6 0.3315 -42.7 0.800 0.7864 151.5 0.098 74.9 0.0968 78.3 0.3205 -46.9 0.900 0.7868 148.1 0.114 76.2 0.1116 78.5 0.3100 -51.3 1.000 0.7871 144.7 0.130 76.4 0.1269 78.3 0.2999 -55.8 1.100 0.7877 141.1 0.145 76.3 0.1424 77.6 0.2900 -60.4 1.200 0.7925 137.6 0.160 75.4 0.1584 76.6 0.2806 -65.1 1.300 0.7891 134.6 0.176 74.7 0.1748 75.4 0.2712 -69.8 1.400 0.7872 131.2 0.198 73.6 0.1914 74.1 0.2629 -74.6 1.500 0.7867 128.4 0.212 71.6 0.2075 72.5 0.2549 -79.4 1.600 0.7813 125.3 0.229 70.5 0.2238 70.8 0.2467 -84.4 1.700 0.7809 122.2 0.240 67.8 0.2401 69.1 0.2399 -89.4 1.800 0.7776 119.5 0.258 67.5 0.2564 67.4 0.2330 -94.3 1.900 0.7744 116.9 0.274 65.2 0.2724 65.7 0.2263 -99.5 2.000 0.7691 113.8 0.290 64.4 0.2880 63.8 0.2214 -104.5 2.200 0.7615 108.4 0.319 59.5 0.3189 60.1 0.2119 -114.9 2.400 0.7520 103.4 0.345 56.3 0.3481 56.2 0.2049 -125.3 2.600 0.7459 98.6 0.377 52.3 0.3743 52.4 0.2006 -135.6 2.800 0.7364 94.1 0.403 48.5 0.3997 48.7 0.1992 -145.9 3.000 0.7301 90.2 0.422 45.3 0.4228 45.1 0.1994 -155.8 ! ! SIEMENS AG Semiconductor Group, Munich