! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.75 V IC = 5 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 0.7780 -22.5 12.383 165.5 0.0032 81.4 0.9855 -2.0 0.020 0.7448 -42.6 11.428 153.1 0.0063 70.0 0.9708 -3.7 0.050 0.6570 -86.3 8.489 127.4 0.0113 52.3 0.9219 -6.1 0.100 0.5893 -123.5 5.352 106.1 0.0142 44.0 0.8847 -7.4 0.150 0.5723 -141.4 3.786 94.6 0.0156 46.4 0.8715 -8.7 0.200 0.5688 -151.9 2.900 86.4 0.0168 51.2 0.8662 -10.2 0.250 0.5719 -159.0 2.341 79.8 0.0182 57.3 0.8627 -11.9 0.300 0.5778 -164.2 1.961 74.1 0.0195 63.6 0.8584 -13.8 0.400 0.5896 -172.5 1.466 64.4 0.0236 76.3 0.8539 -17.8 0.500 0.6045 -178.6 1.159 55.6 0.0293 87.1 0.8488 -21.7 0.600 0.6175 176.0 0.950 48.1 0.0377 95.9 0.8415 -26.0 0.700 0.6324 171.0 0.798 41.2 0.0480 101.3 0.8341 -30.1 0.800 0.6508 166.2 0.681 35.0 0.0601 104.4 0.8256 -34.4 0.900 0.6617 161.9 0.585 29.6 0.0742 106.1 0.8148 -38.8 1.000 0.6731 157.4 0.508 25.0 0.0901 106.3 0.8040 -43.2 1.100 0.6877 153.1 0.439 21.1 0.1074 105.9 0.7917 -47.6 1.200 0.7000 148.8 0.380 18.6 0.1258 104.5 0.7791 -52.1 1.300 0.7066 144.9 0.325 17.0 0.1453 102.6 0.7636 -56.6 1.400 0.7174 141.3 0.285 17.3 0.1656 100.5 0.7493 -61.1 1.500 0.7232 137.3 0.249 19.1 0.1861 98.2 0.7323 -65.5 1.600 0.7270 133.3 0.221 23.2 0.2072 95.4 0.7151 -70.1 1.700 0.7318 129.9 0.201 28.0 0.2287 92.7 0.6988 -74.6 1.800 0.7319 126.2 0.189 37.3 0.2498 89.9 0.6804 -79.1 1.900 0.7346 123.1 0.187 43.7 0.2714 87.1 0.6609 -83.5 2.000 0.7359 119.6 0.195 52.4 0.2924 84.3 0.6444 -87.9 2.200 0.7304 112.9 0.230 59.8 0.3331 78.4 0.6080 -96.7 2.400 0.7234 106.6 0.273 62.0 0.3715 72.7 0.5729 -105.2 2.600 0.7247 100.8 0.320 61.0 0.4060 67.1 0.5389 -113.9 2.800 0.7118 96.1 0.364 58.8 0.4380 61.8 0.5103 -122.4 3.000 0.7043 91.1 0.404 55.6 0.4654 56.6 0.4819 -130.8 ! ! SIEMENS AG Semiconductor Group, Munich