! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 4 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 0.7494 -41.0 8.504 153.4 0.0154 64.4 0.8920 -7.1 0.020 0.6734 -71.9 6.885 134.9 0.0245 46.9 0.8208 -10.3 0.050 0.5531 -121.1 3.750 107.1 0.0323 27.3 0.7229 -10.4 0.100 0.5191 -147.6 1.994 89.6 0.0342 21.7 0.6907 -10.6 0.150 0.5244 -157.8 1.347 79.4 0.0346 23.1 0.6804 -12.4 0.200 0.5307 -163.9 1.010 70.9 0.0349 26.5 0.6722 -14.9 0.250 0.5452 -168.1 0.805 63.8 0.0352 31.3 0.6659 -17.5 0.300 0.5574 -171.7 0.665 57.5 0.0356 36.4 0.6578 -20.0 0.400 0.5803 -177.5 0.487 47.0 0.0380 48.5 0.6426 -25.5 0.500 0.6025 177.7 0.376 38.9 0.0431 60.3 0.6263 -30.8 0.600 0.6202 172.7 0.299 33.6 0.0510 70.5 0.6087 -36.1 0.700 0.6373 167.9 0.246 30.3 0.0623 77.7 0.5907 -41.2 0.800 0.6537 163.4 0.206 29.2 0.0754 82.2 0.5727 -46.3 0.900 0.6648 159.1 0.178 30.9 0.0905 84.5 0.5545 -51.4 1.000 0.6747 154.8 0.158 36.0 0.1073 85.5 0.5366 -56.4 1.100 0.6888 150.5 0.146 42.3 0.1251 85.6 0.5195 -61.4 1.200 0.6970 146.5 0.143 50.2 0.1434 84.8 0.5024 -66.3 1.300 0.7002 142.5 0.150 56.3 0.1621 83.6 0.4848 -71.3 1.400 0.7048 139.1 0.164 60.9 0.1815 82.0 0.4692 -76.1 1.500 0.7091 135.4 0.178 64.6 0.2004 80.2 0.4532 -80.9 1.600 0.7119 132.0 0.195 66.6 0.2194 78.1 0.4373 -85.9 1.700 0.7105 128.5 0.212 66.5 0.2382 76.0 0.4232 -90.7 1.800 0.7138 125.5 0.233 68.4 0.2569 73.8 0.4089 -95.5 1.900 0.7129 122.5 0.250 67.0 0.2758 71.7 0.3948 -100.3 2.000 0.7138 118.9 0.272 66.4 0.2933 69.4 0.3837 -105.0 2.200 0.7081 112.9 0.309 62.7 0.3280 64.9 0.3603 -114.6 2.400 0.7042 107.5 0.342 59.2 0.3606 60.2 0.3409 -123.9 2.600 0.7010 102.4 0.377 55.0 0.3901 55.8 0.3251 -133.4 2.800 0.6950 97.8 0.407 51.3 0.4178 51.5 0.3131 -142.6 3.000 0.6889 93.5 0.432 47.6 0.4412 47.3 0.3025 -151.9 ! ! SIEMENS AG Semiconductor Group, Munich