! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 25 V IC = 0.5 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 0.9775 -3.4 1.798 177.3 0.0013 90.8 0.9979 -0.2 0.020 0.9722 -6.9 1.792 174.8 0.0026 83.6 0.9991 -0.7 0.050 0.9603 -16.8 1.760 166.9 0.0063 80.9 0.9991 -1.6 0.100 0.9219 -32.3 1.667 155.1 0.0119 72.5 0.9937 -3.2 0.150 0.8812 -46.8 1.568 144.8 0.0167 66.2 0.9902 -4.6 0.200 0.8308 -59.9 1.456 135.0 0.0202 60.2 0.9857 -5.9 0.250 0.7899 -72.1 1.358 126.2 0.0227 55.9 0.9812 -7.2 0.300 0.7529 -82.9 1.257 118.4 0.0244 52.6 0.9750 -8.3 0.400 0.6886 -102.1 1.078 105.2 0.0255 49.8 0.9694 -10.7 0.500 0.6500 -117.9 0.936 94.1 0.0252 50.1 0.9655 -13.0 0.600 0.6202 -131.4 0.819 84.7 0.0239 56.1 0.9613 -15.3 0.700 0.6056 -143.0 0.728 76.5 0.0234 67.0 0.9589 -17.7 0.800 0.5969 -153.2 0.652 69.2 0.0245 80.7 0.9571 -20.0 0.900 0.5954 -162.0 0.589 62.5 0.0279 94.1 0.9546 -22.6 1.000 0.5930 -170.1 0.536 56.7 0.0341 105.0 0.9537 -25.0 1.100 0.5974 -177.6 0.487 51.6 0.0426 112.6 0.9528 -27.6 1.200 0.6059 175.4 0.445 47.2 0.0528 116.7 0.9514 -30.2 1.300 0.6101 169.7 0.402 43.2 0.0651 119.2 0.9481 -33.0 1.400 0.6181 164.1 0.372 40.7 0.0783 120.1 0.9469 -35.7 1.500 0.6265 158.3 0.340 37.5 0.0928 120.0 0.9446 -38.3 1.600 0.6308 153.5 0.310 35.3 0.1086 118.9 0.9406 -41.3 1.700 0.6400 148.3 0.279 34.2 0.1252 117.9 0.9382 -44.2 1.800 0.6475 143.7 0.252 35.1 0.1427 116.2 0.9341 -47.0 1.900 0.6555 139.5 0.232 35.5 0.1614 114.3 0.9277 -50.1 2.000 0.6621 134.8 0.211 39.6 0.1806 112.1 0.9233 -53.2 2.200 0.6736 126.6 0.190 45.7 0.2207 107.5 0.9089 -59.4 2.400 0.6832 118.7 0.185 57.4 0.2633 102.2 0.8936 -65.8 2.600 0.6928 111.1 0.209 66.3 0.3056 96.8 0.8736 -72.3 2.800 0.6979 104.2 0.243 72.2 0.3481 91.4 0.8528 -78.9 3.000 0.6961 97.8 0.288 73.8 0.3893 85.8 0.8273 -85.6 ! ! SIEMENS AG Semiconductor Group, Munich