! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3 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 0.9747 -3.7 1.824 177.1 0.0023 88.7 0.9988 -0.5 0.020 0.9699 -7.5 1.817 174.2 0.0049 83.7 0.9994 -1.1 0.050 0.9578 -18.4 1.777 165.5 0.0116 79.3 0.9972 -2.6 0.100 0.9143 -35.2 1.672 152.6 0.0217 70.2 0.9899 -5.1 0.150 0.8698 -50.6 1.561 141.3 0.0297 62.8 0.9803 -7.4 0.200 0.8195 -64.5 1.438 130.6 0.0356 56.7 0.9714 -9.4 0.250 0.7779 -77.2 1.328 121.4 0.0400 51.7 0.9617 -11.4 0.300 0.7409 -88.3 1.224 113.2 0.0424 48.2 0.9527 -13.1 0.400 0.6829 -107.9 1.040 99.3 0.0444 44.0 0.9397 -16.7 0.500 0.6494 -123.5 0.898 87.6 0.0439 44.2 0.9295 -20.2 0.600 0.6248 -136.7 0.785 77.8 0.0425 48.4 0.9195 -23.7 0.700 0.6131 -147.7 0.696 69.4 0.0417 56.9 0.9107 -27.2 0.800 0.6072 -157.6 0.622 62.1 0.0429 67.6 0.9020 -30.8 0.900 0.6073 -166.0 0.562 55.7 0.0473 79.1 0.8929 -34.4 1.000 0.6067 -173.5 0.509 50.2 0.0559 88.3 0.8843 -38.2 1.100 0.6136 179.1 0.465 45.3 0.0676 95.0 0.8757 -42.0 1.200 0.6197 172.8 0.424 41.7 0.0816 98.8 0.8661 -45.7 1.300 0.6214 167.3 0.381 38.6 0.0975 100.8 0.8536 -49.5 1.400 0.6313 161.7 0.355 37.1 0.1160 101.2 0.8441 -53.5 1.500 0.6388 156.2 0.326 35.8 0.1344 100.8 0.8322 -57.3 1.600 0.6412 151.4 0.302 35.7 0.1544 99.5 0.8190 -61.3 1.700 0.6485 146.9 0.281 35.7 0.1751 98.0 0.8058 -65.3 1.800 0.6529 142.2 0.261 38.5 0.1964 96.1 0.7918 -69.3 1.900 0.6598 138.0 0.252 40.1 0.2183 93.9 0.7753 -73.4 2.000 0.6620 133.5 0.246 44.9 0.2400 91.5 0.7622 -77.4 2.200 0.6679 125.7 0.248 50.1 0.2839 86.5 0.7303 -85.5 2.400 0.6662 117.9 0.266 54.7 0.3269 80.9 0.6978 -93.6 2.600 0.6709 111.4 0.300 56.9 0.3679 75.5 0.6656 -101.8 2.800 0.6726 105.2 0.336 57.5 0.4066 70.1 0.6354 -109.8 3.000 0.6680 99.6 0.370 56.1 0.4418 64.7 0.6040 -117.9 ! ! SIEMENS AG Semiconductor Group, Munich