! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 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 0.9752 -3.9 1.827 176.9 0.0030 88.9 0.9995 -0.7 0.020 0.9680 -7.8 1.817 173.9 0.0061 83.3 0.9975 -1.2 0.050 0.9553 -19.0 1.774 164.7 0.0146 79.0 0.9962 -3.2 0.100 0.9128 -36.4 1.666 151.1 0.0274 69.2 0.9854 -6.1 0.150 0.8663 -52.2 1.548 139.3 0.0375 61.0 0.9741 -8.8 0.200 0.8148 -66.3 1.420 128.3 0.0447 54.7 0.9622 -11.3 0.250 0.7716 -79.3 1.306 118.6 0.0499 49.4 0.9506 -13.5 0.300 0.7367 -90.6 1.202 110.1 0.0531 45.6 0.9380 -15.5 0.400 0.6789 -109.9 1.017 95.7 0.0553 41.2 0.9214 -19.7 0.500 0.6464 -125.6 0.875 83.6 0.0549 40.5 0.9060 -23.6 0.600 0.6238 -138.6 0.764 73.7 0.0531 43.8 0.8934 -27.7 0.700 0.6125 -149.6 0.676 65.0 0.0517 50.9 0.8793 -31.6 0.800 0.6100 -159.0 0.605 57.6 0.0527 60.2 0.8679 -35.7 0.900 0.6087 -167.1 0.542 51.2 0.0571 70.5 0.8557 -39.9 1.000 0.6106 -174.5 0.492 45.7 0.0654 79.3 0.8419 -44.1 1.100 0.6162 178.4 0.447 41.1 0.0775 86.0 0.8289 -48.4 1.200 0.6257 172.0 0.408 37.6 0.0922 89.9 0.8156 -52.5 1.300 0.6264 166.4 0.367 35.0 0.1090 91.9 0.8000 -56.9 1.400 0.6340 161.0 0.341 33.7 0.1276 92.7 0.7851 -61.1 1.500 0.6428 155.8 0.314 32.7 0.1469 92.4 0.7700 -65.4 1.600 0.6432 151.1 0.292 33.6 0.1672 91.3 0.7531 -69.8 1.700 0.6485 146.3 0.272 34.1 0.1882 89.9 0.7372 -74.1 1.800 0.6546 142.0 0.256 37.4 0.2102 88.0 0.7209 -78.5 1.900 0.6571 137.9 0.250 39.2 0.2321 86.0 0.7015 -82.8 2.000 0.6612 133.5 0.244 43.7 0.2530 83.8 0.6855 -87.1 2.200 0.6664 125.6 0.259 48.3 0.2959 78.9 0.6513 -95.8 2.400 0.6665 118.4 0.279 52.3 0.3376 73.7 0.6177 -104.4 2.600 0.6678 111.9 0.314 53.6 0.3757 68.5 0.5855 -113.0 2.800 0.6697 106.2 0.347 53.0 0.4115 63.3 0.5564 -121.5 3.000 0.6635 100.4 0.382 52.1 0.4440 58.2 0.5274 -130.0 ! ! SIEMENS AG Semiconductor Group, Munich