! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 V IC = 0.1 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 0.9948 -2.0 0.445 178.0 0.0030 89.4 0.9994 -0.5 0.020 0.9914 -3.9 0.442 175.9 0.0062 86.2 0.9993 -1.0 0.050 0.9883 -9.8 0.437 169.5 0.0148 83.8 0.9992 -2.6 0.100 0.9745 -19.1 0.428 159.4 0.0290 78.2 0.9959 -5.0 0.150 0.9631 -28.3 0.422 150.2 0.0425 72.6 0.9932 -7.5 0.200 0.9409 -37.1 0.413 140.4 0.0546 67.0 0.9894 -10.0 0.250 0.9219 -45.9 0.406 131.3 0.0654 62.1 0.9827 -12.4 0.300 0.9030 -54.1 0.401 122.9 0.0741 57.1 0.9747 -14.6 0.400 0.8568 -70.0 0.383 107.3 0.0870 48.6 0.9614 -19.2 0.500 0.8205 -84.7 0.365 93.4 0.0942 41.8 0.9462 -23.6 0.600 0.7793 -98.2 0.346 81.7 0.0961 36.8 0.9317 -27.9 0.700 0.7512 -110.6 0.328 71.8 0.0942 33.8 0.9165 -32.1 0.800 0.7283 -122.2 0.311 63.4 0.0893 32.6 0.9024 -36.4 0.900 0.7086 -132.5 0.290 56.5 0.0832 34.1 0.8859 -40.6 1.000 0.6966 -142.5 0.272 50.8 0.0776 38.7 0.8708 -44.9 1.100 0.6877 -151.9 0.254 46.6 0.0738 46.8 0.8559 -49.2 1.200 0.6845 -160.8 0.238 44.3 0.0746 56.5 0.8398 -53.5 1.300 0.6766 -168.5 0.223 43.3 0.0805 66.6 0.8228 -57.8 1.400 0.6775 -175.8 0.212 44.0 0.0919 74.8 0.8065 -62.0 1.500 0.6742 176.8 0.201 44.6 0.1071 80.4 0.7899 -66.3 1.600 0.6728 170.7 0.195 47.6 0.1252 83.4 0.7714 -70.7 1.700 0.6722 164.3 0.195 50.0 0.1460 84.8 0.7548 -75.0 1.800 0.6749 158.6 0.195 54.4 0.1674 85.0 0.7364 -79.4 1.900 0.6753 153.0 0.201 57.2 0.1900 84.3 0.7155 -83.7 2.000 0.6745 147.8 0.211 61.1 0.2126 83.0 0.6994 -88.0 2.200 0.6731 138.0 0.243 62.0 0.2586 79.3 0.6625 -96.6 2.400 0.6705 129.1 0.278 62.8 0.3035 74.6 0.6277 -105.0 2.600 0.6660 121.3 0.318 61.9 0.3452 69.7 0.5932 -113.6 2.800 0.6682 114.2 0.356 58.8 0.3845 64.7 0.5637 -121.9 3.000 0.6597 107.6 0.391 55.8 0.4193 59.5 0.5341 -130.3 ! ! SIEMENS AG Semiconductor Group, Munich