! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 2.5 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 0.9736 -3.8 1.823 177.1 0.0025 87.7 0.9996 -0.6 0.020 0.9703 -7.5 1.816 174.1 0.0052 83.4 0.9993 -1.1 0.050 0.9576 -18.4 1.779 165.3 0.0122 79.3 0.9969 -2.8 0.100 0.9145 -35.5 1.670 152.2 0.0229 70.1 0.9887 -5.4 0.150 0.8691 -51.0 1.558 140.8 0.0315 62.6 0.9794 -7.8 0.200 0.8192 -65.0 1.434 130.2 0.0376 56.1 0.9685 -9.9 0.250 0.7785 -77.8 1.323 120.7 0.0422 51.2 0.9589 -11.9 0.300 0.7403 -88.9 1.220 112.4 0.0449 47.6 0.9493 -13.7 0.400 0.6831 -108.4 1.036 98.4 0.0469 43.4 0.9355 -17.4 0.500 0.6486 -123.9 0.894 86.6 0.0465 43.5 0.9231 -21.0 0.600 0.6260 -137.3 0.781 76.8 0.0449 47.3 0.9135 -24.7 0.700 0.6134 -148.1 0.690 68.3 0.0440 55.5 0.9032 -28.3 0.800 0.6065 -157.8 0.617 61.1 0.0452 65.8 0.8943 -32.0 0.900 0.6088 -166.4 0.558 54.7 0.0500 77.2 0.8852 -35.8 1.000 0.6094 -173.7 0.505 49.2 0.0583 86.3 0.8752 -39.6 1.100 0.6132 179.0 0.459 44.2 0.0699 92.8 0.8644 -43.5 1.200 0.6217 172.7 0.420 40.8 0.0846 96.5 0.8539 -47.4 1.300 0.6214 166.9 0.379 37.9 0.1009 98.6 0.8400 -51.4 1.400 0.6310 161.5 0.352 36.4 0.1188 99.0 0.8295 -55.4 1.500 0.6385 156.1 0.324 35.0 0.1380 98.7 0.8171 -59.4 1.600 0.6415 151.3 0.298 34.8 0.1579 97.4 0.8023 -63.5 1.700 0.6496 146.7 0.280 35.1 0.1792 95.9 0.7893 -67.6 1.800 0.6552 142.2 0.263 38.4 0.2004 94.0 0.7737 -71.6 1.900 0.6596 137.8 0.251 40.8 0.2223 91.8 0.7566 -75.8 2.000 0.6611 133.5 0.247 44.0 0.2441 89.5 0.7428 -79.9 2.200 0.6642 125.7 0.250 49.7 0.2876 84.5 0.7097 -88.2 2.400 0.6687 118.5 0.269 53.9 0.3305 79.0 0.6770 -96.4 2.600 0.6707 111.4 0.303 56.0 0.3707 73.6 0.6440 -104.6 2.800 0.6708 105.4 0.339 56.4 0.4087 68.2 0.6143 -112.9 3.000 0.6646 99.5 0.375 54.7 0.4428 62.9 0.5832 -121.0 ! ! SIEMENS AG Semiconductor Group, Munich