! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 2 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 0.9744 -3.8 1.823 177.0 0.0027 88.6 0.9994 -0.6 0.020 0.9688 -7.7 1.820 174.0 0.0057 84.4 0.9992 -1.2 0.050 0.9562 -18.6 1.777 165.1 0.0132 79.4 0.9964 -2.9 0.100 0.9143 -35.9 1.668 151.8 0.0246 69.9 0.9882 -5.6 0.150 0.8686 -51.5 1.553 140.3 0.0338 61.9 0.9770 -8.2 0.200 0.8162 -65.6 1.431 129.4 0.0406 55.4 0.9658 -10.5 0.250 0.7739 -78.4 1.316 119.8 0.0452 50.5 0.9560 -12.5 0.300 0.7388 -89.5 1.212 111.5 0.0481 46.7 0.9439 -14.5 0.400 0.6804 -109.0 1.028 97.4 0.0502 42.4 0.9294 -18.3 0.500 0.6485 -124.7 0.885 85.5 0.0499 42.2 0.9171 -22.1 0.600 0.6248 -137.8 0.773 75.5 0.0481 45.8 0.9049 -25.9 0.700 0.6136 -148.6 0.686 67.0 0.0472 53.5 0.8937 -29.7 0.800 0.6097 -158.2 0.612 59.6 0.0483 63.7 0.8838 -33.5 0.900 0.6091 -166.6 0.550 53.2 0.0528 74.5 0.8721 -37.5 1.000 0.6094 -174.3 0.501 47.7 0.0612 83.4 0.8607 -41.5 1.100 0.6160 178.7 0.455 42.8 0.0733 90.1 0.8497 -45.5 1.200 0.6227 172.1 0.415 39.4 0.0878 93.8 0.8381 -49.6 1.300 0.6248 166.7 0.375 36.8 0.1046 95.7 0.8244 -53.7 1.400 0.6324 161.3 0.347 35.6 0.1229 96.3 0.8116 -57.8 1.500 0.6383 155.9 0.318 34.0 0.1422 95.9 0.7975 -62.0 1.600 0.6444 151.2 0.296 34.6 0.1624 94.9 0.7814 -66.2 1.700 0.6484 146.7 0.277 35.0 0.1837 93.3 0.7671 -70.4 1.800 0.6536 141.9 0.261 37.9 0.2049 91.4 0.7510 -74.6 1.900 0.6599 137.8 0.255 39.7 0.2269 89.3 0.7333 -78.8 2.000 0.6621 133.5 0.245 43.8 0.2485 87.0 0.7180 -83.0 2.200 0.6657 125.8 0.255 48.9 0.2919 82.1 0.6844 -91.5 2.400 0.6682 118.5 0.274 53.9 0.3344 76.7 0.6515 -99.8 2.600 0.6678 111.6 0.310 55.2 0.3731 71.4 0.6180 -108.3 2.800 0.6709 105.6 0.342 54.8 0.4107 66.0 0.5889 -116.6 3.000 0.6642 99.9 0.377 53.4 0.4434 60.9 0.5582 -124.9 ! ! SIEMENS AG Semiconductor Group, Munich