! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.5 V IC = 3 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 0.7634 -44.1 6.573 150.1 0.0288 60.0 0.8571 -10.7 0.020 0.6649 -76.1 5.136 130.4 0.0435 42.1 0.7557 -14.7 0.050 0.5255 -124.4 2.653 102.3 0.0541 22.7 0.6363 -13.8 0.100 0.4912 -149.7 1.379 84.1 0.0565 16.2 0.5986 -13.7 0.150 0.4936 -159.2 0.920 73.1 0.0572 16.0 0.5853 -15.8 0.200 0.5031 -164.5 0.685 64.2 0.0572 16.8 0.5731 -18.5 0.250 0.5145 -168.3 0.544 56.8 0.0570 18.8 0.5640 -21.2 0.300 0.5270 -171.5 0.450 50.7 0.0564 21.3 0.5532 -24.1 0.400 0.5514 -177.1 0.333 41.7 0.0555 28.3 0.5340 -29.8 0.500 0.5745 178.4 0.260 35.2 0.0562 37.7 0.5169 -35.4 0.600 0.5938 173.6 0.215 31.6 0.0594 48.3 0.4986 -40.9 0.700 0.6106 169.2 0.184 30.5 0.0667 58.1 0.4822 -46.4 0.800 0.6299 164.6 0.160 32.2 0.0772 65.3 0.4661 -51.9 0.900 0.6445 160.6 0.146 36.2 0.0906 70.4 0.4494 -57.4 1.000 0.6562 156.3 0.140 41.8 0.1064 73.4 0.4335 -62.9 1.100 0.6699 152.1 0.140 48.1 0.1232 75.1 0.4183 -68.4 1.200 0.6791 148.0 0.144 54.1 0.1414 75.5 0.4037 -73.8 1.300 0.6836 144.2 0.154 58.7 0.1595 75.2 0.3888 -79.3 1.400 0.6911 140.5 0.171 61.8 0.1786 74.4 0.3756 -84.7 1.500 0.6950 137.0 0.189 63.2 0.1972 73.0 0.3624 -90.0 1.600 0.6990 133.6 0.208 63.6 0.2160 71.5 0.3498 -95.4 1.700 0.7000 130.2 0.221 63.5 0.2351 69.7 0.3390 -100.8 1.800 0.7026 126.9 0.240 64.9 0.2531 68.0 0.3276 -106.0 1.900 0.7030 123.8 0.257 62.7 0.2714 66.0 0.3168 -111.3 2.000 0.7032 120.5 0.277 62.6 0.2889 64.1 0.3089 -116.4 2.200 0.7018 114.7 0.313 58.3 0.3227 59.9 0.2930 -126.9 2.400 0.7002 108.8 0.341 55.0 0.3543 55.7 0.2810 -137.1 2.600 0.6981 103.6 0.380 51.1 0.3824 51.6 0.2717 -147.1 2.800 0.6920 99.4 0.405 47.4 0.4086 47.7 0.2666 -156.7 3.000 0.6882 94.7 0.427 43.8 0.4316 43.7 0.2631 -166.1 ! ! SIEMENS AG Semiconductor Group, Munich