! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 V IC = 0.3 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 0.9824 -3.0 1.144 177.5 0.0030 88.4 0.9998 -0.5 0.020 0.9793 -6.0 1.141 175.0 0.0059 86.9 0.9991 -1.2 0.050 0.9718 -14.7 1.122 167.4 0.0147 81.4 0.9979 -2.9 0.100 0.9433 -28.4 1.075 155.6 0.0282 72.8 0.9917 -5.7 0.150 0.9124 -41.4 1.027 145.1 0.0399 66.0 0.9845 -8.3 0.200 0.8729 -53.6 0.968 134.7 0.0494 59.3 0.9751 -10.8 0.250 0.8378 -65.1 0.917 125.3 0.0567 54.0 0.9656 -13.1 0.300 0.8059 -75.4 0.865 116.8 0.0619 49.3 0.9551 -15.3 0.400 0.7471 -94.1 0.765 101.8 0.0673 42.3 0.9374 -19.7 0.500 0.7058 -110.0 0.681 89.0 0.0685 38.7 0.9217 -23.8 0.600 0.6722 -123.9 0.609 78.3 0.0665 37.7 0.9066 -28.0 0.700 0.6534 -135.9 0.550 69.0 0.0633 40.6 0.8925 -32.0 0.800 0.6417 -146.4 0.497 61.1 0.0604 46.3 0.8803 -36.1 0.900 0.6330 -155.9 0.453 54.2 0.0595 55.2 0.8654 -40.3 1.000 0.6313 -164.4 0.414 49.0 0.0630 65.7 0.8521 -44.4 1.100 0.6308 -172.4 0.381 43.8 0.0708 75.3 0.8374 -48.7 1.200 0.6367 -179.7 0.350 40.9 0.0825 82.1 0.8235 -52.9 1.300 0.6346 173.9 0.320 38.6 0.0975 86.6 0.8067 -57.2 1.400 0.6425 167.9 0.299 37.9 0.1152 89.1 0.7928 -61.5 1.500 0.6452 161.9 0.279 37.4 0.1342 90.0 0.7763 -65.8 1.600 0.6475 156.7 0.262 38.4 0.1543 89.7 0.7588 -70.2 1.700 0.6510 151.5 0.249 39.8 0.1757 88.9 0.7423 -74.5 1.800 0.6565 146.8 0.241 42.4 0.1973 87.4 0.7252 -78.8 1.900 0.6587 142.3 0.239 45.1 0.2194 85.6 0.7057 -83.1 2.000 0.6608 137.8 0.238 49.2 0.2408 83.6 0.6893 -87.4 2.200 0.6618 129.2 0.254 52.7 0.2850 79.0 0.6544 -96.1 2.400 0.6636 121.7 0.280 55.5 0.3270 73.9 0.6202 -104.5 2.600 0.6659 114.5 0.318 56.2 0.3667 68.8 0.5879 -113.1 2.800 0.6619 108.5 0.354 54.9 0.4035 63.7 0.5588 -121.7 3.000 0.6596 102.5 0.387 52.6 0.4364 58.6 0.5300 -130.1 ! ! SIEMENS AG Semiconductor Group, Munich