! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 10 V IC = 25 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 0.5508 -125.6 9.579 123.8 0.0029 38.9 0.9200 -1.9 0.020 0.6066 -150.5 5.531 107.4 0.0036 30.7 0.9076 -1.8 0.050 0.6388 -167.0 2.387 92.6 0.0040 33.8 0.9014 -2.3 0.100 0.6629 -173.7 1.232 80.1 0.0047 50.1 0.8986 -3.8 0.150 0.6825 -177.1 0.817 70.2 0.0058 67.6 0.8954 -5.4 0.200 0.6973 179.6 0.594 60.9 0.0072 78.1 0.8922 -7.0 0.250 0.7086 177.0 0.459 53.0 0.0090 89.1 0.8877 -8.6 0.300 0.7178 174.4 0.364 46.2 0.0110 96.0 0.8833 -10.1 0.400 0.7287 169.4 0.242 35.2 0.0162 106.3 0.8769 -13.1 0.500 0.7359 165.1 0.167 27.2 0.0228 111.9 0.8706 -16.1 0.600 0.7411 160.9 0.116 24.1 0.0307 115.7 0.8636 -19.1 0.700 0.7470 156.8 0.081 25.2 0.0402 117.2 0.8558 -22.1 0.800 0.7534 152.8 0.057 36.7 0.0503 117.7 0.8484 -25.2 0.900 0.7589 149.1 0.046 59.7 0.0618 117.7 0.8401 -28.2 1.000 0.7589 145.2 0.049 84.0 0.0743 116.7 0.8331 -31.3 1.100 0.7649 141.5 0.064 97.3 0.0880 115.5 0.8260 -34.5 1.200 0.7702 137.8 0.081 105.2 0.1021 113.9 0.8156 -37.5 1.300 0.7723 134.5 0.099 107.5 0.1175 112.0 0.8060 -40.7 1.400 0.7712 131.1 0.119 106.5 0.1335 110.1 0.7962 -43.9 1.500 0.7739 127.7 0.139 105.4 0.1497 107.9 0.7857 -47.0 1.600 0.7751 124.3 0.161 103.9 0.1667 105.5 0.7731 -50.2 1.700 0.7712 121.2 0.176 101.4 0.1841 103.2 0.7625 -53.4 1.800 0.7749 118.3 0.199 100.7 0.2020 100.7 0.7505 -56.7 1.900 0.7707 115.2 0.215 97.5 0.2205 98.2 0.7358 -59.9 2.000 0.7716 112.0 0.237 96.0 0.2382 95.7 0.7237 -63.1 2.200 0.7622 106.0 0.274 89.9 0.2755 90.6 0.6977 -69.6 2.400 0.7564 100.4 0.309 85.0 0.3118 85.3 0.6700 -76.1 2.600 0.7520 95.0 0.350 79.9 0.3464 80.1 0.6421 -82.7 2.800 0.7420 90.2 0.382 74.7 0.3807 75.1 0.6157 -89.2 3.000 0.7286 85.9 0.411 70.3 0.4119 70.2 0.5881 -95.8 ! ! SIEMENS AG Semiconductor Group, Munich