! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 4 V IC = 0.2 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 0.9876 -2.4 0.795 178.1 0.0023 90.7 0.9998 -0.4 0.020 0.9867 -4.8 0.790 175.9 0.0044 84.2 0.9996 -0.9 0.050 0.9806 -11.9 0.781 169.5 0.0108 83.5 0.9994 -2.1 0.100 0.9612 -23.1 0.757 159.6 0.0208 76.6 0.9963 -4.2 0.150 0.9412 -33.9 0.735 150.8 0.0300 70.7 0.9926 -6.3 0.200 0.9125 -44.1 0.706 141.6 0.0378 65.0 0.9891 -8.3 0.250 0.8858 -54.2 0.682 133.1 0.0446 60.1 0.9835 -10.2 0.300 0.8580 -63.4 0.655 125.3 0.0495 55.5 0.9765 -11.9 0.400 0.8031 -80.8 0.597 111.0 0.0559 48.3 0.9674 -15.6 0.500 0.7610 -96.5 0.546 98.6 0.0585 43.4 0.9563 -19.0 0.600 0.7220 -110.5 0.498 87.6 0.0575 41.5 0.9472 -22.6 0.700 0.6940 -123.2 0.457 78.5 0.0549 42.6 0.9385 -26.0 0.800 0.6746 -134.4 0.420 70.6 0.0514 46.6 0.9303 -29.4 0.900 0.6625 -144.6 0.389 63.7 0.0487 54.8 0.9205 -32.9 1.000 0.6520 -154.0 0.360 58.0 0.0492 66.2 0.9127 -36.5 1.100 0.6494 -162.7 0.334 53.3 0.0536 78.5 0.9033 -40.1 1.200 0.6517 -171.2 0.309 49.6 0.0626 88.2 0.8945 -43.8 1.300 0.6476 -178.1 0.283 47.4 0.0753 94.8 0.8840 -47.5 1.400 0.6499 174.9 0.267 46.4 0.0913 98.7 0.8741 -51.3 1.500 0.6537 168.3 0.250 45.4 0.1090 100.5 0.8618 -54.9 1.600 0.6517 162.5 0.239 46.8 0.1286 100.7 0.8499 -58.8 1.700 0.6544 157.0 0.225 47.3 0.1493 100.1 0.8380 -62.6 1.800 0.6592 151.7 0.217 51.1 0.1707 98.8 0.8249 -66.5 1.900 0.6613 146.5 0.216 53.5 0.1930 97.0 0.8085 -70.5 2.000 0.6634 141.4 0.219 58.3 0.2152 95.0 0.7951 -74.2 2.200 0.6670 132.5 0.235 61.6 0.2609 90.1 0.7651 -82.1 2.400 0.6665 124.2 0.264 64.3 0.3061 84.6 0.7328 -90.0 2.600 0.6702 116.3 0.303 65.3 0.3484 79.1 0.6999 -97.9 2.800 0.6674 109.6 0.339 63.7 0.3894 73.6 0.6687 -105.8 3.000 0.6621 102.9 0.379 61.5 0.4275 68.1 0.6374 -113.6 ! ! SIEMENS AG Semiconductor Group, Munich