! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 15 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 0.9844 -2.7 1.134 177.9 0.0015 94.3 1.0000 -0.3 0.020 0.9818 -5.5 1.129 175.6 0.0030 84.9 0.9993 -0.7 0.050 0.9741 -13.4 1.114 169.1 0.0075 82.4 0.9995 -1.7 0.100 0.9495 -26.0 1.073 159.0 0.0143 75.3 0.9963 -3.3 0.150 0.9222 -37.9 1.030 149.9 0.0202 69.6 0.9926 -4.9 0.200 0.8852 -49.3 0.980 140.8 0.0252 64.1 0.9891 -6.3 0.250 0.8532 -60.1 0.935 132.5 0.0291 59.4 0.9854 -7.8 0.300 0.8223 -70.0 0.886 124.9 0.0318 55.2 0.9801 -9.1 0.400 0.7622 -88.3 0.789 111.4 0.0349 49.3 0.9738 -11.9 0.500 0.7155 -104.2 0.706 99.6 0.0354 46.8 0.9678 -14.4 0.600 0.6800 -118.3 0.633 89.5 0.0340 47.8 0.9633 -17.1 0.700 0.6553 -130.8 0.571 80.8 0.0320 53.1 0.9585 -19.7 0.800 0.6395 -141.6 0.519 73.1 0.0302 62.7 0.9556 -22.3 0.900 0.6277 -151.7 0.474 66.1 0.0305 76.3 0.9513 -25.0 1.000 0.6234 -160.5 0.435 60.7 0.0345 90.2 0.9468 -27.8 1.100 0.6233 -169.0 0.399 55.4 0.0415 101.5 0.9453 -30.7 1.200 0.6286 -176.7 0.369 51.5 0.0517 108.9 0.9422 -33.6 1.300 0.6273 176.5 0.334 47.7 0.0643 112.9 0.9376 -36.5 1.400 0.6310 170.2 0.313 45.7 0.0784 115.1 0.9347 -39.5 1.500 0.6366 164.0 0.287 43.5 0.0942 115.6 0.9301 -42.5 1.600 0.6395 158.5 0.266 43.3 0.1110 115.0 0.9243 -45.6 1.700 0.6455 153.0 0.244 42.5 0.1294 113.9 0.9197 -48.8 1.800 0.6532 147.9 0.226 45.2 0.1480 112.4 0.9126 -51.9 1.900 0.6586 143.4 0.214 46.9 0.1686 110.5 0.9035 -55.2 2.000 0.6611 138.1 0.203 51.2 0.1892 108.4 0.8971 -58.4 2.200 0.6692 129.3 0.200 57.8 0.2316 103.4 0.8781 -65.2 2.400 0.6782 121.0 0.213 65.5 0.2757 98.0 0.8569 -72.0 2.600 0.6818 113.1 0.246 69.9 0.3192 92.4 0.8324 -78.9 2.800 0.6829 106.3 0.286 71.0 0.3626 86.8 0.8086 -85.9 3.000 0.6820 99.9 0.328 71.4 0.4034 81.1 0.7791 -92.9 ! ! SIEMENS AG Semiconductor Group, Munich