! SIEMENS Discrete & RF Semiconductors ! BFY181 ! Si NPN RF Bipolar Junction Transistor in MICRO-X ! VCE = 4 V IC = 2.5 mA ! Common Emitter S-Parameters: May 1997 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9193 -1.1 7.618 179.1 0.0012 81.4 0.9954 -0.5 0.020 0.9159 -2.5 7.820 178.1 0.0026 94.3 0.9972 -1.0 0.050 0.9157 -5.8 7.620 175.7 0.0062 83.6 0.9937 -2.5 0.100 0.9119 -11.4 7.585 171.5 0.0127 84.3 0.9876 -5.1 0.150 0.9117 -17.5 7.585 167.1 0.0189 79.9 0.9836 -7.6 0.200 0.8994 -22.7 7.419 162.8 0.0252 77.3 0.9740 -10.0 0.250 0.8850 -28.5 7.294 158.9 0.0308 73.7 0.9656 -12.4 0.300 0.8746 -33.9 7.250 154.3 0.0364 70.4 0.9496 -14.6 0.400 0.8422 -44.5 6.885 146.7 0.0464 64.6 0.9212 -18.8 0.500 0.8087 -54.1 6.543 139.3 0.0545 59.5 0.8894 -22.6 0.600 0.7735 -63.8 6.221 132.2 0.0620 55.1 0.8565 -25.7 0.700 0.7432 -72.5 5.848 126.9 0.0680 50.7 0.8243 -28.6 0.800 0.7100 -80.2 5.469 121.0 0.0728 47.4 0.7937 -31.2 0.900 0.6822 -87.2 5.149 116.4 0.0772 44.0 0.7675 -33.3 1.000 0.6602 -93.9 4.835 111.7 0.0809 41.5 0.7449 -35.3 1.100 0.6447 -100.3 4.557 107.5 0.0833 39.3 0.7236 -37.0 1.200 0.6226 -106.4 4.311 103.3 0.0862 37.1 0.7058 -38.8 1.300 0.6046 -112.3 4.072 99.7 0.0884 35.4 0.6876 -40.2 1.400 0.5946 -117.2 3.862 95.8 0.0893 33.9 0.6733 -41.8 1.500 0.5814 -122.1 3.675 92.5 0.0913 32.7 0.6598 -43.2 1.600 0.5715 -127.1 3.487 89.6 0.0924 32.0 0.6502 -44.4 1.700 0.5626 -131.0 3.329 86.6 0.0935 30.6 0.6393 -45.8 1.800 0.5495 -135.1 3.160 83.9 0.0949 30.1 0.6330 -47.0 1.900 0.5474 -138.2 3.024 81.2 0.0954 29.1 0.6268 -48.4 2.000 0.5383 -141.7 2.911 78.4 0.0973 28.7 0.6213 -49.6 2.200 0.5288 -148.5 2.691 73.3 0.0987 27.7 0.6123 -52.2 2.400 0.5214 -154.4 2.476 68.8 0.1004 27.1 0.6059 -54.7 2.600 0.5116 -159.2 2.322 64.3 0.1019 26.9 0.6006 -57.1 2.800 0.5100 -164.6 2.176 60.3 0.1043 26.7 0.6004 -59.5 3.000 0.5037 -169.4 2.049 56.0 0.1057 26.5 0.5981 -62.1 3.500 0.4934 179.7 1.802 46.5 0.1116 26.8 0.6001 -68.4 4.000 0.4889 169.9 1.613 37.4 0.1185 26.7 0.6070 -75.1 4.500 0.4851 160.1 1.461 28.5 0.1265 26.6 0.6174 -82.2 5.000 0.4796 150.9 1.327 20.2 0.1353 26.4 0.6284 -89.6 5.500 0.4815 141.3 1.225 11.7 0.1461 26.0 0.6361 -97.3 6.000 0.4871 131.9 1.134 4.3 0.1575 24.7 0.6426 -105.1 ! ! SIEMENS AG Semiconductor Group, Munich