! SIEMENS Discrete & RF Semiconductors ! BFY181 ! Si NPN RF Bipolar Junction Transistor in MICRO-X ! VCE = 1.75 V IC = 8 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 0.7354 -2.8 17.576 178.3 0.0014 94.6 0.9797 -0.9 0.020 0.7354 -5.8 17.880 176.1 0.0029 91.9 0.9799 -2.0 0.050 0.7307 -14.4 17.416 171.1 0.0064 81.7 0.9727 -5.1 0.100 0.7186 -28.2 17.027 162.2 0.0126 76.1 0.9500 -10.0 0.150 0.7078 -41.6 16.244 153.9 0.0182 70.5 0.9202 -14.3 0.200 0.6785 -53.4 15.277 146.4 0.0230 65.5 0.8826 -18.0 0.250 0.6571 -64.4 14.262 139.8 0.0271 60.6 0.8420 -21.1 0.300 0.6348 -74.7 13.341 133.5 0.0303 56.6 0.8019 -23.5 0.400 0.6017 -91.4 11.545 123.6 0.0354 51.0 0.7353 -26.8 0.500 0.5723 -105.6 10.036 115.5 0.0387 47.6 0.6814 -29.0 0.600 0.5544 -117.1 8.812 108.9 0.0414 45.7 0.6399 -30.4 0.700 0.5379 -126.4 7.820 104.1 0.0440 43.7 0.6097 -31.4 0.800 0.5281 -133.7 6.966 99.3 0.0457 43.1 0.5863 -32.3 0.900 0.5211 -140.2 6.333 95.6 0.0480 42.5 0.5690 -33.2 1.000 0.5136 -146.2 5.771 91.8 0.0498 42.2 0.5555 -34.1 1.100 0.5177 -151.2 5.297 88.6 0.0510 42.5 0.5442 -34.9 1.200 0.5123 -155.4 4.899 85.4 0.0531 42.7 0.5367 -35.9 1.300 0.5109 -159.8 4.534 82.7 0.0550 43.2 0.5295 -37.0 1.400 0.5115 -162.9 4.237 79.7 0.0569 43.7 0.5246 -38.1 1.500 0.5085 -166.2 3.975 77.2 0.0589 44.2 0.5205 -39.3 1.600 0.5116 -168.5 3.732 74.9 0.0604 44.9 0.5183 -40.5 1.700 0.5141 -171.5 3.541 72.4 0.0625 45.0 0.5159 -41.7 1.800 0.5099 -174.4 3.338 70.5 0.0648 45.4 0.5147 -43.0 1.900 0.5136 -176.3 3.175 68.1 0.0665 45.5 0.5142 -44.3 2.000 0.5106 -178.4 3.029 65.8 0.0689 45.9 0.5139 -45.7 2.200 0.5093 177.2 2.776 61.8 0.0732 46.3 0.5143 -48.5 2.400 0.5146 173.4 2.543 58.0 0.0772 46.8 0.5154 -51.2 2.600 0.5112 170.4 2.370 54.1 0.0817 46.9 0.5179 -54.0 2.800 0.5150 166.6 2.207 50.6 0.0868 47.4 0.5213 -56.8 3.000 0.5141 163.6 2.071 46.8 0.0916 47.2 0.5252 -59.6 3.500 0.5115 155.7 1.804 38.3 0.1041 46.8 0.5354 -66.7 4.000 0.5129 148.2 1.603 29.7 0.1182 45.6 0.5485 -74.1 4.500 0.5150 140.1 1.441 21.2 0.1327 43.7 0.5623 -81.8 5.000 0.5130 132.3 1.309 13.5 0.1473 41.5 0.5781 -89.8 5.500 0.5172 124.6 1.196 5.2 0.1630 38.8 0.5892 -98.0 6.000 0.5271 116.8 1.100 -1.9 0.1787 35.5 0.5983 -106.2 ! ! SIEMENS AG Semiconductor Group, Munich