! SIEMENS Discrete & RF Semiconductors ! BFY181 ! Si NPN RF Bipolar Junction Transistor in MICRO-X ! VCE = 1.5 V IC = 1.7 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 0.9399 -1.0 5.512 179.5 0.0016 86.7 0.9960 -0.5 0.020 0.9371 -1.9 5.549 178.5 0.0032 89.7 0.9968 -0.9 0.050 0.9383 -4.9 5.482 176.4 0.0073 86.5 0.9953 -2.3 0.100 0.9360 -10.2 5.524 172.3 0.0142 84.4 0.9938 -4.6 0.150 0.9384 -15.2 5.441 168.5 0.0214 81.4 0.9883 -6.9 0.200 0.9237 -20.0 5.415 164.4 0.0285 78.0 0.9824 -9.0 0.250 0.9158 -25.1 5.346 160.9 0.0351 75.4 0.9742 -11.3 0.300 0.9045 -29.9 5.270 156.8 0.0415 72.2 0.9629 -13.3 0.400 0.8818 -39.2 5.102 149.6 0.0533 66.4 0.9431 -17.4 0.500 0.8540 -48.5 4.934 142.5 0.0639 61.4 0.9153 -21.1 0.600 0.8241 -56.8 4.702 135.8 0.0728 56.8 0.8879 -24.5 0.700 0.7999 -65.2 4.453 130.7 0.0809 51.9 0.8611 -27.5 0.800 0.7688 -72.6 4.213 124.7 0.0876 48.3 0.8346 -30.1 0.900 0.7384 -79.4 4.036 119.7 0.0935 44.8 0.8108 -32.6 1.000 0.7132 -86.1 3.828 114.8 0.0980 41.5 0.7861 -35.0 1.100 0.6961 -92.5 3.634 110.5 0.1016 38.6 0.7643 -36.9 1.200 0.6742 -98.5 3.453 106.1 0.1052 36.2 0.7470 -39.0 1.300 0.6575 -104.0 3.277 102.4 0.1082 34.0 0.7286 -40.7 1.400 0.6448 -109.1 3.111 98.3 0.1102 32.0 0.7139 -42.5 1.500 0.6311 -114.0 2.977 94.8 0.1121 30.1 0.7000 -44.0 1.600 0.6206 -118.6 2.835 91.7 0.1139 28.9 0.6905 -45.5 1.700 0.6088 -123.4 2.732 88.4 0.1152 27.4 0.6775 -47.0 1.800 0.5932 -127.7 2.607 85.4 0.1162 26.4 0.6690 -48.4 1.900 0.5873 -131.0 2.505 82.5 0.1166 24.8 0.6607 -49.8 2.000 0.5769 -135.0 2.411 79.2 0.1184 24.1 0.6554 -51.1 2.200 0.5673 -141.6 2.229 74.0 0.1198 22.1 0.6464 -54.0 2.400 0.5553 -148.1 2.065 69.0 0.1202 20.8 0.6357 -56.7 2.600 0.5476 -152.9 1.933 64.4 0.1212 19.9 0.6309 -59.2 2.800 0.5410 -158.9 1.826 60.0 0.1225 19.3 0.6280 -61.8 3.000 0.5358 -163.6 1.715 55.4 0.1229 18.3 0.6263 -64.5 3.500 0.5199 -175.1 1.517 45.4 0.1265 17.7 0.6269 -71.0 4.000 0.5149 174.6 1.361 35.7 0.1301 17.3 0.6322 -78.0 4.500 0.5111 164.0 1.242 26.5 0.1348 17.5 0.6403 -85.2 5.000 0.5033 154.4 1.132 18.0 0.1406 17.3 0.6516 -92.9 5.500 0.5059 144.7 1.044 9.4 0.1483 17.5 0.6586 -100.8 6.000 0.5083 135.2 0.971 1.8 0.1577 17.3 0.6628 -108.7 ! ! SIEMENS AG Semiconductor Group, Munich