! SIEMENS Small Signal Semiconductors ! BFQ81 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 3 V IC = 5 mA ! Common Emitter S-Parameters: August 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.8582 -3.7 15.298 176.1 0.0029 90.1 0.9914 -1.7 0.020 0.8463 -7.2 15.127 174.2 0.0060 84.7 0.9874 -3.7 0.050 0.8317 -18.2 14.686 165.2 0.0151 80.6 0.9690 -8.8 0.100 0.7869 -35.5 13.781 153.1 0.0287 72.5 0.9186 -16.5 0.150 0.7123 -50.6 12.491 141.0 0.0396 64.8 0.8453 -22.6 0.200 0.6504 -63.9 11.280 132.3 0.0477 60.5 0.7792 -26.6 0.250 0.5894 -76.1 10.100 124.1 0.0543 57.1 0.7114 -29.9 0.300 0.5327 -86.4 9.021 118.0 0.0597 55.7 0.6608 -31.8 0.400 0.4619 -103.9 7.386 108.5 0.0684 53.1 0.5805 -33.6 0.500 0.4075 -118.6 6.153 100.5 0.0759 53.0 0.5264 -34.2 0.600 0.3791 -131.4 5.309 94.3 0.0834 53.1 0.4907 -34.6 0.700 0.3587 -142.1 4.655 89.1 0.0906 54.0 0.4642 -34.9 0.800 0.3430 -151.5 4.115 84.5 0.0981 54.3 0.4436 -35.1 0.900 0.3284 -159.6 3.695 80.2 0.1059 55.2 0.4305 -35.3 1.000 0.3267 -168.6 3.372 76.5 0.1134 55.7 0.4193 -35.8 1.100 0.3251 -176.9 3.104 72.9 0.1218 56.2 0.4086 -36.8 1.200 0.3258 176.1 2.876 69.4 0.1299 56.7 0.3994 -37.8 1.300 0.3240 170.7 2.665 66.4 0.1388 56.7 0.3921 -38.7 1.400 0.3325 165.2 2.494 63.3 0.1468 57.1 0.3863 -40.0 1.500 0.3335 159.9 2.361 60.5 0.1559 57.0 0.3790 -41.3 1.600 0.3395 155.3 2.215 57.2 0.1650 56.9 0.3719 -42.5 1.700 0.3466 150.1 2.104 54.5 0.1745 56.8 0.3647 -44.0 1.800 0.3575 145.3 2.012 52.0 0.1840 56.2 0.3600 -45.6 1.900 0.3663 141.6 1.925 49.3 0.1931 56.0 0.3541 -47.7 2.000 0.3693 137.3 1.840 46.6 0.2033 55.4 0.3457 -49.5 2.200 0.3911 131.2 1.693 41.7 0.2231 54.4 0.3339 -53.3 2.400 0.4083 124.2 1.589 36.7 0.2433 53.1 0.3155 -58.2 2.600 0.4318 118.1 1.482 32.3 0.2634 51.4 0.3007 -62.8 2.800 0.4523 113.3 1.404 28.1 0.2843 49.6 0.2813 -69.1 3.000 0.4764 108.4 1.324 23.9 0.3051 47.7 0.2661 -75.3 3.500 0.5307 98.5 1.169 14.3 0.3579 42.3 0.2254 -97.2 4.000 0.5842 90.5 1.050 5.8 0.4073 35.7 0.1973 -127.8 4.500 0.6257 83.5 0.950 -2.1 0.4498 28.6 0.1997 -160.1 5.000 0.6562 75.2 0.840 -6.5 0.4709 24.1 0.2007 -173.5 5.500 0.6691 71.1 0.806 -11.9 0.5277 16.9 0.2930 160.2 6.000 0.6860 66.0 0.758 -16.8 0.5616 10.0 0.3485 143.0 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.800 1.25 0.26 77 0.19 2.000 2.25 0.32 178 0.17 ! ! SIEMENS AG Semiconductor Group, Munich