! SIEMENS Small Signal Semiconductors ! BFQ81 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 10 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 0.7336 -8.6 25.795 173.4 0.0048 86.6 0.9620 -4.9 0.020 0.7162 -16.9 25.408 168.7 0.0101 81.5 0.9532 -10.1 0.050 0.6787 -39.9 23.140 152.9 0.0230 71.7 0.8758 -23.4 0.100 0.5920 -73.1 18.797 134.0 0.0387 61.0 0.7139 -39.7 0.150 0.5140 -96.3 14.881 120.3 0.0476 54.7 0.5688 -49.7 0.200 0.4800 -113.5 12.183 112.0 0.0544 53.4 0.4708 -54.7 0.250 0.4517 -126.7 10.136 105.3 0.0604 52.7 0.3940 -58.6 0.300 0.4366 -137.0 8.658 100.6 0.0660 53.0 0.3446 -60.8 0.400 0.4198 -151.8 6.702 93.5 0.0774 55.0 0.2731 -62.8 0.500 0.4110 -162.3 5.427 87.6 0.0894 56.7 0.2299 -63.5 0.600 0.4116 -171.5 4.587 82.6 0.1015 57.5 0.2032 -64.4 0.700 0.4103 -178.9 3.974 78.1 0.1140 58.2 0.1820 -65.6 0.800 0.4129 175.6 3.492 74.4 0.1268 58.2 0.1645 -66.4 0.900 0.4121 169.8 3.135 70.7 0.1399 58.2 0.1526 -66.8 1.000 0.4128 164.4 2.845 67.2 0.1528 57.9 0.1441 -68.6 1.100 0.4232 159.4 2.613 63.9 0.1656 57.3 0.1350 -71.5 1.200 0.4260 155.1 2.419 60.7 0.1784 56.5 0.1258 -73.8 1.300 0.4310 151.5 2.246 57.8 0.1914 55.6 0.1189 -76.0 1.400 0.4373 147.4 2.102 55.0 0.2039 54.8 0.1134 -79.6 1.500 0.4406 144.6 1.996 52.1 0.2164 53.7 0.1083 -83.3 1.600 0.4482 140.4 1.874 49.0 0.2288 52.7 0.1017 -87.9 1.700 0.4585 136.9 1.781 46.2 0.2408 51.6 0.0950 -92.3 1.800 0.4644 133.6 1.703 43.9 0.2533 50.4 0.0920 -96.7 1.900 0.4732 130.4 1.633 41.1 0.2653 49.2 0.0898 -104.0 2.000 0.4755 127.9 1.560 38.5 0.2772 47.9 0.0855 -112.4 2.200 0.4935 122.5 1.443 33.7 0.3007 45.3 0.0803 -126.5 2.400 0.5103 116.8 1.352 28.8 0.3228 42.5 0.0829 -147.6 2.600 0.5313 111.5 1.267 24.5 0.3434 39.7 0.0881 -162.7 2.800 0.5461 107.3 1.199 20.4 0.3628 37.0 0.1051 -179.4 3.000 0.5695 103.2 1.135 16.3 0.3816 34.1 0.1209 169.4 3.500 0.6125 93.9 1.006 7.3 0.4244 27.2 0.1826 148.6 4.000 0.6537 86.1 0.906 -0.1 0.4568 20.2 0.2513 133.3 4.500 0.6808 79.5 0.821 -7.2 0.4778 13.4 0.3060 121.1 5.000 0.6990 72.1 0.749 -10.0 0.4898 10.5 0.3008 118.4 5.500 0.7109 67.8 0.722 -15.6 0.5255 3.7 0.3950 111.3 6.000 0.7213 63.2 0.688 -19.9 0.5447 -2.0 0.4420 103.9 ! ! SIEMENS AG Semiconductor Group, Munich