! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1 V IC = 1 mA ! Common Emitter S-Parameters: May 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.9630 -0.9 3.439 179.6 0.0019 93.8 0.9985 -0.4 0.020 0.9605 -1.6 3.453 178.3 0.0039 83.1 0.9985 -0.9 0.050 0.9588 -4.6 3.514 175.9 0.0100 87.3 0.9963 -2.1 0.100 0.9528 -8.4 3.466 172.0 0.0195 84.7 0.9937 -4.2 0.150 0.9482 -12.8 3.476 166.9 0.0298 80.7 0.9891 -6.3 0.200 0.9351 -17.2 3.464 163.1 0.0389 78.5 0.9818 -8.3 0.250 0.9229 -21.4 3.387 159.0 0.0482 75.5 0.9741 -10.3 0.300 0.9061 -25.6 3.349 154.7 0.0571 73.9 0.9651 -12.1 0.400 0.8701 -33.6 3.290 147.5 0.0736 68.8 0.9429 -15.8 0.500 0.8265 -41.2 3.115 139.4 0.0874 64.1 0.9156 -19.2 0.600 0.7873 -48.8 2.986 132.8 0.1006 60.0 0.8882 -22.0 0.700 0.7400 -55.9 2.880 126.2 0.1111 56.3 0.8610 -24.8 0.800 0.6927 -62.9 2.754 119.7 0.1204 53.0 0.8338 -27.1 0.900 0.6403 -69.1 2.634 113.7 0.1278 50.5 0.8059 -29.2 1.000 0.6052 -75.8 2.509 108.6 0.1337 48.1 0.7802 -31.2 1.100 0.5647 -82.0 2.399 103.7 0.1394 46.2 0.7595 -32.9 1.200 0.5253 -88.2 2.289 98.8 0.1441 44.2 0.7401 -34.7 1.300 0.4893 -94.4 2.191 94.5 0.1483 43.1 0.7215 -35.9 1.400 0.4533 -100.9 2.092 90.1 0.1510 41.9 0.7051 -37.6 1.500 0.4281 -106.9 2.034 86.1 0.1538 41.3 0.6877 -38.6 1.600 0.3900 -114.7 1.945 81.5 0.1567 40.7 0.6751 -39.8 1.700 0.3658 -121.6 1.890 77.9 0.1581 41.0 0.6571 -41.1 1.800 0.3427 -127.9 1.822 74.3 0.1618 41.0 0.6463 -42.2 1.900 0.3264 -135.0 1.765 70.7 0.1635 41.1 0.6353 -43.6 2.000 0.3094 -142.6 1.695 67.4 0.1674 41.1 0.6279 -44.7 2.200 0.2830 -158.0 1.601 60.8 0.1728 42.0 0.6078 -47.5 2.400 0.2736 -173.6 1.512 54.8 0.1800 43.1 0.5908 -50.3 2.600 0.2704 170.0 1.442 49.2 0.1901 44.4 0.5742 -53.2 2.800 0.2812 157.6 1.369 44.3 0.2005 45.3 0.5634 -56.7 3.000 0.2985 144.7 1.313 38.8 0.2124 46.3 0.5466 -60.3 3.500 0.3590 122.1 1.173 27.6 0.2524 47.2 0.5172 -71.9 4.000 0.4194 107.1 1.067 17.6 0.3015 46.0 0.4870 -87.0 4.500 0.4784 96.7 0.979 9.0 0.3592 42.5 0.4597 -104.9 5.000 0.5236 87.6 0.911 1.3 0.4199 37.0 0.4396 -124.6 5.500 0.5640 80.1 0.835 -5.1 0.4767 30.2 0.4325 -145.7 6.000 0.5887 73.6 0.783 -10.4 0.5273 22.6 0.4343 -166.5 ! ! SIEMENS AG Semiconductor Group, Munich