! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.5 V IC = 3 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 0.8837 -1.9 8.922 178.5 0.0022 90.0 0.9843 -1.0 0.020 0.8852 -3.9 8.958 176.3 0.0051 88.9 0.9765 -2.0 0.050 0.8749 -9.9 8.994 171.3 0.0124 84.1 0.9770 -4.9 0.100 0.8547 -19.5 8.720 163.0 0.0244 78.5 0.9599 -9.6 0.150 0.8137 -28.8 8.437 153.8 0.0355 73.4 0.9282 -14.0 0.200 0.7746 -37.3 8.063 146.7 0.0448 69.6 0.8910 -17.6 0.250 0.7310 -45.3 7.560 139.9 0.0536 65.2 0.8551 -20.7 0.300 0.6762 -52.7 7.107 133.5 0.0605 62.8 0.8198 -23.1 0.400 0.5847 -66.5 6.270 123.2 0.0722 57.9 0.7478 -27.0 0.500 0.5068 -77.4 5.460 114.2 0.0809 55.0 0.6886 -29.3 0.600 0.4482 -87.8 4.863 107.3 0.0892 53.1 0.6472 -30.9 0.700 0.3962 -97.5 4.365 100.8 0.0957 52.2 0.6120 -32.0 0.800 0.3504 -107.2 3.927 95.1 0.1022 51.6 0.5836 -32.8 0.900 0.3137 -115.4 3.569 90.1 0.1085 51.6 0.5592 -33.4 1.000 0.2884 -123.7 3.291 85.9 0.1145 51.8 0.5410 -34.2 1.100 0.2695 -133.5 3.053 82.0 0.1209 51.7 0.5265 -35.0 1.200 0.2510 -142.1 2.840 78.0 0.1271 51.9 0.5137 -35.8 1.300 0.2359 -150.0 2.646 74.7 0.1340 52.0 0.5042 -36.6 1.400 0.2272 -158.9 2.483 71.2 0.1402 52.1 0.4948 -37.7 1.500 0.2235 -166.9 2.361 68.0 0.1467 52.4 0.4867 -38.4 1.600 0.2211 -176.4 2.220 64.5 0.1542 52.6 0.4797 -39.5 1.700 0.2215 175.3 2.113 61.4 0.1609 52.9 0.4703 -40.4 1.800 0.2240 168.9 2.021 58.8 0.1684 52.9 0.4645 -41.8 1.900 0.2287 162.3 1.946 56.0 0.1763 52.9 0.4574 -43.1 2.000 0.2345 156.2 1.858 53.3 0.1842 52.6 0.4535 -44.6 2.200 0.2481 144.4 1.716 48.0 0.2000 52.3 0.4376 -47.6 2.400 0.2696 135.5 1.615 43.0 0.2165 51.6 0.4238 -50.9 2.600 0.2967 126.4 1.515 38.2 0.2339 50.8 0.4094 -54.4 2.800 0.3158 120.1 1.439 34.0 0.2519 49.8 0.3960 -58.9 3.000 0.3410 114.1 1.363 29.4 0.2696 48.4 0.3772 -63.3 3.500 0.4091 102.3 1.208 19.4 0.3185 44.4 0.3365 -78.2 4.000 0.4648 93.6 1.096 10.5 0.3658 39.5 0.2970 -97.3 4.500 0.5166 86.6 1.007 2.5 0.4131 33.7 0.2698 -120.4 5.000 0.5578 79.7 0.924 -4.8 0.4585 27.6 0.2627 -145.3 5.500 0.5919 74.3 0.848 -11.0 0.4982 21.1 0.2798 -169.0 6.000 0.6164 68.7 0.794 -16.2 0.5337 14.2 0.3090 169.7 ! ! SIEMENS AG Semiconductor Group, Munich