! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.5 V IC = 2.5 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 0.9037 -1.8 7.805 178.7 0.0022 89.5 0.9898 -0.8 0.020 0.9018 -3.3 7.683 176.9 0.0050 85.9 0.9841 -1.8 0.050 0.8976 -8.4 7.750 172.4 0.0126 84.2 0.9839 -4.2 0.100 0.8763 -16.9 7.684 165.0 0.0241 80.1 0.9717 -8.4 0.150 0.8513 -24.6 7.367 157.1 0.0354 75.4 0.9480 -12.3 0.200 0.8151 -32.5 7.200 150.4 0.0450 71.4 0.9196 -15.7 0.250 0.7725 -40.3 6.882 143.7 0.0543 67.5 0.8866 -18.9 0.300 0.7346 -46.4 6.480 138.0 0.0624 64.7 0.8548 -21.5 0.400 0.6494 -58.9 5.856 128.1 0.0754 59.4 0.7959 -25.6 0.500 0.5655 -70.2 5.212 118.5 0.0848 55.6 0.7351 -28.6 0.600 0.5089 -80.0 4.700 111.2 0.0938 53.4 0.6867 -30.7 0.700 0.4526 -88.5 4.251 104.9 0.1008 51.9 0.6509 -32.2 0.800 0.4042 -96.7 3.850 99.1 0.1073 50.7 0.6206 -33.3 0.900 0.3587 -105.2 3.527 93.7 0.1137 50.1 0.5953 -34.2 1.000 0.3254 -114.2 3.268 89.0 0.1191 49.9 0.5724 -35.1 1.100 0.2974 -123.4 3.041 84.7 0.1248 49.7 0.5539 -36.0 1.200 0.2753 -131.3 2.833 80.6 0.1304 49.7 0.5379 -36.9 1.300 0.2579 -139.2 2.647 77.2 0.1363 49.8 0.5258 -37.6 1.400 0.2423 -147.1 2.489 73.7 0.1420 49.9 0.5149 -38.8 1.500 0.2335 -154.2 2.366 70.6 0.1479 50.3 0.5060 -39.5 1.600 0.2268 -163.7 2.236 66.9 0.1546 50.3 0.4985 -40.6 1.700 0.2220 -172.6 2.132 63.8 0.1608 50.4 0.4897 -41.6 1.800 0.2216 178.9 2.041 60.9 0.1681 50.6 0.4824 -42.8 1.900 0.2233 171.9 1.961 57.9 0.1747 50.8 0.4735 -44.0 2.000 0.2292 163.9 1.874 55.0 0.1822 50.7 0.4681 -45.3 2.200 0.2408 152.3 1.736 49.9 0.1969 50.4 0.4544 -48.4 2.400 0.2568 140.8 1.634 44.5 0.2128 50.3 0.4372 -51.5 2.600 0.2799 132.0 1.537 39.8 0.2288 49.6 0.4242 -54.9 2.800 0.3004 124.3 1.456 35.3 0.2469 48.9 0.4097 -59.2 3.000 0.3287 118.0 1.383 30.9 0.2634 47.7 0.3927 -63.4 3.500 0.3954 105.2 1.227 20.7 0.3108 44.2 0.3533 -77.7 4.000 0.4526 95.9 1.115 11.5 0.3587 39.5 0.3127 -96.3 4.500 0.5073 87.9 1.019 3.2 0.4071 34.0 0.2847 -118.6 5.000 0.5488 81.1 0.942 -4.1 0.4521 28.2 0.2777 -142.2 5.500 0.5843 75.4 0.863 -10.5 0.4943 21.7 0.2908 -166.0 6.000 0.6112 69.5 0.803 -16.0 0.5310 14.8 0.3163 172.5 ! ! SIEMENS AG Semiconductor Group, Munich