! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 4 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 0.9607 -0.7 3.427 179.5 0.0014 91.3 0.9997 -0.4 0.020 0.9550 -1.5 3.463 178.4 0.0033 89.1 0.9933 -0.8 0.050 0.9599 -3.9 3.466 176.1 0.0090 88.4 0.9971 -1.9 0.100 0.9560 -7.8 3.437 172.6 0.0172 83.6 0.9943 -3.7 0.150 0.9475 -11.7 3.477 167.7 0.0258 81.0 0.9899 -5.7 0.200 0.9425 -15.4 3.411 164.2 0.0339 79.3 0.9855 -7.3 0.250 0.9292 -19.6 3.404 160.3 0.0421 77.0 0.9801 -9.1 0.300 0.9141 -23.7 3.406 156.1 0.0494 75.4 0.9690 -10.9 0.400 0.8844 -30.8 3.286 149.6 0.0641 70.4 0.9503 -14.2 0.500 0.8410 -37.8 3.120 141.7 0.0769 66.1 0.9293 -17.1 0.600 0.8004 -45.0 3.055 135.3 0.0885 62.3 0.9056 -19.9 0.700 0.7563 -51.7 2.965 128.8 0.0979 58.9 0.8793 -22.4 0.800 0.7099 -58.2 2.829 122.6 0.1068 55.5 0.8547 -24.6 0.900 0.6716 -63.7 2.685 117.0 0.1141 53.2 0.8307 -26.6 1.000 0.6301 -70.1 2.571 112.1 0.1200 50.9 0.8108 -28.4 1.100 0.5889 -76.0 2.478 107.3 0.1255 49.0 0.7906 -30.1 1.200 0.5463 -81.8 2.371 102.3 0.1298 47.3 0.7719 -31.7 1.300 0.5109 -87.4 2.282 98.1 0.1341 46.2 0.7540 -33.0 1.400 0.4691 -92.9 2.190 93.5 0.1366 45.2 0.7379 -34.5 1.500 0.4376 -99.0 2.128 89.7 0.1394 44.7 0.7219 -35.6 1.600 0.4023 -106.3 2.033 85.3 0.1419 44.2 0.7079 -36.8 1.700 0.3750 -111.8 1.967 81.9 0.1440 44.4 0.6927 -38.0 1.800 0.3484 -117.9 1.898 78.3 0.1476 44.2 0.6843 -39.1 1.900 0.3302 -124.8 1.845 74.8 0.1502 44.4 0.6744 -40.4 2.000 0.3085 -131.9 1.777 71.3 0.1535 44.5 0.6667 -41.5 2.200 0.2753 -146.5 1.676 64.8 0.1589 45.6 0.6465 -44.1 2.400 0.2534 -162.8 1.589 58.8 0.1665 46.8 0.6322 -46.7 2.600 0.2440 -179.9 1.514 53.2 0.1762 48.4 0.6152 -49.3 2.800 0.2470 165.4 1.437 48.2 0.1862 49.3 0.6064 -52.6 3.000 0.2613 151.8 1.381 42.8 0.1988 50.6 0.5900 -55.8 3.500 0.3181 125.7 1.234 31.6 0.2375 51.7 0.5633 -66.3 4.000 0.3793 109.7 1.132 21.4 0.2878 50.9 0.5344 -79.9 4.500 0.4444 98.6 1.039 12.6 0.3466 47.5 0.5089 -96.2 5.000 0.4903 89.3 0.966 4.5 0.4100 42.0 0.4832 -114.2 5.500 0.5316 81.7 0.891 -2.2 0.4705 35.0 0.4652 -134.2 6.000 0.5649 75.1 0.834 -8.1 0.5259 27.2 0.4589 -154.5 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.30 0.70 18 0.50 0.900 1.40 0.60 39 0.52 1.800 1.85 0.40 81 0.47 ! ! SIEMENS AG Semiconductor Group, Munich