! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 2.5 V IC = 2 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 0.9265 -1.2 6.410 179.1 0.0014 94.6 0.9961 -0.6 0.020 0.9236 -2.4 6.465 177.5 0.0031 87.5 0.9900 -1.1 0.050 0.9236 -5.7 6.471 174.4 0.0085 84.0 0.9942 -2.7 0.100 0.9168 -11.5 6.380 169.1 0.0171 83.5 0.9902 -5.3 0.150 0.8951 -17.0 6.381 162.6 0.0254 79.1 0.9759 -8.1 0.200 0.8757 -22.4 6.190 157.7 0.0333 76.9 0.9618 -10.4 0.250 0.8505 -28.1 6.060 152.4 0.0406 73.2 0.9470 -12.6 0.300 0.8183 -33.4 5.939 147.0 0.0473 71.0 0.9272 -14.8 0.400 0.7581 -42.7 5.528 138.6 0.0591 65.9 0.8875 -18.5 0.500 0.6868 -51.2 5.051 129.8 0.0693 62.3 0.8481 -21.3 0.600 0.6302 -59.3 4.744 122.5 0.0781 59.5 0.8113 -23.6 0.700 0.5685 -66.8 4.416 115.8 0.0845 57.1 0.7757 -25.6 0.800 0.5107 -73.6 4.081 109.7 0.0911 55.4 0.7466 -27.0 0.900 0.4668 -79.1 3.764 104.5 0.0966 54.3 0.7220 -28.2 1.000 0.4229 -85.2 3.521 99.9 0.1015 53.5 0.7015 -29.3 1.100 0.3820 -92.2 3.317 95.5 0.1063 53.0 0.6844 -30.4 1.200 0.3451 -98.6 3.113 91.0 0.1109 52.8 0.6677 -31.5 1.300 0.3137 -104.3 2.932 87.4 0.1159 52.7 0.6541 -32.3 1.400 0.2813 -110.5 2.772 83.5 0.1196 52.9 0.6419 -33.3 1.500 0.2573 -116.7 2.651 80.3 0.1246 53.3 0.6314 -34.1 1.600 0.2316 -124.8 2.508 76.5 0.1296 53.6 0.6215 -35.0 1.700 0.2125 -132.5 2.392 73.5 0.1344 54.3 0.6102 -35.9 1.800 0.1985 -140.6 2.294 70.6 0.1401 54.2 0.6052 -37.0 1.900 0.1877 -148.6 2.209 67.6 0.1457 54.6 0.5986 -38.2 2.000 0.1801 -157.5 2.114 64.6 0.1512 54.8 0.5927 -39.2 2.200 0.1658 -176.0 1.967 59.2 0.1636 55.5 0.5782 -41.6 2.400 0.1690 166.3 1.850 54.0 0.1766 55.7 0.5667 -44.3 2.600 0.1838 149.7 1.745 49.2 0.1916 55.8 0.5516 -47.1 2.800 0.2014 138.3 1.654 44.8 0.2064 55.5 0.5427 -50.4 3.000 0.2271 127.7 1.575 40.0 0.2225 55.2 0.5268 -53.6 3.500 0.2948 111.7 1.404 29.7 0.2669 53.1 0.4946 -64.2 4.000 0.3597 100.8 1.285 20.2 0.3166 49.7 0.4605 -77.9 4.500 0.4183 93.3 1.184 11.5 0.3706 44.9 0.4286 -94.1 5.000 0.4688 86.4 1.098 3.3 0.4256 39.1 0.4002 -112.2 5.500 0.5177 80.3 1.015 -4.0 0.4780 32.3 0.3825 -132.5 6.000 0.5498 74.4 0.943 -10.6 0.5259 25.0 0.3798 -153.4 ! ! f Fmin Gammaopt rn/50 ! GHz dB MAG ANG - 0.450 1.35 0.60 17 0.40 0.900 1.45 0.50 36 0.40 1.800 1.80 0.31 80 0.37 ! ! SIEMENS AG Semiconductor Group, Munich