! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 5 V IC = 4.5 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 0.8577 -1.7 12.480 178.0 0.0013 90.1 0.9919 -0.8 0.020 0.8494 -3.5 12.466 176.1 0.0030 88.7 0.9828 -1.7 0.050 0.8466 -8.9 12.371 171.1 0.0080 84.7 0.9859 -4.1 0.100 0.8238 -17.1 12.087 163.0 0.0157 80.6 0.9702 -8.0 0.150 0.7847 -25.3 11.660 153.9 0.0228 75.4 0.9388 -11.7 0.200 0.7432 -32.5 11.031 147.1 0.0291 73.3 0.9079 -14.6 0.250 0.6928 -39.6 10.447 140.0 0.0349 70.6 0.8746 -17.0 0.300 0.6401 -45.4 9.795 133.9 0.0399 68.4 0.8392 -18.9 0.400 0.5537 -55.7 8.533 124.6 0.0484 65.0 0.7788 -21.7 0.500 0.4703 -64.1 7.411 115.9 0.0555 63.5 0.7320 -23.2 0.600 0.4040 -71.7 6.617 109.0 0.0627 62.7 0.6945 -24.2 0.700 0.3470 -78.3 5.915 103.3 0.0686 62.5 0.6641 -24.9 0.800 0.3017 -84.3 5.306 98.2 0.0748 62.3 0.6424 -25.4 0.900 0.2620 -88.6 4.798 93.9 0.0812 62.3 0.6259 -25.9 1.000 0.2292 -94.2 4.416 90.1 0.0873 62.7 0.6126 -26.5 1.100 0.2006 -100.6 4.090 86.5 0.0937 63.0 0.6022 -27.1 1.200 0.1694 -108.0 3.793 83.0 0.1007 62.9 0.5928 -27.8 1.300 0.1500 -113.1 3.530 80.0 0.1069 63.2 0.5846 -28.5 1.400 0.1242 -121.0 3.311 76.9 0.1135 63.4 0.5781 -29.3 1.500 0.1149 -126.5 3.136 74.3 0.1202 63.3 0.5721 -30.2 1.600 0.0979 -140.5 2.950 71.1 0.1273 63.2 0.5662 -31.0 1.700 0.0907 -150.7 2.802 68.7 0.1344 63.3 0.5603 -31.9 1.800 0.0809 -165.4 2.676 66.3 0.1414 63.0 0.5562 -33.1 1.900 0.0835 -177.9 2.564 63.8 0.1489 62.9 0.5511 -34.2 2.000 0.0851 170.0 2.453 61.3 0.1564 62.5 0.5473 -35.3 2.200 0.0972 149.0 2.264 56.8 0.1718 62.0 0.5363 -37.9 2.400 0.1151 132.8 2.119 52.2 0.1873 61.2 0.5262 -40.6 2.600 0.1414 122.5 1.991 48.1 0.2043 60.2 0.5130 -43.5 2.800 0.1643 115.5 1.885 44.2 0.2207 59.0 0.5027 -46.7 3.000 0.1869 110.8 1.787 39.9 0.2378 57.7 0.4882 -50.0 3.500 0.2576 101.7 1.590 30.4 0.2825 53.9 0.4514 -60.3 4.000 0.3182 95.4 1.460 21.5 0.3302 49.3 0.4109 -73.5 4.500 0.3779 90.7 1.347 13.0 0.3794 44.0 0.3717 -89.0 5.000 0.4324 85.7 1.254 4.8 0.4288 38.0 0.3393 -106.6 5.500 0.4792 80.5 1.160 -2.9 0.4755 31.5 0.3175 -127.1 6.000 0.5218 75.5 1.082 -10.0 0.5197 24.6 0.3120 -148.2 ! ! SIEMENS AG Semiconductor Group, Munich