! SIEMENS Small Signal Semiconductors ! BFR181 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 8 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 0.7243 -4.9 16.914 176.5 0.0024 88.9 0.9354 -1.8 0.020 0.7173 -9.2 16.679 172.7 0.0052 80.4 0.9299 -3.6 0.050 0.6985 -23.4 16.301 162.1 0.0121 78.9 0.9078 -8.8 0.100 0.6276 -44.5 14.649 146.7 0.0221 70.6 0.8384 -15.7 0.150 0.5484 -62.0 12.670 133.7 0.0295 63.4 0.7666 -19.8 0.200 0.4871 -77.3 10.966 124.3 0.0347 60.9 0.7010 -22.0 0.250 0.4307 -89.4 9.474 116.9 0.0389 58.7 0.6516 -23.1 0.300 0.3918 -100.0 8.317 111.2 0.0431 58.7 0.6188 -23.4 0.400 0.3388 -118.7 6.588 102.5 0.0506 59.2 0.5704 -23.3 0.500 0.3031 -134.2 5.391 95.4 0.0573 60.3 0.5394 -23.1 0.600 0.2863 -145.2 4.623 90.1 0.0650 61.1 0.5220 -23.2 0.700 0.2759 -156.2 4.028 85.2 0.0723 62.2 0.5104 -23.5 0.800 0.2688 -165.4 3.543 81.0 0.0803 63.0 0.5018 -23.9 0.900 0.2648 -174.4 3.161 76.9 0.0885 63.8 0.4940 -24.6 1.000 0.2680 177.1 2.876 73.5 0.0964 64.4 0.4870 -25.5 1.100 0.2733 170.3 2.648 70.2 0.1045 64.8 0.4818 -26.7 1.200 0.2726 164.7 2.456 67.0 0.1129 64.8 0.4768 -27.8 1.300 0.2769 159.7 2.280 64.2 0.1215 64.8 0.4735 -29.0 1.400 0.2848 154.1 2.135 61.4 0.1299 64.6 0.4703 -30.4 1.500 0.2842 149.1 2.021 58.5 0.1384 64.5 0.4673 -31.6 1.600 0.2992 144.3 1.896 55.4 0.1475 64.2 0.4631 -33.2 1.700 0.3081 139.8 1.790 52.7 0.1561 64.0 0.4581 -34.6 1.800 0.3181 135.9 1.709 50.3 0.1657 63.4 0.4536 -36.5 1.900 0.3254 132.7 1.637 47.7 0.1748 63.0 0.4480 -38.2 2.000 0.3319 128.7 1.567 45.3 0.1843 62.4 0.4444 -40.0 2.200 0.3519 122.4 1.440 40.5 0.2031 61.1 0.4333 -43.7 2.400 0.3732 116.7 1.354 35.9 0.2226 59.7 0.4189 -47.7 2.600 0.3978 111.1 1.268 31.7 0.2423 58.0 0.4064 -51.9 2.800 0.4158 106.1 1.198 27.7 0.2634 56.3 0.3906 -57.0 3.000 0.4389 101.9 1.132 23.8 0.2829 54.3 0.3740 -61.9 3.500 0.4958 92.6 0.997 14.9 0.3360 48.9 0.3293 -78.2 4.000 0.5381 85.3 0.904 7.2 0.3874 42.7 0.2874 -99.0 4.500 0.5809 78.7 0.822 0.7 0.4376 35.8 0.2585 -124.8 5.000 0.6099 72.7 0.760 -5.1 0.4829 28.8 0.2563 -151.0 5.500 0.6332 67.5 0.708 -9.5 0.5218 21.7 0.2771 -175.4 6.000 0.6456 62.3 0.670 -13.3 0.5546 14.2 0.3087 162.5 ! ! SIEMENS AG Semiconductor Group, Munich