! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 8 V IC = 8 mA ! Common Emitter S-Parameters: January 1996 # GHz S MA R 50 ! f S11 S21 S12 S22 ! GHz MAG ANG MAG ANG MAG ANG MAG ANG 0.010 0.7379 -22.2 17.483 166.2 0.0015 82.1 0.9933 -1.3 0.020 0.7138 -42.9 16.229 153.8 0.0031 69.2 0.9845 -2.3 0.050 0.6342 -88.6 11.798 127.3 0.0055 56.0 0.9533 -3.7 0.100 0.5729 -126.3 7.193 106.1 0.0070 51.9 0.9312 -4.5 0.150 0.5613 -143.5 5.016 95.3 0.0082 57.1 0.9248 -5.5 0.200 0.5578 -153.8 3.810 87.6 0.0091 63.5 0.9232 -6.6 0.250 0.5617 -160.5 3.060 81.6 0.0104 70.2 0.9230 -7.8 0.300 0.5682 -165.7 2.549 76.5 0.0116 78.4 0.9212 -9.0 0.400 0.5819 -173.6 1.892 68.0 0.0146 92.0 0.9224 -11.8 0.500 0.5961 -179.6 1.497 60.3 0.0192 101.8 0.9222 -14.6 0.600 0.6114 175.1 1.225 53.6 0.0251 110.5 0.9220 -17.6 0.700 0.6240 170.2 1.034 47.4 0.0332 115.6 0.9206 -20.5 0.800 0.6411 165.7 0.887 41.6 0.0420 119.0 0.9199 -23.6 0.900 0.6543 161.4 0.772 36.1 0.0527 120.7 0.9174 -26.7 1.000 0.6670 157.1 0.678 31.2 0.0649 121.0 0.9151 -30.0 1.100 0.6800 152.9 0.597 26.4 0.0787 121.0 0.9134 -33.2 1.200 0.6967 149.0 0.525 22.7 0.0936 119.9 0.9083 -36.5 1.300 0.6998 145.0 0.461 19.1 0.1095 118.5 0.9032 -40.0 1.400 0.7136 141.2 0.409 16.8 0.1268 116.7 0.8972 -43.4 1.500 0.7237 137.5 0.360 14.6 0.1446 114.7 0.8918 -46.8 1.600 0.7291 133.6 0.311 13.7 0.1637 112.3 0.8833 -50.4 1.700 0.7356 130.3 0.272 12.8 0.1832 109.8 0.8747 -54.0 1.800 0.7438 126.8 0.233 15.0 0.2036 107.2 0.8656 -57.7 1.900 0.7491 123.5 0.202 18.6 0.2251 104.4 0.8532 -61.3 2.000 0.7531 119.6 0.175 26.6 0.2458 101.6 0.8429 -64.9 2.200 0.7543 112.8 0.164 43.7 0.2888 95.9 0.8165 -72.4 2.400 0.7540 106.3 0.182 60.2 0.3313 89.9 0.7870 -79.8 2.600 0.7561 100.0 0.227 68.2 0.3720 83.9 0.7562 -87.3 2.800 0.7493 94.5 0.280 69.2 0.4111 78.1 0.7259 -94.8 3.000 0.7381 88.9 0.330 68.7 0.4466 72.4 0.6922 -102.3 ! ! SIEMENS AG Semiconductor Group, Munich