! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 1.5 V IC = 5 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 0.7677 -25.9 11.894 163.4 0.0042 77.8 0.9737 -2.6 0.020 0.7254 -48.3 10.746 149.8 0.0080 64.9 0.9529 -4.6 0.050 0.6322 -93.9 7.563 123.3 0.0134 47.1 0.8934 -6.8 0.100 0.5713 -129.5 4.560 102.6 0.0161 39.6 0.8558 -7.8 0.150 0.5612 -145.8 3.179 91.8 0.0171 42.3 0.8442 -9.2 0.200 0.5613 -155.1 2.422 83.7 0.0183 47.6 0.8390 -10.9 0.250 0.5662 -161.4 1.950 77.3 0.0196 53.8 0.8351 -12.8 0.300 0.5751 -166.2 1.631 71.5 0.0210 60.3 0.8309 -14.7 0.400 0.5917 -173.9 1.214 61.7 0.0253 73.7 0.8247 -18.9 0.500 0.6082 -179.6 0.957 52.9 0.0315 84.4 0.8173 -23.2 0.600 0.6250 174.9 0.781 45.3 0.0399 92.9 0.8087 -27.7 0.700 0.6396 170.1 0.654 38.7 0.0510 98.5 0.7983 -32.0 0.800 0.6562 165.4 0.554 32.6 0.0636 101.7 0.7873 -36.6 0.900 0.6688 161.1 0.474 27.9 0.0782 103.0 0.7737 -41.2 1.000 0.6799 156.7 0.407 23.8 0.0945 103.1 0.7607 -45.7 1.100 0.6940 152.2 0.350 20.9 0.1122 102.5 0.7462 -50.3 1.200 0.7052 147.9 0.301 19.9 0.1309 101.0 0.7319 -54.8 1.300 0.7093 144.2 0.257 20.4 0.1504 99.3 0.7150 -59.5 1.400 0.7172 140.4 0.227 23.5 0.1709 97.2 0.6987 -64.0 1.500 0.7248 136.3 0.202 28.1 0.1912 94.7 0.6812 -68.5 1.600 0.7270 132.7 0.187 34.9 0.2115 92.0 0.6618 -73.1 1.700 0.7313 129.2 0.180 41.3 0.2331 89.4 0.6450 -77.6 1.800 0.7302 125.6 0.183 50.0 0.2539 86.7 0.6268 -82.1 1.900 0.7325 122.4 0.194 55.3 0.2746 83.9 0.6065 -86.6 2.000 0.7319 118.9 0.209 60.6 0.2945 81.2 0.5902 -91.0 2.200 0.7280 112.6 0.249 63.6 0.3334 75.6 0.5548 -99.8 2.400 0.7224 106.5 0.292 63.3 0.3708 70.0 0.5225 -108.5 2.600 0.7154 100.9 0.339 61.0 0.4034 64.7 0.4912 -117.1 2.800 0.7068 96.2 0.381 57.9 0.4341 59.6 0.4651 -125.5 3.000 0.6958 91.5 0.414 54.6 0.4607 54.7 0.4401 -134.1 ! ! SIEMENS AG Semiconductor Group, Munich