! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 25 V IC = 6 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 0.8488 -14.5 13.709 169.9 0.0014 83.6 0.9975 -0.7 0.020 0.8278 -28.6 13.161 160.5 0.0024 74.5 0.9927 -1.5 0.050 0.7262 -64.2 10.744 137.5 0.0049 61.5 0.9745 -2.9 0.100 0.6011 -102.2 7.262 115.1 0.0068 54.5 0.9537 -3.8 0.150 0.5504 -123.8 5.266 102.9 0.0078 56.0 0.9465 -4.7 0.200 0.5272 -137.2 4.073 94.4 0.0087 60.2 0.9438 -5.5 0.250 0.5185 -146.4 3.308 88.0 0.0095 66.2 0.9418 -6.5 0.300 0.5180 -153.5 2.780 82.7 0.0104 71.2 0.9401 -7.4 0.400 0.5243 -163.8 2.086 73.9 0.0124 83.8 0.9414 -9.5 0.500 0.5386 -171.1 1.666 66.1 0.0154 95.1 0.9427 -11.8 0.600 0.5498 -177.6 1.375 59.4 0.0195 104.9 0.9423 -14.1 0.700 0.5640 176.7 1.169 53.2 0.0252 112.8 0.9426 -16.4 0.800 0.5805 171.6 1.013 47.3 0.0316 117.4 0.9441 -18.8 0.900 0.5965 166.9 0.887 41.6 0.0397 121.1 0.9436 -21.4 1.000 0.6076 162.3 0.786 36.5 0.0488 122.8 0.9449 -23.9 1.100 0.6250 157.9 0.700 31.6 0.0593 124.1 0.9463 -26.5 1.200 0.6431 153.6 0.625 27.1 0.0709 124.1 0.9448 -29.2 1.300 0.6506 149.6 0.556 22.9 0.0837 123.8 0.9433 -32.0 1.400 0.6653 145.8 0.502 19.7 0.0977 122.7 0.9438 -34.7 1.500 0.6758 141.7 0.446 16.0 0.1125 121.3 0.9418 -37.6 1.600 0.6864 137.8 0.399 13.2 0.1285 119.5 0.9372 -40.6 1.700 0.6976 134.3 0.350 10.4 0.1456 117.8 0.9365 -43.5 1.800 0.7045 130.5 0.304 9.7 0.1633 115.7 0.9327 -46.5 1.900 0.7144 127.3 0.267 8.1 0.1819 113.4 0.9257 -49.6 2.000 0.7260 123.3 0.226 10.3 0.2010 111.1 0.9213 -52.6 2.200 0.7363 116.1 0.168 17.2 0.2410 106.0 0.9071 -59.1 2.400 0.7459 109.5 0.134 36.1 0.2821 100.4 0.8890 -65.5 2.600 0.7531 102.7 0.149 60.0 0.3238 94.8 0.8685 -72.2 2.800 0.7526 96.5 0.188 72.3 0.3650 89.3 0.8462 -78.9 3.000 0.7530 90.4 0.243 76.7 0.4037 83.7 0.8179 -85.5 ! ! SIEMENS AG Semiconductor Group, Munich