! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 V IC = 3 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 0.8307 -23.6 7.897 163.5 0.0092 75.9 0.9574 -3.8 0.020 0.7755 -43.8 7.127 150.2 0.0170 62.7 0.9255 -6.8 0.050 0.6476 -86.7 5.108 123.9 0.0283 41.5 0.8380 -10.1 0.100 0.5529 -123.2 3.088 101.9 0.0328 30.1 0.7822 -11.0 0.150 0.5300 -140.6 2.145 90.1 0.0342 28.6 0.7649 -12.5 0.200 0.5255 -150.6 1.634 81.3 0.0346 30.2 0.7558 -14.3 0.250 0.5302 -157.3 1.321 74.2 0.0348 33.5 0.7483 -16.6 0.300 0.5394 -162.3 1.107 67.9 0.0354 37.6 0.7420 -18.9 0.400 0.5545 -170.4 0.829 57.1 0.0368 48.4 0.7300 -23.9 0.500 0.5746 -176.4 0.654 47.7 0.0411 60.0 0.7174 -28.9 0.600 0.5935 177.9 0.533 40.1 0.0478 70.6 0.7026 -34.1 0.700 0.6113 172.8 0.445 33.6 0.0580 79.0 0.6869 -39.2 0.800 0.6271 167.9 0.373 28.4 0.0703 84.2 0.6709 -44.4 0.900 0.6442 163.2 0.316 25.5 0.0851 87.4 0.6533 -49.6 1.000 0.6542 158.7 0.270 23.7 0.1017 88.7 0.6350 -54.7 1.100 0.6670 154.2 0.235 24.5 0.1197 89.1 0.6165 -59.8 1.200 0.6803 150.0 0.205 27.3 0.1386 88.4 0.5985 -64.9 1.300 0.6845 145.9 0.184 32.4 0.1578 87.2 0.5787 -69.9 1.400 0.6912 142.3 0.176 39.6 0.1779 85.5 0.5601 -74.9 1.500 0.7002 138.1 0.175 45.2 0.1975 83.6 0.5415 -79.7 1.600 0.7023 134.4 0.183 52.7 0.2176 81.3 0.5229 -84.7 1.700 0.7062 130.9 0.192 56.3 0.2376 79.0 0.5059 -89.5 1.800 0.7062 127.6 0.209 60.0 0.2570 76.8 0.4891 -94.3 1.900 0.7071 124.3 0.225 60.7 0.2763 74.4 0.4712 -99.1 2.000 0.7079 120.9 0.246 63.3 0.2951 72.0 0.4568 -103.7 2.200 0.7053 114.7 0.287 61.6 0.3317 67.0 0.4281 -113.2 2.400 0.7002 108.9 0.324 59.2 0.3649 62.2 0.4023 -122.4 2.600 0.6990 103.2 0.364 56.0 0.3952 57.4 0.3800 -131.7 2.800 0.6910 98.8 0.401 51.7 0.4238 52.9 0.3634 -140.6 3.000 0.6845 94.0 0.425 48.8 0.4482 48.5 0.3479 -149.5 ! ! SIEMENS AG Semiconductor Group, Munich