! SIEMENS Small Signal Semiconductors ! BF840 ! Si NPN RF Bipolar Junction Transistor in SOT23 ! VCE = 0.75 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 0.6341 -81.5 7.916 133.7 0.0245 46.0 0.7473 -12.7 0.020 0.5911 -119.7 5.035 112.7 0.0310 29.5 0.6531 -12.6 0.050 0.5651 -153.5 2.209 90.8 0.0343 18.5 0.5935 -10.4 0.100 0.5723 -166.4 1.106 74.2 0.0357 19.1 0.5734 -12.3 0.150 0.5843 -171.5 0.717 62.4 0.0365 23.0 0.5598 -15.6 0.200 0.5977 -174.8 0.516 52.8 0.0377 27.3 0.5458 -18.8 0.250 0.6119 -177.5 0.394 45.3 0.0389 32.6 0.5309 -21.9 0.300 0.6227 179.8 0.315 39.5 0.0400 37.7 0.5159 -24.8 0.400 0.6417 174.7 0.219 33.0 0.0437 48.5 0.4908 -30.2 0.500 0.6571 170.8 0.164 31.5 0.0502 58.8 0.4697 -35.1 0.600 0.6684 166.4 0.134 33.7 0.0595 67.1 0.4509 -40.0 0.700 0.6801 162.1 0.116 39.4 0.0713 72.9 0.4344 -44.8 0.800 0.6924 158.2 0.111 46.6 0.0848 76.4 0.4193 -49.7 0.900 0.7024 154.3 0.112 54.5 0.0996 78.5 0.4047 -54.6 1.000 0.7089 150.3 0.120 61.4 0.1159 79.2 0.3907 -59.6 1.100 0.7142 146.5 0.131 65.6 0.1330 79.3 0.3773 -64.6 1.200 0.7218 142.8 0.145 68.3 0.1506 78.6 0.3648 -69.6 1.300 0.7229 139.4 0.163 70.5 0.1684 77.6 0.3520 -74.7 1.400 0.7277 136.0 0.179 70.9 0.1868 76.3 0.3405 -79.8 1.500 0.7321 132.4 0.199 70.0 0.2046 74.7 0.3294 -84.8 1.600 0.7296 129.2 0.220 70.1 0.2226 72.9 0.3184 -90.0 1.700 0.7262 126.1 0.233 68.5 0.2406 71.1 0.3090 -95.1 1.800 0.7308 123.1 0.251 67.9 0.2585 69.1 0.2993 -100.2 1.900 0.7278 120.3 0.271 65.5 0.2755 67.2 0.2896 -105.3 2.000 0.7270 117.2 0.286 65.3 0.2925 65.1 0.2829 -110.3 2.200 0.7210 111.5 0.320 60.4 0.3251 61.0 0.2689 -120.7 2.400 0.7186 106.5 0.349 56.2 0.3561 56.8 0.2580 -130.6 2.600 0.7126 101.0 0.385 52.3 0.3841 52.7 0.2500 -140.8 2.800 0.7039 96.8 0.409 48.5 0.4098 48.7 0.2463 -150.5 3.000 0.6985 92.4 0.431 44.8 0.4330 44.8 0.2435 -160.1 ! ! SIEMENS AG Semiconductor Group, Munich