2SC4843 2003-03-19 1 toshiba transistor silicon npn epitaxial planar type 2SC4843 vhf~uhf band low noise amplifier applications low noise figure, high gain. nf = 1.1db, |s 21e | 2 = 15.5db (f = 1 ghz) maximum ratings (ta 25c) characteristics symbol rating unit collector-base voltage v cbo 20 v collector-emitter voltage v ceo 10 v emitter-base voltage v ebo 1.5 v base current i b 20 ma collector current i c 40 ma collector power dissipation p c 100 mw junction temperature t j 125 c storage temperature range t stg 55~125 c microwave characteristics (ta 25c) characteristics symbol test condition min typ. max unit transition frequency f t v ce 8 v, i c 20 ma 7 10 ghz s 21e 2 (1) v ce 8 v, i c 20 ma, f 1 ghz 12 15.5 insertion gain s 21e 2 (2) v ce 8 v, i c 20 ma, f 2 ghz 9 db nf (1) v ce 8 v, i c 5 ma, f 1 ghz 1.1 2.5 noise figure nf (2) v ce 8 v, i c 5 ma, f 2 ghz 1.7 db electrical characteristics (ta 25c) characteristics symbol test condition min typ. max unit collector cut-off current i cbo v cb 10 v, i e 0 1 a emitter cut-off current i ebo v eb 1 v, i c 0 1 a dc current gain h fe v ce 8 v, i c 20 ma 50 250 output capacitance c ob 0.8 pf reverse transfer capacitance c re v cb 10 v, i e 0, f 1 mhz (note) 0.45 0.9 pf note: c re is measured by 3 terminal method with capacitance bridge. unit: mm jedec D jeita D toshiba 2-2k1a weight: 0.006 g (typ.)
2SC4843 2003-03-19 2 marking
2SC4843 2003-03-19 3
2SC4843 2003-03-19 4 s-parameter z o 50 , ta 25c v ce 8 v, i c 5 ma frequency s11 s21 s12 s22 mhz mag ang mag ang mag ang mag ang 200 0.760 47.2 10.933 146.8 0.043 63.8 0.859 27.2 400 0.651 83.8 8.697 125.2 0.068 50.1 0.671 42.8 600 0.629 112.6 6.938 111.4 0.079 43.6 0.545 51.3 800 0.590 132.4 5.621 102.2 0.085 41.6 0.463 56.5 1000 0.579 148.9 4.645 94.4 0.091 41.0 0.413 60.8 1200 0.559 157.4 3.953 89.1 0.095 41.7 0.382 64.5 1400 0.547 166.0 3.457 84.5 0.099 43.3 0.362 68.1 1600 0.521 170.2 3.052 80.5 0.103 45.3 0.350 71.8 1800 0.512 174.5 2.752 76.9 0.107 47.2 0.344 75.2 2000 0.536 177.5 2.534 73.6 0.113 49.3 0.341 78.7 v ce 8 v, i c 20 ma frequency s11 s21 s12 s22 mhz mag ang mag ang mag ang mag ang 200 0.551 93.3 22.441 127.0 0.030 55.6 0.622 46.5 400 0.511 132.8 13.552 107.5 0.040 52.6 0.393 59.9 600 0.517 151.6 9.551 98.0 0.049 55.2 0.299 65.0 800 0.514 163.6 7.326 92.1 0.057 58.7 0.250 68.7 1000 0.520 172.3 5.966 87.3 0.067 60.8 0.225 72.2 1200 0.527 178.0 4.961 84.0 0.077 62.7 0.211 75.6 1400 0.526 176.6 4.322 80.6 0.086 64.1 0.206 80.0 1600 0.528 172.9 3.820 77.5 0.096 65.4 0.203 84.1 1800 0.534 169.3 3.428 74.3 0.105 66.3 0.203 87.4 2000 0.529 166.7 3.132 71.6 0.115 67.0 0.209 91.1
2SC4843 2003-03-19 5
2SC4843 2003-03-19 6
2SC4843 2003-03-19 7 toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707ea a restrictions on product use
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