BFS482 1 jun-27-2001 npn silicon rf transistor for low-noise. high-gain broadband amplifiers at collector currents from 0.2 ma to 20 ma f t = 8 ghz f = 1.2 db at 900 mhz two (galvanic) internal isolated transistors in one package vps05604 6 3 1 5 4 2 eha07196 6 54 3 2 1 c1 e2 b2 c2 e1 b1 tr1 tr2 esd : e lectro s tatic d ischarge sensitive device, observe handling precaution! type marking pin configuration package BFS482 rgs 1=b 2=e 3=c 4=b 5=e 6=c sot363 maximum ratings parameter symbol value unit collector-emitter voltage v ceo 12 v collector-emitter voltage v ces 20 collector-base voltage v cbo 20 emitter-base voltage v ebo 2 collector current i c 35 ma base current i b 4 total power dissipation t s 81 c 1) p tot 250 mw junction temperature t j 150 c ambient temperature t a -65 ... 150 storage temperature t st g -65 ... 150 thermal resistance junction - soldering point 2) r thjs 275 k/w 1 t s is measured on the collector lead at the soldering point to the pcb 2 for calculation of r thja please refer to application note thermal resistance
BFS482 2 jun-27-2001 electrical characteristics at t a = 25c, unless otherwise specified. parameter symbol values unit min. typ. max. dc characteristics collector-emitter breakdown voltage i c = 1 ma, i b = 0 v (br)ceo 12 - - v collector-emitter cutoff current v ce = 20 v, v be = 0 i ces - - 100 a collector-base cutoff current v cb = 10 v, i e = 0 i cbo - - 100 na emitter-base cutoff current v eb = 1 v, i c = 0 i ebo - - 1 a dc current gain i c = 10 ma, v ce = 8 v h fe 50 100 200 -
BFS482 3 jun-27-2001 electrical characteristics at t a = 25c, unless otherwise specified. parameter symbol values unit min. typ. max. ac characteristics (verified by random sampling) transition frequency i c = 15 ma, v ce = 8 v, f = 500 mhz f t 6 8 - ghz collector-base capacitance v cb = 10 v, f = 1 mhz c cb - 0.3 0.45 pf collector-emitter capacitance v ce = 10 v, f = 1 mhz c ce - 0.12 - emitter-base capacitance v eb = 0.5 v, f = 1 mhz c eb - 0.65 - noise figure i c = 3 ma, v ce = 8 v, z s = z sopt , f = 900 mhz f = 1.8 ghz f - - 1.2 1.9 - - db power gain, maximum stable 1) i c = 10 ma, v ce = 8 v, z s = z sopt , z l = z lopt , f = 900 mhz g ms - 19.5 - power gain, maximum available 2) i c = 10 ma, v ce = 8 v, z s = z sopt , z l = z lopt , f = 1.8 ghz g ma - 13 - transducer gain i c = 10 ma, v ce = 8 v, z s = z l = 50 , f = 900 mhz f = 1.8 ghz | s 21e | 2 - - 15.5 10 - - 1 g ms = | s 21 / s 12 | 2 g ma = | s 21 / s 12 | (k-(k 2 -1) 1/2 )
BFS482 4 jun-27-2001 total power dissipation p tot = f ( t s ) 0 20 40 60 80 100 120 c 150 t s 0 50 100 150 200 mw 300 p tot permissible pulse load r thjs = f ( t p ) 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0 s 1 10 2 10 3 10 k/w r thjs 0.5 0.2 0.1 0.05 0.02 0.01 0.005 d = 0 permissible pulse load p totmax / p totdc = f ( t p ) 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0 s t p 0 10 1 10 2 10 - p totmax / p totdc d = 0 0.005 0.01 0.02 0.05 0.1 0.2 0.5
BFS482 5 jun-27-2001 collector-base capacitance c cb = f ( v cb ) f = 1mhz 0 4 8 12 16 v 24 v cb 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 pf 0.50 c cb transition frequency f t = f ( i c ) v ce = parameter 0 5 10 15 20 25 30 35 ma 45 i c 0.0 1.0 2.0 3.0 4.0 5.0 6.0 ghz 8.0 f t 8v 5v 3v 2v 1v 0.7v power gain g ma , g ms = f ( i c ) f = 0.9ghz v ce = parameter 0 5 10 15 20 25 30 35 ma 45 i c 6 8 10 12 14 16 18 db 22 g 10v 5v 3v 2v 1v 0.7v power gain g ma , g ms = f ( i c ) f = 1.8ghz v ce = parameter 0 5 10 15 20 25 30 35 ma 45 i c 0 2 4 6 8 10 db 14 g 8v 5v 3v 2v 1v 0.7v
BFS482 6 jun-27-2001 intermodulation intercept point ip 3 = f ( i c ) (3rd order, output, z s = z l =50 ) v ce = parameter, f = 900mhz 0 4 8 12 16 20 ma 28 i c 6 8 10 12 14 16 18 20 22 24 dbm 28 ip 3 8v 5v 3v 2v 1v power gain g ma , g ms = f ( v ce ):_____ | s 21 | 2 = f ( v ce ):--------- f = parameter 0 1 2 3 4 5 6 7 8 v 10 v ce 6 8 10 12 14 16 18 db 22 g 0.9ghz 1.8ghz 0.9ghz 1.8ghz i c =10ma power gain | s 21 | 2 = f ( f ) v ce = parameter 0.0 0.5 1.0 1.5 2.0 2.5 ghz 3.5 f 0 2 4 6 8 10 12 14 16 18 20 22 24 db 28 s 21 8v 1v 0.7v i c =10ma power gain g ma , g ms = f ( f ) v ce = parameter 0.0 0.5 1.0 1.5 2.0 2.5 ghz 3.5 f 0 4 8 12 16 20 24 db 32 g 8v 1v 0.7v i c =10ma
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