1/3 www.rohm.com c 2010 rohm co., ltd. all rights reserved. 2010.08 - rev.c general purpose transistors(dual transistors) emt18 / UMT18N / imt18 ? features ? dimensions (unit : mm) 1) two 2sa2018 chips in a emt package. 2) mounting possible with emt3 or umt3 or smt3 automatic mounting machines. 3) transistor elements are independent, eliminating interference. ? structure epitaxial planar type pnp silicon transistor the following characteristics apply to both tr 1 and tr 2 . ? inner circuit (3) (4) (2) (5) (1) (6) tr 2 tr 2 tr 1 tr 1 emt18 / UMT18N (4) (3) (5) (2) (6) (1) imt18 ? absolute maximum ratings (ta=25 ? c) collector-base voltage collector-emitter voltage power dissipation storage temperature emitter-base voltage collector current junction temperature ? 1 single pulse p w = 1ms ? 2 120mw per element must not be exceeded. ? 3 200mw per element must not be exceeded. parameter symbol v cbo v ceo p c tstg limits ? 15 ? 12 150 (total) ? 55 to + 150 unit v v mw c c v ebo i c ? 6 ? 500 ? 1 ? 3 ? 2 v ma i cp 1.0 a tj 150 smt6 300 (total) emt6 umt6 rohm : emt6 each lead has same dimensions abbreviated symbol : t18 emt18 rohm : smt6 eiaj : sc-74 jedec : sot-457 each lead has same dimensions abbreviated symbol : t18 imt18 rohm : umt6 eiaj : sc-88 each lead has same dimensions abbreviated symbol : t18 UMT18N
2/3 www.rohm.com c 2010 rohm co., ltd. all rights reserved. 2010.08 - rev.c data sheet emt18 / UMT18N / imt18 ? electrical characteristics (ta=25 ? c) parameter collector-base breakdown voltage symbol min. typ. max. unit conditions bv cbo ? 15 ?? vi c = ? 10 a i c = ? 1ma i e = ? 10 a v cb = ? 15v v ce = ? 2v, i e = 10ma, f = 100mhz v cb = ? 10v, i e = 0a, f = 1mhz collector-emitter breakdown voltage bv ceo ? 12 ?? v emitter-base breakdown voltage bv ebo ? 6 ?? v collector cutoff current i cbo ??? 0.1 a v cb = ? 6v emitter cutoff current i ebo ??? 0.1 a i c / i b = ? 200ma / ? 10ma collector-emitter saturation voltage v ce (sat) ?? 100 ? 250 mv v ce = ? 2v, i c = ? 10ma dc current transfer ratio h fe 270 ? 680 ? transition frequency f t ? 260 ? mhz output capacitance cob ? 6.5 ? pf ? packaging specifications and h fe package name code taping basic ordering unit (pieces) emt18 UMT18N imt18 t2r 8000 tr 3000 ? ? ?? t110 3000 ? ? type ? electrical characteristic curves 1 2 5 10 20 50 100 200 500 1000 0 0.5 1.0 1 .5 base to emitter voltage : v be (v ) collector current : i c (ma) v ce = 2v fig.1 grounded emitter propagatio n characteristics ta = ? 40 c ta = 25 c ta = 125 c 1 2 5 10 20 50 100 200 500 1000 1 2 5 10 20 50 100 200 500 100 0 collector current : i c (ma) dc current gain : h fe v ce = 2v fig.2 dc current gain vs. collector current ta = ? 40 c ta = 25 c ta = 125 c 1 2 5 10 20 50 100 200 500 1000 1 2 5 10 20 50 100 200 500 100 0 collector current : i c (ma) i c / i b = 20 ta = ? 40 c ta = 25 c ta = 125 c collector saturation voltage : v ce (sat) (mv) fig.3 collector-emitter saturatio n voltage vs. collector current ( )
3/3 www.rohm.com c 2010 rohm co., ltd. all rights reserved. 2010.08 - rev.c data sheet emt18 / UMT18N / imt18 1 2 5 10 20 50 100 200 500 1000 1 2 5 10 20 50 100 200 500 100 0 collector current : i c (ma) ta = 25 c i c / i b = 50 i c / i b = 20 i c / i b = 10 collector saturation voltage : v ce (sat) (mv) fig.4 collector-emitter saturatio n voltage vs. collector current ( ? ) 10 20 50 100 200 500 1000 2000 5000 10000 1 2 5 10 20 50 100 200 500 100 0 collector current : i c (ma) i c / i b = 20 ta = 125 c ta = 25 c ta = ? 40 c baser saturation voltage : v be (sat) (mv) fig.5 base-emitter saturation voltage vs.collecter curren t 1 2 5 10 20 50 100 200 500 1000 1 2 5 10 20 50 100 200 500 100 0 emitter current : i c (ma) transition frequency : f t (mhz) v ce = 2v ta = 25 c fig.6 gain bandwidth product vs . emitter current 1 2 5 10 20 50 100 200 500 1000 0.1 0.2 0.5 1 2 5 10 20 50 10 0 emitter to base voltage : v eb (v ) i e = 0a f = 1mhz ta = 25 c cib cob fig.7 collector output capacitance v s. collector-base voltage emitter input capacitance vs. emitter-base voltage emitter input capacitance : cib ( pf ) collector output capacitance : cob ( pf )
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