BC121 SIEMENS | Alldatasheet
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25C D M™ 6235605 0004097 9 MMSIEG. .7-QYZ-/7 | NPN Silicon Transistors SIEMENS AKTIENGESELLSCHAF C121 ; BC 122 { BE 1238, i a BC 121, BC 122, and BC 123 are miniature epitaxial NPN silicon planar transistors in U 32 $ plastic encapsulation. The types are marked by a color line onthe case: BC 121 yellow, BC 122 white, BC 123 red. The transistors are particularly intended for use in low noise AF . amplifier stages and as complementary transistors to BC 201, BC 202, and BC 203. : Type Ordering code BC 121”) 60203-x121 Suren gin 3 BC 121 white | Q60203-x121-x9 1-025 06085 8 3 BC-121 yellow | Q60203-X121-X4 Q rf ; BC 121 green Q60203-X121-S6 € . BC 121 blue Q60203-X121-X6 24 15 : Bc 1220) 060203-x122 M 7 BC 122white | 060203-X122-x9 Approx. weight20mg Dimensions in mm BC 122 yellow | 60203-X122-X4 BC 122green | 60203-X122-x10 BC 122 blue 060203-X122-X6 Bc 1231) 060203-X123 BC 123white | 60203-x123-x9 : BC 123 yellow | 60203-X123-x4 BC 123 green | 60203-X123-X6 Maximum ratings Bc121 | Bc122__| BC123 Collector-emitter voltage Voz | 5 20 30 v Collector-base voltage Veo | 5 30 45 v . Emitter-base voltage Veno | 5 5 5 v Collector current I 78 75 78 mA . Emitter current Ie 86 85 85 mA Base current Ig 10 10 10 mA Junction temperature yj 150 150 150 °C ‘Storage temperature range Tg -55 to 55 to -55 to °c S : +125 +126 +125 t Total power dissipation : Lead length L = 2mm; 5 see diagram?) Rtn = f (L) Prot 250 250 250 mw Thermal resistance : see diagram?) Ryn =f (L) Riwa | sto00 | <to00 | <1000 | Kw . 1) If the order does not include any exact indication of the current amplification group desired, a transistor of a current amplification group just available from stock will be delivered, - 2) (page 146) : — 143 | 1573 G-14
25C D mm 823Sb05 co04058 Oo MMSIEG 9 T~X9-/7 IEMENS AKTIENGESELLSCHAF BC 121 s BC 122 BC 123 Static characteristics (Tamp = 25°C) . . The transistors are grouped according to the small signal current gain hye and marked by a color line, At a voltage of Vce = 2 V and the collector currents listed below, the following static characteristics apply: hye groups | white yellow green blue Type BC 121 BC 121 BC 121 BC 121 BC 121 Bc122 |ec122 | Bc1z2 |Bc122 | Bc122 BC 123 BC123 | BC 123 - BC 123 Ic Dee Peg bee hee Vee mA Ile Iollg Iellg Io/lp mV -0.01 63 110 180 330 530 0.25 100 175 290 520 560 (500-630) 10 128 220 320 620 610 Static characteristics (Temp = 25°C) . Saturation voltages Voesat Vocsat Bc 121 | Bc 122 | BC 123 Collector cutoff current (ego = 26 V) Teno - - <10 | nA Collector cutoff current (ego = 18 V) Iepo - <to | - nA . Collector cutoff current (Wego = 2V) Icao <t0 | - - nA Collector-emitter breakdown voltage Uceo = 100 uA) Vericeo | >5 >20 |>30 |v Collector-base breakdown voltage (lego = 100 pA) Vericeo | >5 >30 |>48 |v Emitter-base breakdown . voltage (ego = 100 yA) Viereso | >8 > >5 v 144 soe
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“@5¢ D MM 6235605 0004099 2 MMSIEG .. - SIEMENS AKTIENGESELLSCHAF BC121 , T-29-17 BC 122 BC 123 . é Dynamic characteristics (Tamp = 25°C) BC 121 | BC122 | BC123 i Transition frequency i (Uc = 250 pA; Veg = 0.5 V) fr 50 50 60 MHz Transition frequency {Ue = 10 mA; Vog = 0.8 V) fr 250 260 260 MHz Collector-base capacitance (Veg = 2 V; f= 1 MHz) Ccso | 4.4(<11) | - - pF Collector-base capacitance Vepo = 10 V; f= 1 MHz) Cao | = 3.6 (<7) | 3.6(<7) | pF * Noise figure ([¢ = 200 pA; Veg = 0.6 V; f= 1 kHz; . Current gain groups The transistors BC 121, BC 122, BC 123 are grouped according to the small signal current gain hr, and are marked by a color line. Operating point: Vog = 0.6 V; Ic = 260 pA; f = 1 kHz Color {ine white yellow green blue 5 Type BC 121 BC 121 BC 121 BC 121 ” BC 122 BC 122 BC 122 BC 122 : BC 123 BC 123 BC 123 - ‘Small signal current gain hy, | 76 to 150 126 to 260 | 240to500 | 450 to 900
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-.25C D MM 8235605 O004100 5 MESIEG —-. : . —_ _ SIEMENS ARTE ESE SHAE sti T-24-/7 Bc122. Total perm. power dissipation ne “ | Ww . 123 Ww i Coo "TOOT ne HECEECEECE HTT Si testtas HTT DSC Newel CCP eC) KE Ngee CE TTT 1 Oe LNee\\ NCCP wf TT BBR AE NEETETEE WT ININN NH : HSM = COTTTIEY CECECSSSSACHH CTT peepee] H y sig it at the : CCE) CTT rut. — . ‘ : ; Tins + dean = BC 121, BC 122, BC 127 yellow eicasartoger ° a # aa ee BEERS | Re ail at t COCR Feet tHiie—t Hite Hie BSSacr Fea w LL LLL we —k ; og 146 1576 A-03
25¢ D M™ 8235605 ooounoL 2 MESIEG Ft QGe/7- OO SIEMENS AKTIENGESELLSCHAF BC 121 . BC 122 . BE 123 ‘ ‘Output characteristics fe =f (Vee): Quiputcharataaton = ed j drt ene niguetion floremon emir configuration) : Ms 08 : 80121, BC 122, BC123 4A __ ‘Be121, BC122, 86123 ; Wess TTT TE al | t WAHL & IA eu f MOC Cel ff COCO WA errr soe coe ACP EEE) Vee | Feecer : Vf pee a é eT eho Me Hee HT tn suaaeanee a TT aCCLE LLC tn CT Pte ELE Ltt tt 0 n 20 av . t} 1 2 EI] 4 ov 7 oe Ne Collectar-emitter saturation voltage ‘Base-emitter saturation voltage Mees 30: Fey = parameter Meet oy a= parameter Cero’ eteFeontiguraton) {common emitter configuration) " BC 121, C122, BC123 z BC 121, 86122, BC123 SSeS ESEeSe . =====—=——— ead coceceae , EEEEEESEFE | GE a oA ELLE 1 ECE Gee CCeee eee COCC Ca o MEET TTL eo LLU IA | i { — —Seatering ima Z tf : sence — A] oo el LUA
0 OF 02 08 04 O5 O06V 0 Os yy
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25C Dm 8235b05 ouou1o2 9 maSTEG TH I9-/7 SIEMENS AKTIENGESELLSCHAF BC 121 BC 122 BS 123 Collector cutoff current versus . . Pett Tego = 1 Trent) Taracningieny =f ! mA BC 121, 8C122, BC123 MHZ: BC 121, BC122, BC 123 w EEEEEEEEEREEEEH EEE ERE { Frias 7 {Fe coi w LLL oe UM TIT EEREEEEREEEEEEH FEES F ren err ‘ § FERRER AEEEEEH SEH EHH Eee a aml : LUT we Tl EOeECEEEEEEELH ati met an oA TTT CUM CNM TTT 0 50 100 150°C wt 5 10 5 tot 5 07m — Tent —+h Callsctornses epacitanes Sees f ee) veeay moore =f Mee) (common emitter configuration) oe BC 121, BC 122, 8C123 “ BC 121, 80122, BC123 eo To ==Se=====— geo CT s PEER EER EES : | 6 FRR 1 ecient | oS Co | LEE t S===s=s==>) NEC ra el TTT FEES BS ltes CPI CEC YS S========== oC LLL EET TT 0 5 10° v5 Vv 0 05 wv —> Vee01Yee0 — Vee “8 1578 A-05 .
_25C D MM 8235605 0004103 O mmSIEG. - : . GONLO3 O MESTEG | 72 IY -/7 SIEMENS AKTIENGESELLSCHAF BC 121 BC 122 ; ETT BE 123 : Nolge figure NF = f(f) Noise figure NF=1 (Vee) i (Rg = 2KO, Voe = 5 V, f= 0.2 mA) Ug = 0.21mA, Rg = 2 KO, f= 1kH2) : eB BC 121, BC 122, BC123 ee 8C121, BC122, 66123 TT Coo oo 0 | CI Cnn Coon : oe COE Pe Co CTT Oc CC Col SONIC CIC : . CON Co Co Coc CoCo a ae Cr Ceo Cons CCoT CO a a : CoCo CCT Coen Con Cor : eI NCC oC Con £ oo Xn Co CoCo Co Col : Coo NCO aa CONE CO a a ; a A ee SCC CN oc CI CNT CoCo Co a a a [Rea EH am a conc Co COLO a : wt 6 wt 5 10° SOT Ki wt 5 1° | 5 Mt 5 107V —T — Vee . ‘Nolee figure NF =f (Ic) (Wee = 6 V; f= 1 kHz, Temp = 25°C) eB “BC121, BC 122, BC123 oT CO CECE CT ve COE : COM EC ACT sO NTT CCT ACCC ZC A OCT Tye COA FA : AM 7 a AY foam flix CNM LAT LAT coy : CANE CAM CATE A COENEN CT SCH KON SUA AZ . Det Sei ale cil aac Eerie rr Cm CU oC CLE CCT we oh? 0? 108A ‘ 149