wee : -05C D MM 8235605 000405? 4 MMSIEG - NPN Silicon Transistors SIEMENS AKTIENGESELLSCHAF C121 BC 122 BC 123 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") 060203-X121 Curent gain BC 121 white 060203-X121-X9 g BC-121 yellow Q60203-X121-x4 4 BC 121 green Q60203-X121-S6 BC 121 blue 0Q60203-X121-X6 BC 1221) Q60203-X122 BC 122 white Q60203-X122-xX9 Approx. weight 20 mg Dimensions in mm BC 122 yellow Q60203-X122-X4. BC 122 green Q60203-X122-X10 BC 122 blue Q60203-X122-X6 BC 1231) Q60203-X123 BC 123 white Q60203-X123-X9 BC 123 yellow Q60203-X123-X4 BC 123 green Q60203-X123-X5 Maximum ratings BC 121 BC 122 BC 123 Collector-emitter voltage Voeo 5 20 30 Vv Collector-base voltage Vero 5 30 45 Vv Emitter-base voltage Vego 5 5 5 Vv Collector current Ig 75 75 75 mA Emitter current Ie 85 85 85 mA Base current Ig 10 10 10 mA Junction temperature Tj 150 150 150 C Storage temperature range Tstg 55 to -55 to 55 to C . +125 +125 +125 Total power dissipation Lead length L = 2 mm; see diagram! Ry, = f (L) Prot 250 250 250 mw Thermal resistance see diagram?) Ri, = f (L) Ring $1000 $1000 1000 K/W 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 wilt be delivered. - 2) (page 146) 1573 6-14 143 fat tiene Aa lana, dag waders 1 ve ae tur 4 ataoe25 D MM 8235b05 0004098 O MMSIEG 9 7-29 -/7 BC 121 STEMENS AKTIENGESELLSCHAF BC 122 BC 123 Static characteristics (T,,,, = 25C) The transistors are grouped according to the small signal current gain hy, and marked by a color line. At a voltage of Vog = 2 V and the collector currents listed below, the following static characteristics apply: hte groups white yellow green blue Type BC 121 BC 121 BC 121 BC 121 BC 121 BC 122 BC 122 BC 122 BC 122 BC 122 BC 123 BC 123 BC 123 ~ BC 123 Ie hee hee hee hee Vee mA Ie/Ig Io/ Ig Io/lg Ie/Ig mV -0.01 63 110 180 330 530 0.25 100 175 290 20 560 (500-630) 10 125 220 320 620 610 Static characteristics (T3,,) = 25C) Saturation voltages Veesat Veesat | (Ue = 10 mA; Jg = 0.5 mA) 0.07 (<0.2) | 0.73 (<0.83) | Vv Vv (Uc = 50 mA; Ig = 2.5 mA) 0.13 (<0.4) | 0.82 (>0.95) BC 121 | BC 122 | BC 123 Collector cutoff current (Vcgo = 26 V) Iego - - <10 nA Collector cutoff current (Vego =15 V) Tego - <10 - nA Collector cutoff current (Vogo = 2 V) Tega <10 - - nA Collector-emitter breakdown voltage ceo = 100 A) Visriceo >5 >20 >30 Vv Collector-base breakdown voltage (Icgo = 100 pA) Visricao >5 >30 >45 Vv Emitter-base breakdown . voltage (ego = 100 pA) Viprieso >6 >5 >5 Vv 144 1574 A-O1 we weke - . oe ve am ae asc D M 8235605 OOO4O99 2 MMSIEG SIEMENS AKTIENGESELLSCHAF BC 121 T-29-/9 BC 122 BC 123 ' F Dynamic characteristics (Tamb = 25C) | pc121 | BC 122 | BC 123 | i Transition frequency ; (Ig = 250 pA; Veg = 0.5 V) & 50 50 50 MHz Transition frequency (Ie = 10 mA; Veg = 0.5 V) tr 250 250 250 MHz Collector-base capacitance (Vego = 2 V; f = 1 MHz) Cceo 4.4 (<11) | - - pF Collector-base capacitance (Vogo = 10 V; f = 1 MHz) Ccso - 3.5 (<7) | 3.9(<7) | pF Noise figure (Ig = 200 pA; Veg = 0.5 V; f = 1 kHz; . Af = 200 Hz; Rg = 2 kQ) NF 2.5 (<5) | 2.5 (<5) | 2.5 (<5) | dB . Current gain groups The transistors BC 121, BC 122, BC 123 are grouped according to the small signal current gain hy, and are marked by a color line. Operating point: Voge = 0.5 V; Ig = 250 pA; f =1 kHz Color line white yellow green blue ; 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 hr, | 75 to 150 125 to 260 | 240 ta 500 | 450 to 900 1575 145ir .25C D MM 8235605 OOO4100 MESIEG - | | SIEMENS AKTIENGESELLSCHAF 549, a nee Total perm. power dissipation versus temperature Pig =f Temp) lead length L"-parameter W BC 121, 8C 122, BC 123 0 50 00 150 C ]ynp DC current gain fg = f (Ic) Vee = 2 V, Tamp = parameter {common emitter configuration) BC 121 yellow, BC 122 yellow, 8C 123 yellow BC 121, BC 122, BC 127 yellow 10 10! nn 0 Ty 10'mA ~ |; 146 1576 A-03 T-AY-/7 BC122: BC123.: i Thermal resistance i Ruy = f lead length "L") i K WwW 8C 121, BC 122, BC 123 i 1000 : i a, 2 600 : 400 The characteristic epplies | 10 ta infinitely good heat _| dissipation from the soldering joint at the colector tenninal 7 0 Pid tii t 0 2 & 8 0 mm = * Lead length L > Collector currant ip = f (Vge) Tomy = parameter; Vog = 2V (common emitter configuration) mA BC121, BC 122, 8C123 0 5 h | vy 5 Average = Scattering limit ri at 5 q' 0 05 Wy_ = 25C D MM 8235605 OOO4L01 7 MESIEG 72 QQ-/9 SIEMENS AKTIENGESELLSCHAF BC 121 BC 122 . BC 123 : Output characteristics Ic =f (Vce): Output characteristics Ic = f (Vee) j Ig = parameter, Tamb = 26C (common emitter configuration} mA BC121, BC122, 8C123 k f c [* | 30 20 10 0 0 10 20 a0V - >Voe Collector-emitter saturation voltage Vogsat = f Uc) hee = 20; Tap = parameter (common emitter configuration} mA 80121, BC122, BC123 10? Avarage values Scattaring init atTamb=25C 4 0 0 o1 02 08 #04 05 O06V > Vee gat 157? A-04 in 80 60 4g 20 Ig = parameter {common emitter configuration) BC121, BC 122, BC123 0 1 2 8 4 > Vee Base-emitter saturation voltage Vacsat =f (Zc) Deg = 20; Tamb = DAtameter {common emitter configuration} BC 121, BC 122, BC 123 0 05 ov > Vaesat - a 14725C D MM &235L05 0004102 9 MMSIEG 7-29-/7 SIEMENS AKTIENGESELLSCHAF BC 121 BC 122 BC 123 Collector cutoff current versus temperature , _ . 'eao =f (Tune) Fen er rogquency fr=F leh nA BC 121, 80122, BC 123 MHz BC 121, BC 122, BC 123 0 to* Veao* 2V (86121) Vegq=15V(8C122) 0 50 100 50C > Tany Emitter-base capacitance Cegg = f (Veg) Collector-base capacitance Ccgg =f (Vceg) pF BC121, 86122, BC123 at] CoBO CEB 10 0 w 5 10 V5 wily > Vooos Vega 148 ne 1578 A-05 0? fh 3 10 5 10? 0! 1 Q 4 2 ww? 5 10) 5 09 5 107mA f Input characteristic fg = f(Vge) Vee =2V (common emitter configuration) a BC121, BC 122, BC 123 10 5 10 10 0 05 10y > Vee He Agito=e asc D = 8235605 ooo4103 0 mESIEG . 992/97 ra LUD SIEMENS AKTIENGESELLSCHAF - BC 121 BC 122 BC 123 Noiso figura AF =f (f Noise figura NF =f (Vee) (Rg = 2KQ, Vee = SV, Ie = 0.2 mA) (Ig = 0.2 mA, Ry = 2 kO, f = 1kH2) dB BC121, BC 122, BC 123 dB BC 121, 8C122, BC 123 20 20 ->F F a) 0 7? 5 wt 10 5 107 kiz f 0 5 10 5 10 Vee 5 107V Nolee figure NF =f (/c) (Vee = 5 Vif =1 kHz, Temb = 25C) aB BO121, BC122, 86123 20 10 S18 10? 10 10*wA ~is 149 1579 A-06