npn silicon planar epitaxial transistors bc237,238, a,b,c bc239, b,c to-92 plastic package amplifier transistors absolute maximum ratings (t a =25oc) description symbol bc237 bc238 collector emitter voltage v ceo 45 25 collector emitter voltage v ces 50 30 emitter base voltage v ebo 6.0 5.0 collector current continuous i c power dissipation at t a =25oc p d derate above 25oc power dissipation at t c =25oc p d derate above 25oc operating and storage junction temperature range t j , t stg thermal resistance junction to ambient in free air r th (j-a) junction to case r th (j-c) electrical characteristics (t a =25oc unless specified otherwise) description symbol test condition min collector emitter voltage v ceo i c =2ma, i b =0 bc237 45 bc238/bc239 25 emitter base voltage v ebo i e =10 m a, i c =0 bc237 6.0 bc238/bc239 5.0 collector cut off current i ces bc238/bc239 v ce =30v, v be =0 bc237 v ce =50v, v be =0 bc238/bc239 v ce =30v, v be =0, ta=125oc bc237 v ce =50v, v be =0, ta=125oc bc237_239rev_1 201205e 15 na 4.0 m a 4.0 m a 5.0 - 55 to +150 w mw/oc oc v 100 350 1.0 2.8 max 357 oc/w v 125 for lead free parts, device part # will be prefixed with "t" units v v bc239 25 30 v ma mw mw/oc 8.0 15 v na units v oc/w c b e continental device india limited data sheet page 1 of 5 continental device india limited an iso/ts 16949, iso 9001 and iso 14001 certified company
npn silicon planar epitaxial transistors bc237,238, a,b,c bc239, b,c to-92 plastic package electrical characteristics (t a =25oc unless specified otherwise) description symbol test condition min dc current gain h fe i c =10 m a, v ce =5v a b c i c =2ma, v ce =5v bc237/238/239 120 a 120 b 200 c 380 *i c =100ma, v ce =5v a b c collector emitter saturation voltage v ce (sat) i c =10ma, i b =0.5ma *i c =100ma, i b =5ma bc237/239 bc238 base emitter saturation voltage v be (sat) i c =10ma, i b =0.5ma *i c =100ma, i b =5ma base emitter on voltage v be (on) i c =2ma, v ce =5v 0.55 small signal characteristics description symbol test condition min transistors frequency f t i c =0.5ma, v ce =3v, f=100mhz bc237 bc238 bc239 i c =10ma, v ce =5v, f=100mhz 150 collector output capacitance c ob v cb =10v, i e =0, f=1mhz emitter input capacitance c ib v eb =0.5v, f=1mhz noise figure nf v ce =5v, i c =0.2ma, r s =2k w , f=1khz, b=200hz bc237/238 bc239 *pulse test: pulse width < 300 m m s, duty cycle < 2% bc237_239rev_1 201205e typ300 typ270 800 220 460 800 for lead free parts, device part # will be prefixed with "t" v v 0.83 typ120 0.20 1.05 units 0.60 typ180 mhz mhz mhz typ120 typ100 typ140 max units 4.0 10 db db 0.80 v v typ150 v v max typ90 0.70 pf mhz 4.5 pf typ8 c b e continental device india limited data sheet page 2 of 5
bc237,238, a,b,c bc239, b,c to-92 plastic package the to-92 package , tape and ammo pack drawings are correct as on the date of issue/revision of this data sheet. the currently valild dimensions and information, may please be confirmed from the to-92 drawing in the packages and packing section of the product catalogue. bc237_239rev_1 201205e for lead free parts, device part # will be prefixed with "t" to-92 plastic package 1 2 3 d g e sec aa d b a l s o l d e r a b i l i t y e n s u r e d d i m e n s i o n w i t h ' l ' u n c o n t r o l l e d b e y o n d ' l ' k a a 1 2 3 f f h c 3 2 1 m mold parting line all dimensions are in mm dim a b c d e f 5 deg g h k l max. 5.33 5.20 4.19 0.55 0.50 1.40 1.40 2.082 ? 1.20 m min. 4.32 4.45 3.18 0.41 0.35 1.14 1.20 12.70 1.982 1.03 pin configuration 1. emitter 2. base 3. collector to-92 bulk to-92 t&a 1k/polybag 2k/ammo box 200 gm/1k pcs 645 gm/2k pcs 3" x 7.5" x 7.5" 12.5" x 8" x 1.8" 5k 2k 17" x 15" x 13.5" 17" x 15" x 13.5" 80k 32k 23 kgs 12.5 kgs package net weight/qty details standard pack inner carton box qty outer carton box qty gr wt size size packing details continental device india limited data sheet page 3 of 5
bc237,238, a,b,c bc239, b,c to-92 plastic package component disposal instructions ? 1. cdil semiconductor devices are rohs compliant, customers?are requested to please dispose as per prevailing environmental legislation of their country. 2. in europe, please dispose as per eu directive 2002/96/ec on?waste electrical and? electronic equipment (weee). bc237_239rev_1 201205e for lead free parts, device part # will be prefixed with "t" continental device india limited data sheet page 4 of 5
customer notes bc237,238, a,b,c bc239, b,c to-92 plastic package bc237_239rev_1 201205e disclaimer for lead free parts, device part # will be prefixed with "t" the product information and the selection guides facilitate selection of the cdil's semiconductor device(s) best suited for application in your product(s) as per your requirement. it is recommended that you completely review our data sheet(s) so as to confirm that the device(s) meet functionality parameters for your application. the information furnished in the data sheet and on the cdil web site/cd are believed to be accurate and reliable. cdil however, does not assume responsibility for inaccuracies or incomplete information. furthermore, cdil does not assume liability whatsoever, arising out of the application or use of any cdil product; neither does it convey any license under its patent rights nor rights of others. these products are not designed for use in life saving/support appliances or systems. cdil customers selling these products (either as individual semiconductor devices or incorporated in their end products), in any life saving/support appliances or systems or applications do so at their own risk and cdil will not be responsible for any damages resulting from such sale(s). cdil strives for continuous improvement and reserves the right to change the specifications of its products without prior notice. cdil is a registered trademark of continental device india limited c-120 naraina industrial area, new delhi 110 028, india. telephone + 91-11-2579 6150, 5141 1112 fax + 91-11-2579 5290, 5141 1119 email@cdil.com www.cdilsemi.com continental device india limited data sheet page 5 of 5
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