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ct micro rev 1 proprietary & confidential page 1 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler package outline schematic note: different lead forming options available. see package dimension. features ? ?? ? high isolation 5000 vrms ? ?? ? ctr flexibility available see order information ? ?? ? dc input with transistor output ? ?? ? external creepage 7.5mm (s/sl type) ? ?? ? external creepage 8.0mm (slm type) ? ?? ? operating temperature range - 55 c to 100 c ? ?? ? regulatory approvals ul - ul1577 (e364000) vde - en60747-5-5(vde0884-5) cqc ? gb4943.1, gb8898 iec60065, iec60950 description the ct851 series consists of a high power transisto r optically coupled to a gallium arsenide infrared-emitting diode in a 4-lead dip package different lead forming options. applications ? ?? ? switch mode power supplies ? ?? ? computer peripheral interface ? ?? ? microprocessor system interface
ct micro rev 1 proprietary & confidential page 2 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler absolute maximum rating at 25 o c symbol parameters ratings units notes v iso isolation voltage 5000 v rms p tot total power dissipation 260 mw t opr operating temperature -55 ~ +100 o c t stg storage temperature -55 ~ +150 o c t sol soldering temperature 260 o c emitter i f forward current 80 ma i f(trans) peak transient current ( 1 s p.w,300pps) 1 a v r reverse voltage 6 v p d emitter power dissipation 150 mw detector p d detector power dissipation 300 mw b vceo collector-emitter breakdown voltage 350 v b veco emitter-collector breakdown voltage 7 v i c collector current 100 ma
ct micro rev 1 proprietary & confidential page 3 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler electrical characteristics t a = 25c (unless otherwise specified) emitter characteristics symbol parameters test conditions min typ max units notes v f forward voltage i f =10ma - 1.2 1.4 v i r reverse current v r = 6v - - 5 a c in input capacitance f= 1mhz - 30 - pf detector characteristics symbol parameters test conditions min typ max units notes b vceo collector-emitter breakdown i c = 0.1ma 350 - - v b veco emitter-collector breakdown i e = 0.1ma 7 - - v i ceo collector-emitter dark current v ce = 200v, i f =0ma - - 100 na transfer characteristics symbol parameters test conditions min typ max units notes ctr current transfer ratio i f = 5ma, v ce = 5v 50 - 600 % v ce(sat) collector-emitter saturation voltage i f = 20ma, i c = 1ma - - 0.4 v r io isolation resistance v io = 500v dc 5x10 10 - - c io isolation capacitance f= 1mhz - 0.5 1 pf switching characteristics symbol parameters test conditions min typ max units notes t r rise time i c = 2ma, v ce = 2v, r l = 100 - 6 - s t f fall time - 8 -
ct micro rev 1 proprietary & confidential page 4 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler typical characteristic curves
ct micro rev 1 proprietary & confidential page 5 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler
ct micro rev 1 proprietary & confidential page 6 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler test circuit i c r l r in input output i f input pulse output pulse t r t on t f t off figure 12: switching time test circuits
ct micro rev 1 proprietary & confidential page 7 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler package dimension dimensions in mm unless otherwise stated standard dip ? through hole gullwing (400mil) lead forming ? through hole (m ty pe)
ct micro rev 1 proprietary & confidential page 8 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler surface mount lead forming (s type) surface mount (low profile) lead forming (sl type)
ct micro rev 1 proprietary & confidential page 9 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler surface mount (gullwing) lead forming (slm type)
ct micro rev 1 proprietary & confidential page 10 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler recommended solder mask dimensions in mm unless otherwise stated surface mount lead forming & surface mount (low pro file) lead forming surface mount (gullwing) lead forming marking information note: ct : denotes ?ct micro? 851 : part number v : vde option r : ctr rank y : fiscal year ww : work week k : manufacturing code ct 851 vywwk
ct micro rev 1 proprietary & confidential page 11 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler ordering information ct851(v)(y)(z) v = vde option ( v or none) y = lead form option (s, sl, m, slm or none) z = tape and reel option (t1, t2, t3, t4 or none) option description quantity none standard 4 pin dip 100 units/tube m gullwing (400mil) lead forming 100 units/tube s(t1) surface mount lead forming ? with option 1 taping 1 500 units/reel s(t2) surface mount lead forming ? with option 2 taping 1 500 units/reel s(t3) surface mount lead forming ? with option 3 taping 1 000 units/reel s(t4) surface mount lead forming ? with option 4 taping 1 000 units/reel sl(t1) surface mount (low profile) lead forming? with opti on 1 taping 1500 units/reel sl(t2) surface mount (low profile) lead forming ? with opt ion 2 taping 1500 units/reel sl(t3) surface mount (low profile) lead forming? with opti on 3 taping 1000 units/reel sl(t4) surface mount (low profile) lead forming ? with opt ion 4 taping 1000 units/reel slm(t1) surface mount (gullwing) lead forming? with option 1 taping 1500 units/reel slm(t2) surface mount (gullwing) lead forming ? with option 2 taping 1500 units/reel
ct micro rev 1 proprietary & confidential page 12 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler carrier tape specifications dimensions in mm unless otherwise stated option s(t1) & sl(t1) option s(t2) & sl(t2)
ct micro rev 1 proprietary & confidential page 13 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler option s(t3) & sl(t3) option s(t4) & sl(t4)
ct micro rev 1 proprietary & confidential page 14 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler option slm(t1) option slm(t2)
ct micro rev 1 proprietary & confidential page 15 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler reflow profile profile feature pb-free assembly profile temperature min. (tsmin) 150c temperature max. (tsmax) 200c time (ts) from (tsmin to tsmax) 60-120 seconds ramp-up rate (t l to t p ) 3c/second max. liquidous temperature (t l ) 217c time (t l ) maintained above (t l ) 60 ? 150 seconds peak body package temperature 260c +0c / -5c time (t p ) within 5c of 260c 30 seconds ramp-down rate (t p to t l ) 6c/second max time 25c to peak temperature 8 minutes max.
ct micro rev 1 proprietary & confidential page 16 jun, 2015 ct851 series dc input 4-pin phototransistor optocoupler disclaimer ct micro reserves the right to make changes without further notice to any products herein to improve reliability, function or design. ct micro does not assume any liability arising out of the application or use of any produc t or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. ___________________________________________________ ___________________________________ discoloration might occur on the package surface af ter soldering, reflow or long term use. this does not impact the product performa nce nor the product reliability. ct micro are not authorized for use as critical com ponents in life support devices or systems without express written approval of ct micr o international corporation. 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain li fe, or (c) whose failure to perform when properly used in accordance with instruction for use provided in the labelling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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