cosmo electronics corp. document no. 6 9p04003 .2 - 1 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? description the kpc357nt0w is dc - input single channel which contains a light emitting diode optically coupled to a phototransistor. it is packaged in a 4 - pin mini - flat package. the input - output i solation voltage is rated at 3750 vrms. ? schematic 1. ano de 2. cathode 3. emitter 4. collector ? features 1. halogen f ree 2 . pb free and roh s compliant 3 . low input c urrent type ( i f = 0.5 ma ) 4 . current transfer ratio (ctr : 100~600% at i f = 0.5 ma vce= 5 v) 5. high collector - emitter voltage (vceo:80v) 6 . high isolatio n voltage between input and output (viso: 3750 vrms) 7. mini - flat package: compact 4 pin sop with a 2.0mm profile 8. msl class 1 9 . agency approvals : ? ul approved (no. e 169586 ): ul1577 ? c - ul approved (no. e 169586 ) ? vde approved (no. 40014684): din en 60747 - 5 - 5 ? fimko approved : en60065 , en60950 ? cqc approved: gb8898 - 2011, gb4943.1 - 2011 ? application s ? compute r term inals, programmable controllers ? facsimile equipment, a udio, v ideo ? communications, telephone, etc. 2 1 3 4
cosmo electronics corp. document no. 6 9p04003 .2 - 2 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? outside dimension unit : mm tolerance : 0.2 mm ? device marking notes: cosmo 357nt yww y: year c ode / ww: week c ode w : ctr r ank 2.54 4.40 0.40 0.50 7.00 0.5 0.4 0.10 0.10 3.90 0.5 2.0 0.5
cosmo electronics corp. document no. 6 9p04003 .2 - 3 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? absolute maximum ratin gs (ta=25 ) parameter symbol rating unit input forward current i f 50 ma peak forward current i fm 200 m a reverse voltage v r 6 v power dissipation p d 15 mw output collector - e mitter voltage v ceo 80 v emitter - c ollector vo ltage v eco 7 v collector current i c 50 ma collector power dissipation p c 150 mw total power dissipation ptot 170 mw isolation voltage 1 minute viso 3750 vrms operating temperature topr - 55 to +115 storage temperature tstg - 55 to +125 soldering temperature 10 second s tsol 260 ? electro - optical characteristics (ta=25 ) parameter symbol conditions min . typ . m ax . unit input forward voltage v f i f =10ma - 1.2 1.8 v reverse current i r v r =4v - - 10 a terminal capacitanc e c t v=0, f=1khz - 30 250 pf output collector dark current i ceo v ce =50v - - 0.1 a transfer charac - teristics current transfer ratio ctr i f =0.5ma, v ce =5v 100 - 600 % collector - e mitter saturation voltage v ce (sat) i f =10ma, i c =1ma - 0.1 0.2 v isolation resistance r iso dc500v,40% to 60%rh 5x10 10 10 11 - floating capacitance c f v=0, f=1mhz - 0.6 1.0 pf response time (rise) tr v ce =2v, i c =2ma, r l =100 - 4 18 s response time (fall) tf - 3 18 s
cosmo electronics corp. document no. 6 9p04003 .2 - 4 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler classification table of current transfer ratio is shown below. ctr rank. ctr ( % ) kpc357nt0w a 10 0 to 60 0 kpc357nt0w b 200 to 50 0 kpc357nt0w c 16 0 to 400 kpc357nt0w d 12 0 to 3 00 fig.1 current transfer ratio vs. forward current current transfer ratio ctr ( % ) 0.5 1 2 10 0 100 200 300 400 500 600 700 800 0.1 5 20 ta=25 v =5v ce forward current i f (ma) fig.2 collector power dissipation vs. ambient temperature fig.3 collector dark current vs. ambient temperature collector power dissipation p c ( mw ) 50 100 0 -55 0 150 200 25 55 75 100 125 collector dark current i ceo ( a ) -8 10 -55 0 25 10 -11 10 -10 -9 10 v =50v 10 -7 10 -6 10 -5 75 50 115 ce ambient temperature ta ( ) ambient temperature ta ( ) fig.4 forward current vs. ambient temperature fig.5 forward current vs. forward voltage forward current i f ( ma ) 60 10 -55 0 20 0 25 30 40 50 50 75 115 125 fo rward current i f ( ma ) 100 1.0 -25 0 0.5 1 50 ta=75 c 10 c 1.5 c c 25 c 0 0.1 ta=75 c ambient temperature ta ( ) forward voltage v f (v)
cosmo electronics corp. document no. 6 9p04003 .2 - 5 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler fig.6 collector current vs. collector - emitter voltage fig.7 relative current transfer ratio vs. ambient temperature collector current i c (ma) 0 0 1 1 2 2 3 4 6 5 7 0.5ma 9 8 5ma i =10ma 4 3 5 6 ta=25 1ma c 0.1ma f relative current transfer ratio ( % ) - 5 5 0 0 5 0 2 5 5 0 1 1 5 7 5 i = 0 . 5 m a v = 5 v 1 5 0 1 0 0 f c e collector - emitter voltage v ce (v) ambient temperature ta ( ) fig.8 collector - emitter saturation voltage vs. ambient temperature fig.9 col lector - emitter saturation voltage vs. forward current collector - emitter saturation voltage v ce ( v ) 0 -5 5 0 5 0 2 5 7 5 1 1 5 ic= 1 m a 0 .0 2 0 .0 4 0 .0 6 0 .1 0 0 .0 8 0 .1 2 0 .1 6 0 .1 4 i = 10 m a f collector - emitter saturation voltage v ce ( v ) ambient temperature ta ( ) forward current i f (ma) fig.10 response time (rise) vs. load resistance fig.11 response time (fall) vs. load resistance response rise time ( us ) 1 0 1 0 .1 tr 0 .5 0 .2 0 .1 1 2 5 1 0 2 0 1 0 0 5 0 ic = 2 m a v = 2 v t a = 2 5 c c e response fall time ( us ) 1 0 0 .1 1 0 .1 0 .2 1 0 .5 5 2 2 0 1 0 t a = 2 5 i c = 2 m a v = 2 v 1 0 0 5 0 c tf c e load resistance r l (k ) lo ad resistance r l (k ) 0 4 0 8 1 2 3 5 4 6 7 c ta=25 ic=7m a ic=5ma ic=3m a ic=1m a ic=0.5ma 2 6 10
cosmo electronics corp. document no. 6 9p04003 .2 - 6 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? test circuit f or response time vce tr tf 90% 10% 2 1 3 4 r vcc vce i f i f l
cosmo electronics corp. document no. 6 9p04003 .2 - 7 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? recommended soldering conditions (a) infrared reflow soldering ? peak reflow soldering ? time of peak reflow temperature ? time of temperature high er than 230 ? time to preheat t emperature from 180~190 ? time(s) of reflow ? flux 2 60 or below (package surface temperature) 10 sec 30 - 60 sec 60 - 120 sec two rosin flux containing small amount of chlorine (the f lux with a maximum chlorine content of 0.2 wt% is recommended.) recommended temperature profile of infrared reflow 1 8 0 1 9 0 2 3 0 2 6 0 6 0 -1 2 0 s e c 3 0 -6 0 s e c t (s ) temperature 1 0 s e c m a x . (b) wave soldering ? temperature ? time ? preheating conditions ? t ime ( s ) of reflow ? flux 260 or below (molten solder temperature) 10 seconds or less 120 or below (package surface temperature) one rosin flux containing small amount of chlorine (the flux with a maximum chlorine content of 0.2 wt% is recommended.) (c) cautions ? fluxes avoid removing the residual flux with f reon - based and chlorine - based cle aning solvent . ? avoid shorting between portion of frame and leads.
cosmo electronics corp. document no. 6 9p04003 .2 - 8 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? numbering system k p c357 nt 0 w y (z) note s: k p c357 nt 0 w = part no. y = ctr r ank option ( a ~ d ) z = tape and r eel option (tld tru) option description packing quantity tld tld ta pe & reel option 3 000 u n its per reel tru tru tape & reel option 3 000 u n its per reel ? recommended p ad l ayout for s urface m ount l ead f orm u nit : mm
cosmo electronics corp. document no. 6 9p04003 .2 - 9 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? 4 - pin mini - flat c arrier t ape & r eel tolerance 0.2mm
cosmo electronics corp. document no. 6 9p04003 .2 - 10 - http://www.cosmo - ic.com cosmo kpc357nt0w series 4pin mini - flat low input current photocoupler ? applic ation n otice the content of datasheet is the guidance for product use only. cosmo takes no responsibility to the accuracy of the information provided here. for continuously improving all of products, including quality, reliability, function...etc., c osmo reserves the right to change the specification, characteristics, data, materials, and structure of products without notice. please contact with cosmo to obtain the latest specification. it would be required to comply with the absolute maximum rating s listed in the specification. cosmo has no liability and responsibility to the damage caused by improper use of the products. cosmo products are intended to be designed for use in general electronics application list below: a. personal c omputer b. oa ma chine c. audio / video d. instrumentation e. electrical a pplication f. measurement equipment g. consumer electronics h. telecommunication cosmo devices shall not be used or related with equipment requiring higher level of quality / reliability, or malfun ction, or failure which may cause loss of human life, bodily injury, includes, without limitation: a. medical and other life supporting equipments b. space application c. telecommunication equipment (trunk lines) d. nuclear power control e. equipment used for automotive vehicles, trains, ships...etc. this publication is the property of cosmo. no part of this publication may be reproduced or copied in any form or any means electronically or mechanically for any purpose, in whole or in part without any writ ten permission expressed f r o m cosmo.
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