n i chia st s-da1- 1787c nichia corporation specifications for full color led NSSM227AT pb-f r e e r e f l o w so lder ing a ppli c at io n r o hs co mp lia nt r g b sorted (rgb d i e lit separ a tel y .) http://
n i chia st s-da1- 1787c 1 specifica t ions (1) ab sol u te maxi mum r a ti ngs absolute maximum rating item symbol blue green red unit forward current i f 25 35 50 ma pulse forward current i fp 80 110 150 ma reverse voltage v r 5 v power dissipation p d 88.7 124 127 mw total power dissipation p tot 160 mw operating temperature t opr -30~85 c storage temperature t stg -40~100 c junction temperature t j 100 100 100 c * abs o l u te maxi mum r a t i ngs at t a =25c. * i fp co ndit io n s wi th pu ls e wi dth 1 0 m s an d dut y cycl e 10%. * the absolute max i mum p o wer di ssi p a t i o n per die. * the abso l u t e max i m u m p o wer d i s s ipa t io n in to ta l per p a ck age . ( 2 ) in it ial e l ect r ical/ o pt i cal c h ar acterist ics ty p item symbol condition blu e green red unit fo rw ard v o ltag e v f b i f =20m a g i f =20m a r i f =20m a 3.2 3. 2 2.2 v re v e rse current i r b v r =5v g v r =5v r v r =5v - - - a lum i no us in te nsit y i v b i f =20m a g i f =20m a r i f =20m a 400 2000 850 m c d x 0. 133 0. 189 0. 700 chromaticity c oordinate y - b i f =20m a g i f =20m a r i f =20m a 0. 075 0. 718 0. 299 - * char acteristics at t a =25c . * lum i nous int e nsit y v a lue as pe r cie 127: 2007 s t andar d . * chrom a t i ci t y coordi nate s as pe r cie 1931 chrom a ti cit y chart .
n i chia st s-da1- 1787c 2 ranks blue green red item rank min max rank min max rank min max unit forward voltage - 2.80 3.55 - 2.75 3.55 - 1.80 2.55 v reverse current - - 50 - - 50 - - 50 a bt 445 560 gt 2222 2800 rt 950 1200 bs 352 445 gs 1764 2222 rs 755 950 lum i no us in te nsit y br 280 352 gr 1400 1764 r r 600 755 mcd color r a nks blu e ra n k w 1 rank w2 x 0. 139 0. 129 0. 145 0. 152 x 0.129 0.113 0.134 0.145 y 0. 035 0. 050 0. 072 0. 056 y 0.050 0.080 0.105 0.072 green ra n k g 1 m rank g2m x 0. 166 0. 136 0. 176 0. 201 x 0.201 0.176 0.220 0.237 y 0. 676 0. 739 0. 750 0. 686 y 0.686 0.750 0.745 0.684 re d rank r8 x 0.6742 0.6598 0.6915 0.7080 y 0.2958 0.3106 0.3083 0.2920 * r a nking at t a =25c. * t o ler a nce of mea s ure m e n t s of the f o rward v o ltage is 0 .0 5 v . * t o ler a nce of mea s ure m e n t s of the l u m i n o us in ten s it y is 10%. * t o ler a nce of mea s ure m e n t s of the c h romaticit y coordinate is 0.01. * a shipm en t shal l co ns is t o f led s in a co m b ina t io n o f the above r a nk s. the per c en t a ge o f each r a nk in the sh ip men t s h al l be deter m ined by ni ch ia. lum i no us in te nsit y r a nks by color r a nk ranking by luminous intensity ranking by color coordina tes br bs bt gr gs gt rr rs rt w1 w2 g1m, g2m r 8
n i chia st s-da1- 1787c 3 chroma ticity d i agram 550 56 0 570 51 0 50 0 49 0 460 47 0 480 60 0 59 0 58 0 610 62 0 63 0 54 0 53 0 520 w1 w2 g1 m g2 m r8 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.0 0 .1 0.2 0 .3 0.4 0 .5 0.6 0 .7 0.8 x y
n i chia st s-da1- 1787c 4 outline dimensions sts- da7- 1098a n ssm227x no. ( g un it: mm) t h is p r o d uc t co m p li es wi th ro hs d i re cti v e. u ? ro hs ? m ?? * ( g un it : mm, to le r a n c e : 0 . 2 ) g r een 25 blue 34 red 1 6 ? item ??`| package materials ??| encapsulating resin materials ?O| electrodes materials | weight description \?????` black heat-resistant polymer ?? ( ?? epoxy resin(with diffuser) ~? + y? ag-plated copper alloy 0.034g(typ) the red, bl ue and g r een die are a ttac hed to the ca t ho d e s i de. red blu e g r een ` ?g ? ? * red blue 3.2 (2.2) 3.2 2.4 (0.7) (0.7) green 6 5 4 3 2 1 pin-1 mark 1.4 0. 80. 3 1.80.3 2.1 0.5 0.5 0.5 0.8
n i chia st s-da1- 1787c 5 soldering ? r e co mm end e d r e f l ow sold ering co ndi t io n ( lead -free sol d er) ? r e co mm end e d hand so lde r ing co nd it io n temperature 350c max soldering time 3sec max ? r e co mmend e d sold ering p a d p a ttern ( g unit: mm) 1.4 1.55 4. 5 0.85 1.55 0.85 0.75 3.05 * thi s led is desi gned to be refl ow so l dered on to a pc b . if di p s olde r e d , n i c h i a c a nnot guar ant e e it s r e li abili t y . * r e fl ow so l d eri n g must not be perform ed more than twice. hand sol d ering mu st not b e performed more than o n ce. * a v oid r a pid cooling. r a mp down th e temp er ature gr adua lly from th e pe ak tem p er at ure. * n i t rogen ref l ow soldering is reco mmend e d. ai r fl ow sold ering cond it ion s can caus e op ti cal d e gr adat i o n, caused by h e at and / or atmospher e . * r e pairing should not be d o ne after th e l e ds ha v e been solder ed. wh en repair ing is u n a v oidable, a do uble-h e a d so lder ing ir o n sho u ld be u s ed. it shoul d b e confi r med b e forehand wh et h e r th e char ac te rist i cs of th e l ed s wi ll or w i ll not be da maged by repairing . * when sold ering, do not ap ply str e s s to t h e le d whi l e th e le d is ho t . * thi s product can d i ffer in optical char acteri st ics d e pend ing on the nu mb er of refl ow cy cles. in a si ngle di sp l a y , onl y l e ds with sa me numb e r of refl ow cy cles shoul d be used reg a r d le ss o f th e appli c at io n t y p e, such as re n t al a n d/or per m an ent in sta l l a tion s. 120s e c max pre- hea t 180 t o 200c 260c max 10sec max 60sec max above 220c 1 t o 5c pe r se c
n i chia st s-da1- 1787c 6 t a pe and reel dimensions ? ` / ` tr a ile r an d le ade r ???`?` embossed carrier tape ? ??` to p cov e r t ape f eed di re ct i o n ` 4 00m m le ade r wi t h out to p cover ta p e 400mm min ? ` 160mm ? trail e r 160mm mi n( em p t y p o cke t s) led ? lo aded po ckets 100mm l e ader w i th t o p co ver t a pe 100 m m min( empt y pocke t ) n xxx 227x sts- da7- 1099 quant i t y p e r re e l =4000p cs 1 `? 4000 the t a pe packing me t h o d c o mp lie s w i t h j i s c 0806 (p ac kaging o f electronic co m p o n ents o n co ntinuous t a pes ) . * j i s c 0806 ? ` ? ?`??? tape 1. 7 5 0 . 1 8 0.1 2 0.05 4 0.1 5.5 0.05 -0 1.5 +0 .1 12 +0.3 -0.1 `? re el * 80 1 17.5 1 13.5 1 1 3 0 . 2 330 2 la b e l 2 1 0 . 8 ( g unit: mm) no . 0.25 0.05 2.05 0.1 3.45 0.1 3.45 0.1 -0 1.5 +0.2 pin-1 mark
n i chia st s-da1- 1787c 7 p a ckaging - t a pe & reel nichia led sts-da7-0006b n x xxxxxx ? label la b e l no . reel ` ?` sea l mo isture-proo f bag ? ? for details, see "lot numbering scheme" in this document. * ? ? ???? ? ? if not provide d , it is n o t ind i cat e d on t h e l a b e l . ******* is t h e cus t o m e r p a r t n u mbe r . O ? ? ? ? * ******* ? the l a b e l does no t have the ran k fi el d fo r un - r a nked p r o d uc ts. * ? ? ? ? rohs nxxx xx xx xxxx led ******* nichia corporation 491 oka, kaminaka, anan, tokushima, japan typ e lot qty. ym xx xx -rrr pcs rohs nxx xxx xx xxxx led ** *** ** rr r pcs typ e ra nk qty. nichia corporation 491 oka, kaminaka, anan, tokushima, japan reels are shipped with desiccants in heat-sealed moisture-proof bags. ` ? ` de sic c an t s p r o d uc ts s h i p pe d o n tape a n d reel a r e pa ck ed in a m o i s tu re-proo f bag. t hey a r e shi p ped i n c a rdbo ard bo x e s to pro t e c t them fro m ex te rnal f o rce s during trans p o r ta tio n. ? \ H? y ? B ? ? y * ?` ? ? ? y ? ? * ? Q H n ? u? p ? ? ? ? * * u ? ?` ? n ? g o ?` y ? usin g an orig inal packagi n g mat e rial or eq uivale nt in t r ans i t is r e co m m en de d. d o no t ex po se to wa ter, the bo x is no t water-resi s t ant. do not drop o r sho c k the box. i t may dama g e th e pr o d ucts. m o is tu re -pr o o f ba gs a r e pa ck e d in c a r d bo a r d bo x e s w i th c o r r u ga ted pa rti t i o n s . ? K ? ` ?
n i chia st s-da1- 1787c 8 l o t numbering scheme lot numb er is presented by using t h e foll owing al phanum e r i c c o de . ymxxxx - r r r y - y e a r year y 2009 9 2010 a 2011 b 2012 c 2013 d 2014 e m - m o n t h mont h m month m 1 1 7 7 2 2 8 8 3 3 9 9 4 4 10 a 5 5 11 b 6 6 12 c xxxx - n i c hi a's product n u mber r r r - r a n k * the label does no t ha v e the ra nk field for un -r ank e d products.
n i chia st s-da1- 1787c 9 dera ting characteristics n s s m 22 7a s t s - d a 7-10 95 no . der a t i n g 1 0 50 10 0 15 0 20 0 25 0 02 0 4 0 6 0 8 0 1 0 0 1 2 0 (55, 88.7)blue (40, 124)green (39, 127)red (85, 30.0)green, red (85, 29.9)blue de ra t i n g 2 0 50 10 0 15 0 20 0 25 0 0 2 04 0 6 08 0 1 0 0 1 2 0 (40, 160) (8 5, 40.0) duty 10 100 1000 1 10 100 25 35 50 80 11 0 150 S allowable forward current ( ma ) ? - ?S ?p? ambient temperature vs total power dissipation ? ?- S p? a m b i en t t e m p e r a t u r e v s po w e r d i s s i p a t i o n S p? pow e r d i s s i p a t i o n ( m w ) ?S p? to t a l p o w e r d i ss i p a t i o n ( mw ) ? ? a m b i en t t em p er atu r e( c ) ?? a m b i en t t e m p er a tu r e ( c ) ? ` ` du t y r a ti o ( % ) ` ` - S d u ty r a ti o v s a llo w a ble f o r w a r d c u r r e n t blue green re d t a = 25c bl u e green red * t h e gr a p h s h o w s t h e ma x i mu m a l l o w a bl e po w e r di s s i pa t i o n fo r a l e d di e o f e a c h c o l o r . ? ?H 1 ? ? * 2 ? ?H ? ` ? ? t h e gr a p h s h o w s t h e ma x i mu m a l l o w a bl e t o t a l po w e r di ss i p a t i o n f o r a l e d p a c k a g e . ** **
n i chia st s-da1- 1787c 10 optical characteristics n s s m 22 7a n o . s t s -d a 7 -10 9 6 y- y spectrum 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 40 0 450 5 00 55 0 600 6 50 70 0 r e l a t i v e lu m i n o s i t y ( a .u .) x- x r e l a t i v e l u m i n o s i t y (a . u .) d ir e c t iv it y 2 90 80 70 60 50 40 30 20 10 0 -1 0 - 20 -3 0 -4 0 - 50 -6 0 -7 0 -8 0 -9 0 dir ect i v i t y 1 90 80 70 60 50 40 30 20 10 0 -1 0 -2 0 -3 0 - 40 -5 0 -6 0 -7 0 -8 0 -9 0 y( 9 0 ) y( - 9 0 ) x (- 9 0 ) x (9 0 ) k ? r e lative emission intensity(a.u.) k spe c t r um ? d i r e c t iv it y L wa vel e n g th ( nm ) 10 . 5 0 0 . 5 1 10 . 5 0 0 . 5 1 ? rad i at i o n an g l e ? ra d i a t i o n an g l e t a =2 5 c blue ( gr e e n ( re d ( i fp = i fp = i fp = 20 m a ) 20m a ) 20ma) * ?? a l l c h ar ac t e r i s t i c s s h o w n a r e f o r r e f e r e n c e o n l y a n d a r e n o t g u ar a n t eed . t a =2 5 c t a =2 5c blue( gr e e n ( re d ( i f = i f = i f = 20m a ) 20 m a ) 20 m a ) blue ( gr e e n ( re d ( i fp = i fp = i fp = 20m a ) 20 m a ) 20ma )
n i chia st s-da1- 1787c 11 for w a r d cur r e n t char acteris t ics / tempera t ure characteristics s t s - d a 7-10 97 no . n s s m 22 7a tavf 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 4. 5 5. 0 - 60 - 40 - 2 0 0 2 0 4 0 60 8 0 100 120 taiv 0. 6 0. 8 1. 0 1. 2 1. 4 - 6 0 - 4 0 - 20 0 2 0 4 0 60 8 0 10 0 120 vf i f 1 10 100 1 000 1 . 5 2 . 02 . 53 . 0 3 . 54 . 0 4 . 55 . 0 20 80 11 0 15 0 relative luminosity(a.u.) ??- am b i e n t te m p e r a t u r e v s r e l a ti v e l u m i n o s i ty forward current(ma) ifiv 0 1 2 3 4 5 6 7 0 5 0 1 00 150 2 00 r e l a ti v e l u m i n o s i ty ( a . u . ) - fo r w a r d c u r r e n t v s r e l a ti v e lu m i n o s i ty f o r w a r d c u rre n t ( m a ) R- fo r w a r d v o l t a g e v s fo r w a r d c u r r e n t ? - R a m b i en t t e m p e r a t u r e v s fo r w a r d v o l t a g e ?R fo r w a r d v o l t a g e ( v ) ?R f orward voltage(v) ?? amb i e n t t e m p erature ( c ) ?? am b i e n t t e m p erature ( c ) gree n 20m a 20m a i fp = i fp = bl u e re d 20m a i fp = bl u e gr e e n red bl u e gr e e n red t a =2 5 c * ?? a l l c h ar ac t e r i s t i c s s h o w n a r e f o r r e f e r e n c e o n l y a n d a r e n o t g u ar a n t eed . t a =2 5 c gr e e n 20m a 20m a i fp = i fp = bl u e re d 20m a i fp =
n i chia st s-da1- 1787c 12 reliability (1) t e s t s a n d r e sults te s t reference standard test conditions te s t duration failure criteria # units failed/tested r e si st anc e t o soldering heat (reflow soldering) j e it a ed- 4701 300 30 1 t sl d =260c, 10 s e c, 2re f l o w s , pre c ondit i o n : 3 0 c, 70%r h , 168hr #1 0/22 temperature cycle j e it a ed- 4701 100 10 5 - 40c( 30mi n )~25c( 5mi n )~ 100c( 30m i n )~25c( 5mi n ) 100c y c l e s #1 0/ 50 moisture resistance (cyclic) j e it a ed- 4701 200 20 3 25c~65c~-10c, 90%r h , 24hr per cy cle 10c y c l e s #1 0/50 high t emperature stor age je it a ed- 4701 200 20 1 t a =100c 500hours #1 0/ 50 t emperature humidity stor age je it a ed- 4701 100 10 3 t a =60c, r h = 90% 500hours #1 0/ 50 low t emperature stor age je it a ed- 4701 200 20 2 t a =- 40c 500hours #1 0/ 50 r oom temperature oper ating life t a =25c b i f =9ma g i f =13m a r i f =15m a 500hours #1 0/ 50 t emperature humidity oper ating life 60c, r h =90 % b i f =5ma g i f =7ma r i f =7ma 500hours #1 0/ 50 low t emperature oper ating life t a =- 30c b i f =9ma g i f =13m a r i f =15m a 500hours #1 0/ 50 no tes: measuremen ts ar e perf ormed after allowi ng the l e ds to return to ro o m te mp er at ure. ( 2 ) f a ilu re c r it eria ( v al u e f o r on e le d dev i ce (sin gle colo r ) . ) cr iteria # items conditions failure criteria f o rw ard v o ltag e(v f ) b i f =20m a g i f =20m a r i f =20m a >u .s.l.1.1 lumi no us in te nsit y ( i v ) b i f =20m a g i f =20m a r i f =20m a u .s.l .2 . 0 u . s.l . : up pe r specif ica t io n lim i t l.s.l. : lo wer spe c if ica t io n li mi t
n i chia st s-da1- 1787c 13 ca u t ion s (1) stor age conditions temperature humidity time before opening aluminum bag 30c 90%rh within 1 year from delivery date stor age after opening aluminum bag 30c 70%rh 168hours baking 655c - 24hours product c o m p li es wit h j e d e c msl 3 or e q uiv a le nt . see ipc/j e d e c std - 020 for m o i s t u re- s e n s i t i v i t y det a il s. absorbed moi s ture i n led packages can v apori ze and expand during sol d ering, w h ich can ca use i n terface del a mi na ti on and result in optical p e rforman ce degr ad ation . prod ucts are pack ed in m o is ture - p roof al um inum bags to min i m i ze mo i s tur e abso rptio n d u ri ng t r anspo r ta tio n a n d sto r age . inc l ude d s ilic a ge l de si cc ant s change from bl ue t o re d i f m o is ture had pe net r at e d bags. after opening the moisture-proof alu m inu m bag, the pro d ucts should g o through th e solder ing pro c ess withi n th e r a nge of th e co ndi t ion s s t at ed above. un us e d rema in ing le ds shou ld be s t ored wi th si li c a gel de si cca nt s in a herm et ically sea l e d co nta i ner , preferab l y the ori g i n al mo i s ture-pr oof bags for stor age. after t h e ?p eriod aft e r op eni n g? s t or age ti me h a s be en exceed ed or s i l i ca ge l de si cca nts ar e no lo ng er blu e , the products shou ld be b a k e d. baking shoul d onl y be d o ne once. the lead s or el ect r od e pad s ( anod e and cat h ode) of t h e produc t ar e pl a t ed w i th sil v er . exposure to a corrosi v e en vi r o nment might caus e the si lver pla t ed th e l e ads or ele c trod e pad s t o t a r n ish, and t h us le ading t o di ffic u l t i e s in s ol d e r ing. if unused l e d s rema in , t h ey mu st b e st o r ed in a h e rm e t ically s e aled c o ntainer . nich i a r e co mm end s us ing the or i g i n al moi s ture-proof bag for stor age. do not use s u lfur- c on tainin g ma terials in c o mm erc i al product s . som e m a ter i al s, su ch a s s e al s and adh e sives , may co nta i n su lfur . the extre m ely corroded or conta m inat ed plat ing of le d s mi g h t cause a n open ci rcuit. si li co ne rubb er i s recommend e d as a mater i al for sea l s. bear i n mi nd , the use of si li co ne s may l e ad to si li cone con t a m i n at ion of e l e c tri c a l con t ac ts inside th e p r o d uct s , caus e d by lo w mol e c u lar we igh t vo l a ti le si lox a ne . t o prevent water cond en s a tion , p l eas e avoid large te m p er at ure a n d h u midit y fluctua t ion s for the stor age conditi o ns. (2) di recti o ns for use in desi gni n g a ci rcuit, the current throu g h each l e d d i e mu st no t exc e ed th e abso lu t e maxi mu m r a tin g curre nt specifi e d for each d i e . it i s reco mmended that each led d i e i s driven a t a c o ns t a nt cu rre nt . when ha v i ng the two or more di ce withi n this product o n at t h e sa m e ti me , t h e to tal po wer di ss ipation for t h e led pac k age must be w i t h in th e abso lut e max i m u m v a lue spe c if ied in thi s sp ec ifi c at i o n. leds sho u l d be oper ated i n forw ard bi as. d r i v i n g ci rcuits must no t subj ect led s to either forw ard or rev e rse v o ltag e whil e off . continuo us reverse voltag e can caus e m i gr ation an d le d dam a ge. f o r s t abi l i z ing t h e led c h ar ac t e r i st ic s, it is re c o m m end e d to oper ate a t greater than 1 0 % nom i na l cu rrent . care must b e tak e n to ensure th at t h e re verse vol t age wil l no t exce ed the ab sol u t e maxi mu m r a t i ng when us ing the l e d s wi th matr ix drive . f o r outdoor use, necessary mea s ures sho u l d be tak e n to prevent wa ter , mo i s tur e and sal t air da mag e . (3) handl i n g precau ti ons do not hand le le d s with b a re hand s, it ma y con t a m in ate the l e d surface and affect opt i ca l char a c ter i s t i c s . in the worst case , ca tas t ro phic fa il ure fro m exce ss pr es su re throug h w i re-bond break s and packag e damage ma y r e su lt. when ha ndling t h e produ c t with t w ee z e r s , be ca reful not to appl y ex cess ive forc e to the r e s i n. otherwis e, the re si n can be cu t, ch ipped, delamina te or deform ed , causing w i re-bo n d breaks an d cata stroph ic fa ilures. dropping th e product ma y cause damage. do no t sta c k asse mb led p c bs to g e t h er . f a il ure to co mp l y can cau s e th e res i n po rt io n o f the pro d u c t to be c u t , ch ip ped, delaminated and/or defor m ed . it ma y cause w i re to break, lead i n g to catastrophi c f a i l ures.
n i chia st s-da1- 1787c 14 (4) desi gn consi d er ati o n pcb warpag e after mo un ti ng th e pro d uc t s o n to a pc b c a n cau s e the p a ck age to br ea k . the led s h ould be p l ac ed in a way to m i ni mize t h e s t re ss on the l ed s due to pc b bo w and tw is t. the positio n and orienta t io n of the leds affect how m u ch me cha n i c al stre ss i s exerte d on the leds pl aced near the score li nes. the led s h ould be p l ac ed in a way to m i ni mize t h e s t re ss on the l ed s due to board f l ex ing. board separ a ti on must b e performed us in g spec ia l j i g s , no t u s in g hand s. (5) el ectrostati c di scha r ge (es d ) the produ c t s are se ns it ive to sta t ic e l e c tr i c i t y or surg e voltag e. es d ca n damag e a di e and i t s re l i ab il i t y . when handling t h e produ c ts , th e followin g mea s ure s ag ains t e l e c tro s t a ti c di sch arge are stron g ly re com m e n ded : e l i m i n a t i n g t h e c h a r g e grounded wri s t s t r ap , esd foot w e ar , clot hes, a n d fl oo rs grounded workstat ion equipm en t and tools esd tabl e/s h e l f ma t ma de of condu c t i ve ma ter i al s pr o p er gr o u nding is r e qu ir ed f o r all d e v i c e s, equ i pm en t, and mac h i n er y used in pr o d uct a s s e mb ly . surge prot ecti on should be consi d ered wh en desig n ing of commercia l products. if tools or e q uip m e n t co nt ain i n s u la ti ng mat e ria l s su ch as gla ss or pla s t i c , t h e fol l o wi ng m e as u r es agai n st el ec t r os t a ti c di sch arge are stron g ly re com m e n ded : diss ipat i n g sta t ic c h arg e wi th co nduc t i ve mat e ria l s preventi ng charg e gen e r a tio n w i th m o is ture n e u t r a l i z i n g t h e c h a r g e w i t h i o n i z e r s th e cu st ome r i s advi se d to c h ec k if the leds are da ma ged by esd when performing the char acter i stics i n sp ecti on of t h e led s i n the app l icati o n. d amage ca n be detected wi th a forw ard v o l t ag e mea s urement or a li g h t - up test a t l o w current ( 1m a ) . leds with esd - d a mag e d d i ce (i.e. other than red ) ma y ha v e an increa sed leakage cu rrent, curr ent f l ow at a low v o ltag e, o r no lo nger il lu mi nat e at a lo w cur r e nt . f a ilur e c r iter ia : v f <2.0 v at i f =0.5ma (6) t h ermal manageme nt proper th er mal manag e m e nt is a n i m po r t an t when designing prod ucts with le ds . le d di e t e mp er at ure i s affec t ed by pcb ther mal r e sistan ce and le d spa c ing on th e boar d. pl eas e de sig n produc ts in a way that t he l e d d i e t e mperature does not exceed th e max i mu m j unc t i on t e mper a t ure ( t j ). d r i v e current should be d e ter m i n ed for t h e s u rround ing ambi en t te mp er ature (t a ) to dis s ipa t e the h e at fro m the pr o d uct . (7) cl eani ng if r e quir ed, iso p r o py l a l co h o l (ip a ) s h o u l d be use d . o t he r solven ts may caus e pre m at ure fai l ure to t h e le ds due to the d a mage to th e r e si n port ion . t h e effe ct s of s u ch solve n t s s h ould b e v e ri f i ed pri o r to use. in additio n , the use of c f c s su ch as freo n is heavi l y re gula ted . ultr ason ic cleaning is no t recom m e nde d s i nc e i t may have adverse eff e ct s on t he l e ds depending on the ultr ason ic power a n d h o w led is assembled. if ultr asonic clea ning m u s t be use d , t h e c u sto m er is adv i se d to mak e sure the led s w i ll not b e da ma ged pri o r to cl eani ng . (8) ey e saf e t y in 2006, t h e inte rnat i o nal el ec t r i c al comm is si on (iec ) publi s he d iec 62471: 200 6 phot obi o l ogic a l s a fet y of l a m p s and lamp sy ste m s, wh ic h a dded le ds in it s scop e . on t h e ot her hand, t h e iec 60825- 1: 20 07 l a s e r s a f e t y s t andard r e mo v e d leds from it s sc ope. however , pl ease b e advi se d that som e co untr i es and regions ha v e ado p ted stand a rds bas e d on t h e iec l a s e r safe t y s t andard iec 60825- 1: 20 112001, whi c h s t ill i n cl udes leds i n i t s sc op e . most of n i chi a 's l e ds ca n be cl a s si fied as bel o ng ing in to either the ex empt group or risk group 1. hi gh- p owe r leds , t h at emit li gh t con t aining blu e w a vele ngth s, ma y be cla s s i fi ed as ri sk group 2 . please pro c eed wi th cau t io n whe n view in g direc t ly an y leds dri v en at hi gh current, o r vi ewing led s with opt i ca l ins t ru me nt s w h ic h may gr eat l y in crea se t h e damage s to your eyes . view ing a f l ashi ng l i gh t m a y caus e eye d i s c omfort . when in corpor ating the l e d i n to y o ur product, pl ease be careful to a v oi d adv e rse eff e cts on the hu man body caused by ligh t stimu l a t ion.
n i chia st s-da1- 1787c 15 (9) ot hers the le d s d e scr ibed in th is brochure ar e i n te nded to be used for ordina ry el ectroni c equi p m en t (such as offi ce eq uipment, commun i cat i ons equ i pm en t, mea s ure m e n t in str um e n t s and hou s eho l d applia nc es ). co nsult n i c h ia' s sal e s staf f in adv a n c e f o r inf o r m a t io n o n th e appl ica t i o ns i n wh ich e x ceptio na l qua l it y and r eliab i l i t y ar e r eq u ir ed , par t icu l ar ly when the f a il ure o r malf u n c t io n o f the le ds m a y direc t ly j eo p ardize lif e o r heal th (such as for ai rplanes, a e rospa c e, sub m ersi b l e repeaters, nucl e ar reactor co nt r o l sy s t e m , a u t o mobi le s, tr affi c contr o l equi p m ent, li fe su pport s y stem s an d s a fet y de vi ce s). the c u s t om er sha ll not reverse eng i ne er by disas s e m bl i n g or analys is of the le d s wit h out ha v i ng pr ior writt e n co ns ent from nich i a . w h en def e c t ive le ds are fou n d, t h e c u s t om er sh a ll inf o r m ni ch ia dir ec t ly bef o r e di sas s e m bl ing o r ana l y s is . both th e cu sto m ers a n d n i c hia w i ll agr ee on offici al s p ec ifi c at io ns of su pplied produc ts before a customer 's vo lume producti on . specificatio ns and app e ar ance subject to chang e for impro v ement w i tho u t noti ce.
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