lightkey spec no: ds10121810 rev : a.4 checke d: emil y zh ou appr oved: m.h. lin p a ge: 1/3 http://www .displa y -leds.com tel: 0086- 574 - 8632 228 2 da te: jul/20/201 1 dat a shee t of 1.20 inch 5x7 square d o t matrix led displa y lm12257 a/b series ? 1.20 inch 5x7 s quare dot matrix led displa y at t e n t i o n ob ser ve pr ec a u t i o n s fo r h a ndl i n g e l e c tro s t a ti c di s c h a rg e sen s i t i v e d evi c e s f e a t u r e s ? 28.60 mm (1.2 inch) m a t r i x h e i g h t ? d o t s i z e : 4 x 4 m m ? pitch: 4.1mm ? w i d e v i e w i n g a n g l e ? r a n g e o f e m i t t e d c o l o r s ? i . c . c o m p a t i b l e ? l o w p o w e r c o n s u m p t i o n ? w h i t e d o t , g r e y o r b l a c k f a c e available options ? alternativ e emi tting lumi nosit y: standar d or hi gh bri ghtn e ss versio n ? alternativ e emi tted color ? alternativ e dot and face c o lor ? alternativ e font ? both ca an d c c versio ns are avail a b l e ? crop ped termi nal p i ns ? rohs com p li a n t package di mensions 2. 5 4 6 = 1 5 . 2 4 ?0 . 5 1 0 5 . 0 2 3 . 0 1 1 1 2 3 4 5 6 7 2 34 5 co l . ro w 4. 1 4 = 16. 4 6 . 4 2 = 6 1 . 4 2 0 .3 ( 0 .81 ) ) 4 1 . 1 . 1 ( 6 . 8 2 3. 0 ( 0. 1 2 ) ) 2 1 . 0 ( 0 . 3 notes: 1. all dim ens ion s are in millimet ers (inches), t o lerance is + 0.25mm (0.01inch) u n less other w i se noted. 2. specific ation s are subj ect to change w i thout notice. 3. t he ga p between the reflector and pcb s hall not ex ceed 0.2 5 mm.
lightkey spec no: ds10121810 rev : a.4 checke d: emil y zh ou appr oved: m.h. lin p a ge: 2/3 http://www .displa y -leds.com tel: 0086- 574 - 8632 228 2 da te: jul/20/201 1 dat a shee t of 1.20 inch 5x7 square d o t matrix led displa y internal circuit diagram lm122 57 b (common an ode ro w ) lm12257a (comm on ca thode ro w ) 13 3 4, 1 1 10 6 12 34 5 9 14 8 5, 1 2 1 7 2 1 2 3 4 5 6 7 pi n no . pi n no . co l . co d e n 13 3 4, 1 1 10 6 1 234 5 9 14 8 5, 1 2 1 7 2 1 2 3 4 5 6 7 pi n no . pi n no . co l . co d e m selection guide part no. chip i v @if= 20ma one do t common cathode ro w common anod e ro w m a t e r i a l c o l o r wl d m i n . t y p. lm1225 7ar lm1225 7br gaalas super red 640 8 1 0 lm1225 7ad lm1225 7bd gaalas h i - r e d 6 4 0 1 8 2 5 lm1225 7ao lm1225 7bo gaasp oran ge 625 7 9 lm1225 7ay lm1225 7by gaasp yellow 588 8 1 0 lm1225 7ag lm1225 7bg gap gree n 568 7 9 lm1225 7aur lm1225 7bur a l g a i n p ultra r e d 640 30 4 5 lm1225 7auo lm1225 7buo a l g a i n p ultra o r an ge 625 45 6 0 lm1225 7aua lm1225 7bua a l g a i n p ultra ambe r 605 30 4 5 lm1225 7auy lm1225 7buy a l g a i n p ultra yello w 595 30 4 5 lm1225 7aug lm1225 7bug a l g a i n p ultra g r ee n 573 30 4 5 lm1225 7apg lm1225 7bpg ingan pure g r een 525 1 2 0 300 lm1225 7aub lm1225 7bub ingan ultra b l u e 470 30 4 5 lm1225 7auw lm1225 7buw smd ultra white \ 1 0 0 120 u n i t : \ \ \ n m mc d mc d
lightkey spec no: ds10121810 rev: a.4 checked: emil y zhou approved: m.h. lin page: 3/3 http://www.display-leds.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 1.20 inch 5x7 square dot matrix led display electrical characteristics & absolute maximum ratings electrical characteristics [1] absolute maximum ratings [1] v f @ i f =20ma [2] color typ. max. reverse current vr=5v power dissipation dc forward current peak forward current [3] super red per dot 1.8 2.2 30 60 25 100 hi-red per dot 1.8 2.2 30 60 25 100 orange per dot 2.1 2.5 30 80 30 100 yellow per dot 2.1 2.5 30 80 30 100 green per dot 2.2 2.5 30 80 30 100 ultra red per dot 1.9 2.6 30 60 30 100 ultra orange per dot 2.0 2.6 30 65 30 100 ultra amber per dot 2.0 2.6 30 65 30 100 ultra yellow per dot 2.0 2.6 30 65 30 100 ultra green per dot 2.1 2.6 30 75 30 100 pure green per dot 3.5 4.0 30 110 30 100 ultra blue per dot 3.5 4.0 30 120 30 100 ultra white per dot 3.5 4.0 30 120 30 100 unit: \ v v ua mw ma ma notes: 1. at ta = 25 c. 2. forward voltage at forward current = 20ma. 3. peak forward current at 1/10 duty cycle, 0.1ms pulse.
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