lightkey spec no: ds10121846 rev : a.4 checke d: emil y zh ou appr oved: m.h. lin p a ge: 1/3 http://www .l tkey .c om tel: 0086-574 -863 222 82 da te: jul/20/201 1 dat a shee t of 4.00 inch 5x7 dot matri x led displa y lm40057 a/b series ? 4.00 inch 5x7 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 ? 106.50m m (4 .00 inch ) digit high ? d o t s i z e : d i a m e t e r 1 0 . 0 0 m m ? pitch: 15.24 mm ? 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 color ? alternativ e face ? both cc an d c a versions ar e avail a b l e ? crop ped termi nal p i ns ? rohs com p li a n t package di mensions 76.20 1 3 . 0 0 5.08 *6=30.4 8 15 .24* 4=6 0 .96 76 . 0 0 pi n 1 1 co l . 1 0 6 . 5 0 1 5 . 2 4 * 6 = 9 1 . 4 4 5 4 3 2 7 6 5 3 4 ro w 2 1 1 0 . 0 0 0. 80 5 . 3 0 0 . 5 0 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: ds10121846 rev : a.4 checke d: emil y zh ou appr oved: m.h. lin p a ge: 2/3 http://www .l tkey .c om tel: 0086-574 -863 222 82 da te: jul/20/201 1 dat a shee t of 4.00 inch 5x7 dot matri x led displa y internal circuit diagram lm400 57 a (common ca thode ro w ) lm40057 b (common anod e ro w ) 38 7 2 6 5 4 7 1 12 5 2 row 1 14 pi n no. no . 9 pi n 13 co l. 1 3 11 4 10 2 3 4 7 2 12 5 67 1 4 5 6 5 no. pi n 14 2 38 row 1 9 no . pin 13 col. 1 34 1 1 1 0 3 24 6 5 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. ld40 057a r ld40 057b r gaalas super red 640 12 15 ld40 057a d ld40 057b d gaalas hi-red 640 27 3 7 . 5 ld40 057ao ld40 057bo gaasp oran ge 625 10.5 1 3 . 5 ld40 057ay ld40 057by gaasp yellow 588 12 15 ld40 057ag ld40 057bg gap gree n 568 10.5 1 3 . 5 ld40 057a ur ld40 057b ur algainp ultra r e d 640 45 6 7 . 5 ld40 057a uo ld40 057b uo algainp ultra o r an ge 625 67.5 90 ld40 057a ua ld40 057b ua algainp ultra ambe r 605 45 6 7 . 5 ld40 057a uy ld40 057b uy algainp ultra yello w 595 45 6 7 . 5 ld40 057a ug ld40 057b ug algainp ultra g r ee n 573 45 6 7 . 5 ld40 057ap g ld40 057bp g ingan pure g r een 525 180 450 ld40 057a ub ld40 057b ub ingan ultra blue 470 45 6 7 . 5 ld40 057a uw ld40 057b uw smd ultra white \ 150 180 u n i t : \ \ \ n m mc d mc d
lightkey spec no: ds10121846 rev: a.4 checked: emil y zhou approved: m.h. lin page: 3/3 http://www.ltkey.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 4.00 inch 5x7 dot matrix led display electrical characteristics & absolute maximum ratings parameter electrical optical characteristics [1] absolute maximum ratings [1] v f @ if=20ma [2] emitted color typ. max. reverse current vr=5v power dissipation dc forward current peak forward current [3] super red per dot 3.6 4.4 50 120 25 100 hi-red per dot 3.6 4.4 50 120 25 100 orange per dot 4.2 5 50 160 30 100 yellow per dot 4.2 5 50 160 30 100 green per dot 4.4 5 50 160 30 100 ultra red per dot 3.8 5.2 50 120 30 100 ultra orange per dot 4 5.2 50 130 30 100 ultra amber per dot 4 5.2 50 130 30 100 ultra yellow per dot 4 5.2 50 130 30 100 ultra green per dot 4.2 5.2 50 150 30 100 pure green per dot 7 8 50 220 30 100 ultra blue per dot 7 8 50 240 30 100 ultra white per dot 7 8 50 240 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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