lightkey spec no: ds10121595 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: 0 086- 574- 863 2228 2 d a te: jul/20/201 1 dat a shee t of 0.28 inch four digit 7 segment led displa y ld2841a/b series - 0.28 inch four digit 7 seg m ent led display 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 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 seg m ent color ? alternativ e font ? common c a th ode is av ail a b l e ? crop ped termi nal p i ns f e a t u r e s ? 7.00 mm (0.28i nch) di git hig h ? e x c e l l e n t d i g i t a p p e a r a n c e ? 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 s e g m e n t ? rohs com p li a n t package di mensions 7 . 00 ( . 28 " ) 0.9 5 0. 8 5 4. 50 6. 70 0 . 50 8. 00 32. 20 pi n1 2.5 4 *5 =12. 70 8. 0 0 10. 10 4. 0 0 4.00 0. 45 7. 6 2 5. 8 0 d6 d2 d5 d3 f e d4 d g c b a 10 .0 notes: 1. all dim ens ion s are in mil limet ers(inche s ), t o lerance is + 0.25mm(0.01i nch)unl e ss 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. http://
lightkey spec no: ds10121595 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: 0 086- 574- 863 2228 2 d a te: jul/20/201 1 dat a shee t of 0.28 inch four digit 7 segment led displa y internal circuit diagram l d 2 8 4 1 a ( c o m m o n c a t h o d e ) ld28 41 b (common ano d e) selection guide four digits 7 segment le d display , digit he igh t: 7. 00mm(0.28in c h), exte rnal dimensions : 32.20x 10.10 x 5 .80mm (l x w x h) part no. chip iv @if=20ma iv @if=20ma one seg one dp common cathode common anod e material c o l o r w l d m i n . ty p. m i n . ty p. ld28 41ar ld28 41br g a a l a s super r e d 640 8 10 8 10 ld28 41ad ld28 41bd gaalas h i - r e d 6 4 0 1 8 2 5 1 8 2 5 ld28 41ao ld28 41bo gaasp oran ge 625 7 9 7 9 ld28 41ay ld28 41by gaasp yellow 588 8 10 8 10 ld28 41ag ld28 41bg g a p gree n 568 7 9 7 9 ld28 41aur ld28 41bur algainp u ltra red 640 30 45 3 0 45 ld28 41auo ld28 41buo algainp u ltra o r an ge 625 45 60 4 5 60 ld28 41aua ld28 41bua algainp u ltra ambe r 605 30 45 3 0 45 ld28 41auy ld28 41buy algainp u ltra yello w 595 30 45 3 0 45 ld28 41aug ld28 41bug algainp u ltra g r ee n 573 30 45 3 0 45 ld28 41apg ld28 41bpg ingan pure g r e e n 525 120 300 120 300 ld28 41aub ld28 41bub ingan ultra b l u e 470 30 45 3 0 45 ld28 41auw ld28 41buw ingan ultra white \ 100 120 100 120 u n i t : \ \ \ n m m c d m c d m c d m c d http://
lightkey spec no: ds10121595 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 0.28 inch four digit 7 segment led display electrical characteristics & absolute maximum ratings electrical characteristics [1] absolute maximum ratings [1] forward voltage@ if=20ma color typ. max. reverse current vr=5v power dissipation dc forward current peak forward current [2] per seg. 1.8 2.2 30 60 25 100 super red per dp 1.8 2.2 30 60 25 100 per seg. 1.8 2.2 30 60 25 100 hi-red per dp 1.8 2.2 30 60 25 100 per seg. 2.1 2.5 30 80 30 100 orange per dp 2.1 2.5 30 80 30 100 per seg. 2.1 2.5 30 80 30 100 yellow per dp 2.1 2.5 30 80 30 100 per seg. 2.2 2.5 30 80 30 100 green per dp 2.2 2.5 30 80 30 100 per seg. 1.9 2.6 30 60 30 100 ultra red per dp 1.9 2.6 30 60 30 100 per seg. 2 2.6 30 65 30 100 ultra orange per dp 2 2.6 30 65 30 100 per seg. 2 2.6 30 65 30 100 ultra amber per dp 2 2.6 30 65 30 100 per seg. 2 2.6 30 65 30 100 ultra yellow per dp 2 2.6 30 65 30 100 per seg. 2.1 2.6 30 75 30 100 ultra green per dp 2.1 2.6 30 75 30 100 per seg. 3.5 4 30 110 30 100 pure green per dp 3.5 4 30 110 30 100 per seg. 3.5 4 30 120 30 100 ultra blue per dp 3.5 4 30 120 30 100 per seg. 3.5 4 30 120 30 100 ultra white per dp 3.5 4 30 120 30 100 unit: \ v v ua mw ma ma notes: 1. at ta = 25 c. 2. peak forward current at 1/10 duty cycle, 0.1ms pulse. http://
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