lightkey spec no: ds10121800 rev: a.4 checked: emil y zhou approved: m.h. lin page: 1/3 http://www.ltkey.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 1.20 inch 5x7 dual color dot matrix led display lm12057a/b series -1.20 inch 5x7 dot matrix led display features ? 39.10mm (1.20inch) digit high ? dot size: diameter 3.00mm ? pitch: 4.60mm ? wide viewing angle ? range of emitted colors ? i.c. compatible ? low power consumption ? white segment ? rohs compliant package dimensions 1 * / $ 0 - 3 0 8 notes: 1. all dimensions are in millimeters (inches), tolerance is + 0.25mm (0.01inch) unless other wise noted. 2. specifications are subj ect to change without notice. 3. the gap between the reflector and pcb shall not exceed 0.25mm. attention observe precautions for handling electrostatic discharge sensitive devices available options ? alternative emitting luminosity: standard or high brightness version ? alternative emitted color ? alternative segment color ? alternative font ? common cathode is available ? cropped terminal pins
lightkey spec no: ds10121800 rev: a.4 checked: emil y zhou approved: m.h. lin page: 2/3 http://www.ltkey.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 1.20 inch 5x7 dual color dot matrix led display internal circuit diagram common cathode row common anode row selection guide 1.2 inch 8x8 red-green led dot matrix module, matrix height: 32mm(1.2inch), external dimensions: 32x32x8mm (lxwxhmm) part no. chip iv(mcd)@20ma one dot description cathode row anode row material color w ld (nm) min. typ. gaalas super red 640 8 10 standard brightness lm12057crg lm12057drg gap green 568 7 9 algainp ultra red 640 30 45 ultra-high brightness lm12057curug lm12057durug algainp ultra green 573 30 45
lightkey spec no: ds10121800 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 1.20 inch 5x7 dual color dot matrix led display electrical characteristics & absolute maximum ratings 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. lm12057c/drg electrical characteristics [1] absolute maximum ratings [3] vf(v) @ if=20ma [2] color typ. max. reverse current vr=5v (ua) power dissipation (mw) dc forward current (ma) peak forward current [2] (ma) reverse voltage (v) super red 1.8 2.2 30 60 25 100 5 green 2.2 2.5 30 80 30 100 5 ultra red 1.9 2.6 30 60 30 100 ultra green 2.1 2.6 300 75 30 100 5 operating/ storage temp.: -40 to +80 deg.; lead solder temp.: 260 deg. for 3-5 sec. 2mm below package base
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