LightKey Datasheet of 4.00 inch 4x4 Dot Matrix LED Display LM40044A/B Series – 4.00 inch 4x4 Dot Matrix LED Display ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Features Available options ¾ 108.80 mm (4.00 inch) digit high ¾ ¾ Dot size: Diameter 20.00 mm ¾ Pitch: 27.20 mm ¾ Wide viewing angle ¾ Range of emitted colors ¾ I.C. compatible ¾ Low power consumption ¾ White dot, grey or black face ¾ RoHS compliant Alternative emitting luminosity: Standard or high brightness version ¾ ¾ ¾ ¾ ¾ Alternative emitted color Alternative dot color Alternative face Both CC and CA versions are available Cropped terminal pins Package Dimensions 27.2×3=81.6 108.8(4.35 ) 17.0 PIN 1 94 . 6 2 7 . 2 × 3 = 8 1. 6 1 0 8 . 8( 4 . 3 5 ) Ø20.0(0.80 ) COL . 1 ROW 1 2 3 4 2 Ø0.80 3 4 5.08×3=15.24 Notes: 1. All dimensions are in millimeters (inches), Tolerance is + 0.25mm (0.01inch) unless other wise noted. 2. Specifications are subject to change without notice. 3. The gap between the reflector and PCB shall not exceed 0.25mm. SPEC NO: DS10121844 REV: A.4 HTTP://WWW.LTKEY.COM CHECKED: Emily Zhou TEL: 0086-574-86322282 APPROVED: M.H. Lin PAGE: 1/3 DATE: Jul/20/2011 LightKey Datasheet of 4.00 inch 4x4 Dot Matrix LED Display Internal Circuit Diagram LM40044A (Common Cathode Row) C OL . 1 PI N 8 NO. PI N NO. 2 3 4 7 3 4 LM40044B (Common Anode Row) CO L . 1 PI N 8 NO. PI N NO. 1 5 1 5 2 6 2 6 3 2 3 2 4 1 4 1 2 3 4 7 3 4 Selection Guide Part No. Chip Common Common Cathode Row Anode Row Material IV@IF=20mA Color WLD One Dot Min. Typ. LD40044AR LD40044BR GaAlAs Super Red 640 24 30 LD40044AD LD40044BD GaAlAs Hi-Red 640 54 75 LD40044AO LD40044BO GaAsP Orange 625 21 27 LD40044AY LD40044BY GaAsP Yellow 588 24 30 LD40044AG LD40044BG GaP Green 568 21 27 LD40044AUR LD40044BUR AlGaInP Ultra Red 640 90 135 LD40044AUO LD40044BUO AlGaInP Ultra Orange 625 135 180 LD40044AUA LD40044BUA AlGaInP Ultra Amber 605 90 135 LD40044AUY LD40044BUY AlGaInP Ultra Yellow 595 90 135 LD40044AUG LD40044BUG AlGaInP Ultra Green 573 90 135 LD40044APG LD40044BPG InGaN Pure Green 525 360 900 LD40044AUB LD40044BUB InGaN Ultra Blue 470 90 135 LD40044AUW LD40044BUW SMD Ultra White \ 300 360 \ \ nm mcd mcd Unit: SPEC NO: DS10121844 HTTP://WWW.LTKEY.COM \ REV: A.4 CHECKED: Emily Zhou TEL: 0086-574-86322282 APPROVED: M.H. Lin PAGE: 2/3 DATE: Jul/20/2011 LightKey Datasheet of 4.00 inch 4x4 Dot Matrix LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical optical Parameter Emitted Color [1] Characteristics Per Dot VF@ Reverse IF=20mA[2] Current Typ. Max. VR=5V Absolute Maximum Ratings[1] Power Dissipation DC Peak Forward Forward Current Current[3] Super Red Per Dot 7.2 8.8 50 240 25 100 Hi-Red Per Dot 7.2 8.8 50 240 25 100 Orange Per Dot 8.4 10 50 320 30 100 Yellow Per Dot 8.4 10 50 320 30 100 Green Per Dot 8.8 10 50 320 30 100 Ultra Red Per Dot 7.6 10.4 50 240 30 100 Ultra Orange Per Dot 8 10.4 50 260 30 100 Ultra Amber Per Dot 8 10.4 50 260 30 100 Ultra Yellow Per Dot 8 10.4 50 260 30 100 Ultra Green Per Dot 8.4 10.4 50 300 30 100 Pure Green Per Dot 14 16 50 440 30 100 Ultra Blue Per Dot 14 16 50 480 30 100 Ultra White Per Dot 14 16 50 480 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. SPEC NO: DS10121844 HTTP://WWW.LTKEY.COM REV: A.4 CHECKED: Emily Zhou TEL: 0086-574-86322282 APPROVED: M.H. Lin PAGE: 3/3 DATE: Jul/20/2011