LightKey Datasheet of 4.00 inch 4x4 Dual Color Dot Matrix LED Display LM40044A/BRG Series – 4.00 inch 4x4 Dual Color 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 Emitted colors: red and green 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 PI N 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 5.08×5=25.4 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: DS10121845 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 Dual Color Dot Matrix LED Display Internal Circuit Diagram LM40044ARG (Common Cathode Row) LM40044BRG (Common Anode Row) COL . 1 2 3 4 PI N 3 10 9 5 6 7 NO. 1 12 PI N NO. COL . 1 2 3 4 PI N 3 10 9 5 6 7 NO. 1 12 PI N NO. 1 11 1 11 2 8 2 8 3 4 3 4 4 2 4 2 Selection Guide 4.00 inch 4x4 Red-Green LED dot matrix module, Matrix Height: 108.80mm(4.00 inch), External Dimensions: 108.80x108.80x17.00mm (LxWxH) Part No. Description Standard Brightness Ultra-High Brightness Chip Common Common Cathode Row Anode Row LM40044ARG LM40044BRG LM40044AURUG SPEC NO: DS10121845 HTTP://WWW.LTKEY.COM LM40044BURUG REV: A.4 Material Color Iv(mcd)@20mA One Dot W LD (nm) Min. Typ. Super Red 640 24 30 GaP Green 568 21 27 AlGaInP Ultra Red 640 90 135 AlGaInP Ultra Green 573 90 135 GaAlAs 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 Dual Color Dot Matrix LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical optical Absolute Maximum Ratings[1] [1] Characteristics Color VF(V) @ IF=20mA[2] Reverse Current Power DC Forward VR=5V Dissipation Current (uA) (mW) (mA) Peak Forward Current[3] (mA) Reverse Voltage (V) Typ. Max. Super Red 7.2 8.8 100 240 25 100 5 Green 8.8 5.0 100 320 30 100 5 Ultra Red 7.6 10.4 100 240 30 100 5 Ultra Green 8.4 10.4 100 300 30 100 5 Operating/ Storage Temp.: -40 to +80 deg.; Lead Solder Temp.: 260 deg. for 3-5 Sec. 2mm below package base 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: DS10121845 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