LightKey Datasheet of 0.25 inch Three Digit 7 Segment LED Display LD2531A/B Series - 0.25 inch Three Digit 7 Segment LED Display ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Features Available options ¾ 6.20 mm (0.25inch) digit high ¾ ¾ Excellent digit appearance ¾ Wide viewing angle ¾ Range of emitted colors ¾ I.C. compatible ¾ Low power consumption ¾ White segment ¾ RoHS compliant Alternative emitting luminosity: Standard or high brightness version ¾ ¾ ¾ ¾ ¾ Alternative emitted color Alternative segment color Alternative font Common Cathode is available Cropped terminal pins Package Dimensions A F G E B C D 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: DS10121509 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 0.25 inch Three Digit 7 Segment LED Display Internal Circuit Diagram LD2531A (Common Cathode) 10 8 DIG. 1 B A 7 C 9 D 2 E 3 F 4 G 1 6 DIG. 3 DIG. 2 A B C D E F G B A C D E F G 5 LD2531B (Common Anode) Selection Guide Three digits 7 Segment LED Display, Digit Height: 6.20mm(0.25inch), External Dimensions: 15.00x8.00x4.00mm (LxWxHmm) Part No. Chip Common Common Cathode Anode Material Color WLD Iv@IF=20mA Iv@IF=20mA One Seg One DP Min. Typ. Min. Typ. LD2531AR LD2531BR GaAlAs Super Red 640 8 10 8 10 LD2531AD LD2531BD GaAlAs Hi-Red 640 18 25 18 25 LD2531AO LD2531BO GaAsP Orange 625 7 9 7 9 LD2531AY LD2531BY GaAsP Yellow 588 8 10 8 10 LD2531AG LD2531BG GaP Green 568 7 9 7 9 LD2531AUR LD2531BUR AlGaInP Ultra Red 640 30 45 30 45 LD2531AUO LD2531BUO AlGaInP Ultra Orange 625 45 60 45 60 LD2531AUA LD2531BUA AlGaInP Ultra Amber 65 30 45 30 45 LD2531AUY LD2531BUY AlGaInP Ultra Yellow 595 30 45 30 45 LD2531AUG LD2531BUG AlGaInP Ultra Green 573 30 45 30 45 LD2531APG LD2531BPG InGaN Pure Green 525 120 300 120 300 LD2531AUB LD2531BUB InGaN Ultra Blue 470 30 45 30 45 LD2531AUW LD2531BUW InGaN Ultra White \ 100 120 100 120 Unit: \ \ \ nm mcd mcd mcd mcd SPEC NO: DS10121509 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 0.25 inch Three Digit 7 Segment LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical optical Parameter Forward Voltage Emitted color Super Red Hi-Red Orange Yellow Green Ultra Red Ultra Orange Ultra Amber Ultra Yellow Ultra Green Pure Green Ultra Blue Ultra White Unit: Absolute Maximum Ratings[1] Characteristics[1] @ IF=20mA Reverse Current VR=5V Power DC Forward Dissipation Current Peak Forward Current[2] Typ. Max. Per Seg. 1.8 2.2 30 60 25 100 Per DP 1.8 2.2 30 60 25 100 Per Seg. 1.8 2.2 30 60 25 100 Per DP 1.8 2.2 30 60 25 100 Per Seg. 2.1 2.5 30 80 30 100 Per DP 2.1 2.5 30 80 30 100 Per Seg. 2.1 2.5 30 80 30 100 Per DP 2.1 2.5 30 80 30 100 Per Seg. 2.2 2.5 30 80 30 100 Per DP 2.2 2.5 30 80 30 100 Per Seg. 1.9 2.6 30 60 30 100 Per DP 1.9 2.6 30 60 30 100 Per Seg. 2 2.6 30 65 30 100 Per DP 2 2.6 30 65 30 100 Per Seg. 2 2.6 30 65 30 100 Per DP 2 2.6 30 65 30 100 Per Seg. 2 2.6 30 65 30 100 Per DP 2 2.6 30 65 30 100 Per Seg. 2.1 2.6 30 75 30 100 Per DP 2.1 2.6 30 75 30 100 Per Seg. 3.5 4 30 110 30 100 Per DP 3.5 4 30 110 30 100 Per Seg. 3.5 4 30 120 30 100 Per DP 3.5 4 30 120 30 100 Per Seg. 3.5 4 30 120 30 100 Per DP 3.5 4 30 120 30 100 V V uA mW mA mA \ Notes: 1. At Ta=25 deg. 2. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse SPEC NO: DS10121509 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