LightKey Datasheet of 0.25 inch Four Digit 7 Segment LED Display LD2541U/V Series - 0.25 inch dual 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 3.50 10.0° DIG.1 A 11.00 6.2(.25") 0.80 F E DIG.2 DIG.3 DIG.4 D1 G B C D2 D D3 PIN1 6.00 6.00 6.00 7.40 0.50 5.10 36.00 2.54*5=12.70 0.45 8.10 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: DS10121536 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 1/3 DATE: Jul/20/2011 LightKey Datasheet of 0.25 inch Four Digit 7 Segment LED Display Internal Circuit Diagram LD2541U (Common Cathode) LD2541V (Common Anode) Selection Guide Four Digits 7 Segment LED Display, Digit Height: 6.20mm(0.25inch), External Dimensions: 36.00x11.00x5.10mm (Lx W x H) Part No. Chip Common Common Cathode Anode Material Color WLD Iv@IF=20mA Iv@IF=20mA One Seg One DP Min. Typ. Min. Typ. LD2541UR LD2541VR GaAlAs Super Red 640 8 10 8 10 LD2541UD LD2541VD GaAlAs Hi-Red 640 18 25 18 25 LD2541UO LD2541VO GaAsP Orange 625 7 9 7 9 LD2541UY LD2541VY GaAsP Yellow 588 8 10 8 10 LD2541UG LD2541VG GaP Green 568 7 9 7 9 LD2541UUR LD2541VUR AlGaInP Ultra Red 640 30 45 30 45 LD2541UUO LD2541VUO AlGaInP Ultra Orange 625 45 60 45 60 LD2541UUA LD2541VUA AlGaInP Ultra Amber 65 30 45 30 45 LD2541UUY LD2541VUY AlGaInP Ultra Yellow 595 30 45 30 45 LD2541UUG LD2541VUG AlGaInP Ultra Green 573 30 45 30 45 LD2541UPG LD2541VPG InGaN Pure Green 525 120 300 120 300 LD2541UUB LD2541VUB InGaN Ultra Blue 470 30 45 30 45 LD2541UUW LD2541VUW InGaN Ultra White \ 100 120 100 120 Unit: \ \ \ nm mcd mcd mcd mcd SPEC NO: DS10121536 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 2/3 DATE: Jul/20/2011 LightKey Datasheet of 0.25 inch Four Digit 7 Segment LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical Characteristics[1] Forward Color Reverse Voltage@ Current IF=20mA 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] VR=5V Power Dissipation DC Peak Forward Forward Current 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 °C. 2. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse. SPEC NO: DS10121536 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 3/3 DATE: Jul/20/2011