LightKey Datasheet of 0.28 inch Four Digit 7 Segment LED Display LD2841A/B Series - 0.28 inch Four Digit 7 Segment LED Display ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Features Available options ¾ 7.00 mm (0.28inch) 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 4.50 0.85 0.95 10.10 F D6 D2 PIN1 8.00 4.00 4.00 A D5 7.00(.28") 10.0° G B C E D D3 D4 8.00 6.70 0.50 5.80 32.20 0.45 7.62 2.54*5=12.70 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: DS10121595 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 0.28 inch Four Digit 7 Segment LED Display Internal Circuit Diagram LD2841A (Common Cathode) LD2841B (Common Anode) Selection Guide Four Digits 7 Segment LED Display, Digit Height: 7.00mm(0.28inch), External Dimensions: 32.20x10.10x5.80mm (L x 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. LD2841AR LD2841BR GaAlAs Super Red 640 8 10 8 10 LD2841AD LD2841BD GaAlAs Hi-Red 640 18 25 18 25 LD2841AO LD2841BO GaAsP Orange 625 7 9 7 9 LD2841AY LD2841BY GaAsP Yellow 588 8 10 8 10 LD2841AG LD2841BG GaP Green 568 7 9 7 9 LD2841AUR LD2841BUR AlGaInP Ultra Red 640 30 45 30 45 LD2841AUO LD2841BUO AlGaInP Ultra Orange 625 45 60 45 60 LD2841AUA LD2841BUA AlGaInP Ultra Amber 605 30 45 30 45 LD2841AUY LD2841BUY AlGaInP Ultra Yellow 595 30 45 30 45 LD2841AUG LD2841BUG AlGaInP Ultra Green 573 30 45 30 45 LD2841APG LD2841BPG InGaN Pure Green 525 120 300 120 300 LD2841AUB LD2841BUB InGaN Ultra Blue 470 30 45 30 45 LD2841AUW LD2841BUW InGaN Ultra White \ 100 120 100 120 Unit: \ \ \ nm mcd mcd mcd mcd SPEC NO: DS10121595 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 0.28 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: DS10121595 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