LightKey Datasheet of 0.80 inch Dual Digit 7 Segment LED Display LD8021A/B Series - 0.80 inch Dual Digit 7 Segment LED Display ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Features Available options ¾ 20.30 mm (0.80 inch) 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, black face ¾ RoHS compliant Alternative emitting luminosity: Standard or high brightness version ¾ ¾ ¾ ¾ ¾ Alternative emitted color Alternative face and segment color Alternative font Both CA and CC versions are available Cropped terminal pins Package Dimensions 12.40 10.0° DIG.1 DIG.2 A F 25.80 20.30(.80") 1.70 G E C D PIN 1 B DP 18.0 0.50 0.51 4.30 10.00 35.80 22.0 2.54*4=10.16 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: DS10121727 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 0.80 inch Dual Digit 7 Segment LED Display Internal Circuit Diagram LD8021A (Common Cathode) 14 13 DIG.1 A B C D 16 15 3 E 2 F G DP DIG.2 A 1 18 17 4 B C D 11 10 8 E 6 F G DP 5 12 7 9 LD8021B (Common Anode) 14 13 DIG.1 A B C D 16 15 3 E 2 F G DP DIG.2 A 1 18 17 4 B C 11 10 8 D E 6 F G DP 5 12 7 9 Selection Guide Dual Digits 7 Segment LED Display, Digit Height: 20.30mm(0.8inch), External Dimensions: 35.80x25.80x10.00mm (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. LD8021AR LD8021BR GaAlAs Super Red 640 8 10 8 10 LD8021AD LD8021BD GaAlAs Hi-Red 640 18 25 18 25 LD8021AO LD8021BO GaAsP Orange 625 7 9 7 9 LD8021AY LD8021BY GaAsP Yellow 588 8 10 8 10 LD8021AG LD8021BG GaP Green 568 7 9 7 9 LD8021AUR LD8021BUR AlGaInP Ultra Red 640 30 45 30 45 LD8021AUO LD8021BUO AlGaInP Ultra Orange 625 45 60 45 60 LD8021AUA LD8021BUA AlGaInP Ultra Amber 605 30 45 30 45 LD8021AUY LD8021BUY AlGaInP Ultra Yellow 595 30 45 30 45 LD8021AUG LD8021BUG AlGaInP Ultra Green 573 30 45 30 45 LD8021APG LD8021BPG InGaN Pure Green 525 120 300 120 300 LD8021AUB LD8021BUB InGaN Ultra Blue 470 30 45 30 45 LD8021AUW LD8021BUW InGaN Ultra White \ 100 120 100 120 nm mcd mcd mcd mcd Unit: \ SPEC NO: DS10121727 \ 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 0.80 inch Dual Digit 7 Segment LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical optical Parameter Forward Hi-Red Orange Yellow Green Ultra Red Ultra Orange Ultra Amber Ultra Yellow Ultra Green Pure Green Ultra Blue Ultra White Unit: Reverse Voltage Emitted color Super Red Absolute Maximum Ratings[1] Characteristics[1] Current @ IF=20mA 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: DS10121727 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