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Manufacturers without LED spectrometers have a hard time producing products with pure colors. Leakage current,LED is a one-way conductive luminous body, if there is a reverse current, it is called leakage, leakage current large LED, short life, low price.

Yellow LED Seven Segment Display 0.39" Four Digit 4 Common Cathode CC
Yellow LED Seven Segment Display 0.3" Three Digit 3 0.3 Common Cathode CC
Blue 7 Segment Display LED 7-Segment 0.52" 2-Digit Dual Common Anode CA
5x7 Green LED Matrix Display Dot Diameter 1.9mm 0.7" Common Cathode
Orange Seven Segment LED Display 0.60inch 0.60" Single Digit 1 Common Anode CA
Orange Seven Segment LED Display 0.5 inch 0.5" Four Digit 4 Common Anode 0.50inch
Green 7 Segment LED Display 0.56 inch Dual Digit 2 7-seg CC CA
Orange Seven Segment LED Display 0.56 inch 0.56" Dual Digit 2 Common Anode
White 8x8 Dot Matrix Display LED 3.0mm Diameter 1.2 inch Anode Cathode
Yellow LED Seven Segment Display 1.2" 1.2 inch Single Digit 1 Common Cathode CC 1.2

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