Chip,LED luminous body is chip, different chip, the price is very different. Chips from Japan and the United States are more expensive. Generally, chips from Taiwan and China are cheaper than those from Japan and the United States (CREE).
Green 7 Segment LED Display
0.33 inch Four Digit 4 7-seg CC CA
Green 7 Segment LED Display
1 inch 1.0" Single Digit 1 7-seg CC CA
Yellow LED Seven Segment Display
4.0" 4 inch Single Digit 1 Common Cathode CC 4inch
Red Ultra Bright LED 7
Segment Display 0.4 inch 0.4" Three Digit Common Anode CA 0.40inch
Yellow Green LED 7 Segment
0.50-inch 1 Digit Single Display 0.50" Common Cathode CC
Red Ultra Bright LED 7
Segment Display 0.45 inch Three Digit Common Anode CA
Red Ultra Bright LED 7
Segment Display 0.3 inch 0.3" Dual Digit Common Anode CA
Yellow Green LED 7 Segment
0.43 inch 2 Digit Dual Display Common Cathode CC
Blue 7 Segment Display LED
7-Segment 0.80" 0.8 inch 1-Digit Single Common Anode CA
Red Ultra Bright LED 7
Segment Display 0.39 inch Four Digit Common Anode CA
when the two semiconductors are connected, they form a P-N junction between them. When an electric current is applied to the chip through the wire, the electrons are pushed toward the p-region, where they reunite with the hole and emit energy in the form of photons, which is how LEDs glow. Because the heat of LED lamp is not high, the electric energy is converted into light energy as much as possible, while the ordinary lamp transforms a lot of electric energy into heat energy because of the heat, which is wasted. LED lighting, by contrast, is energy efficient.
3203AB LED
3203AB 7-Segment
3203BB Display
3203BB 0.30 inch
Look at the chip and the size of the chip, the chip is the determining factor of the quality of the lamp bead, in general, the larger the chip is more stable, the higher the brightness, the better the heat dissipation, look at glue and phosphor, generally good products will use imported glue, packaged beads by hand without deformation, low quality glue will appear deformation and even cracking phenomenon, look at the bracket, in general, the bracket is silver plated red copper bracket. The advantage of silver plated red copper bracket is fast heat dissipation, which can better heat dissipation of lamp beads and small resistance. On the market, some businesses will use ceramic brackets to replace silver-plated red copper brackets, which have excellent thermal conductivity.
3491AGG LED
3491AGG 0.39 inch
3491BGG 7-Segment
3491BGG Display
Projective lens design, self-developed intelligent baffle for phase change film materials, matrix microarray LED light-emitting module packaging technology, It conforms to the national standard GB25991-2010 "LED headlamps for automobiles", the national standard for adaptive front lighting systems for automobiles (GB/T30036-2013), and EU ECER112 regulations. A layer of phase change film material is added between the light-emitting unit and the screen as an intelligent baffle for light-emitting LEDs, and the passage of the LED beam can be controlled by controlling the film material, so as to achieve accurate dimming of the LED beam.
Red
5651AGG LED
5651AGG 5-digit
5651BGG Segment
5651BGG 
