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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: KEM
  • Model Number: KEM-SMD3931-BSR
  • Usage: Indoor
  • Tube Chip Color: Yellow
  • Display Function: Animation
  • Pixels: 20mm
  • Screen Dimension: 29.4*15mm
  • Digit height: 0.39"
  • Digit quantity: Three / 3 digit
  • Full size: 29.4*15*3.75mm
  • Emitting color: super red
  • Wavelength: 625-640nm
  • Luminous intensity: 100mcd/chip
  • Segment color: white diffused
  • Surface color: Gray
  • Input voltage: 2.1-2.5V (7 segment led smd display)

Packaging & Delivery

Packaging Details EPE (7 segment led smd display)
7 segment led smd display
7 segment led smd display
7 segment led smd display
Delivery Time Shipped in 6 days after payment

0.39 inch 3 digit 7 segments smd led displays

Part numberKEM-3931SMD-A/BEmitting colorred/blue/amber/green/white/yellow

Common anode

Common cathode

Epoxy colorwhite/blue/red/green/yellow
Currenty20mASurface colorBlack/gray/white

Selection guide   (7 segment led smd display)



Package dimension & Internal circuit diagram (7 segment led smd display)

If the circuit  cannot meet your need, pls advise me for other choices. Thank you. 


All of colors are available   (7 segment led smd display)






Digit height


Digit number


Segment color


Face color


Emitting color

Ultra red

Dominant wavelength


Luminous intensity


Forward voltage

1.9 v/ chip

Reverse voltage

5 v

Recommend used current


Operating temperature range



 Choice for Surface color & Epoxy color   (7 segment led smd display)


 0.2 inch single digit 7 segment led smd display for your choice:











Delivery time

 Quantity                        lead time

1-10Kpcs                                       3-7 days

10.1K-50Kpcs                              7-15 days


 All delivery way is available.   (7 segment led smd display)




Under proper use, all the displays made of Epistar led chips are with

3 years warranty.   (7 segment led smd display)


Why choose us?


What we can do?

  1. We can supply you all kinds of 7 segment LED display: 


 ---Digit size: from 0.25" to 16" 


---Digit Numer: 1, 2, 3, 4, 5 and 6 digits 


2. Segment : 7 segment and 14 segment both available 


3. Available Emitting color: Red, green, blue, yellow, amber, white, bi-color 


4. Available surface color: black,grey and red 


5. Lens color: milky white or same with emitting color



In order to ensure you receive your order with low tax upon import, we will declare  with 

a lower value according to your inform. 


Factory & main process pictures:




With over 12 years experience in LED field, we do


believe we can become your reliable supplier!

Transaction History of the Supplier

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Transaction Details

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China (Mainland)
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Supplier's Trade Assurance Limit: US $202,000
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