In order to keep this display in production over the long term, we have revised it to the CFAP400300B1-0420. Any backorders placed now will be fulfilled with the new part when it becomes available. Please contact with any questions.

4.2" Black & White ePaper Display

Part Number: CFAP400300B0-0420

Crisp, high-contrast, 4.2" Black & White ePaper Display. Perfect for when you need to show something for a long time (think shelf labels or signage) while using minimal power. Once this display is updated, you can remove all power connections and it will continue to display indefinitely! With ZERO power! Read more about how ePaper displays work on our blog.

Use our free ePaper software to prepare your bitmap image for this display.

Adapter / Breakout Board
Want to get this display up and running quickly with an Arduino or Seeeduino? We have this ePaper Adapter Board that makes connecting our ePaper simple and fast or check out our complete kits below

*This epaper display DOES NOT support partial updates

Product Variants

  • square_foot Physical Characteristics

    Physical Characteristics

    Column Dots x Row Dots 400 x 300
    Module Overall width height depth
    millimeters 91 77 1.18
    inches 3.583 3.031 0.046
    *width / height does not include Foldable Tab
    Diagonal Dimension 4.17"
    Active Area Width Height
    millimeters 84.8 63.6
    inches 3.339 2.504
    Dot Pitch Width Height
    millimeters 0.212 0.212
    inches 0.0083 0.0083
    Optional Connectors CS050Z24GA0
    Flexible Cable (FFC/FPC) length
    millimeters 18.5
    inches 0.728
    Weight 16g
    Pin Count 24
  • visibility Optical Characteristics

    Optical Characteristics

    Glass Type ePaper
    View Angle Ultra-Wide°
    Foreground Color Black
    Background Color White
  • electric_bolt Electrical Specification

    Electrical Specifications

    Supply Voltage for Logic Minimum 2.3V
    Supply Voltage for Logic Maximum 3.6V
    Supply Voltage for Logic Typical 3.3V
    Supply Current Minimum 0.005mA
    Supply Current Maximum 8mA
    Module Connector Pitch 0.5mm
  • nature Enviromental


    Operating Temperatures min max
    Celsius 50°
    Fahrenheit 32° 122°
    Storage Temperatures min max
    Celsius -25° 70°
    Fahrenheit -13° 158°
    Humidity min max
    Non-condensing 40% 70%
  • cable Electronics


    Interface SPI
  • picture_as_pdf Datasheets
  • download Files and Downloads

Part Change Notice

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  • text_snippet
    Part Change Notice #11081: Part Number Change
    Product Affected: CFAP400300B0-0420
    Date Issued: March 26, 2021
    Summary: Part Number Change
    Description: The part number is changing to CFAP400300B1-0420. The only difference between the two parts is the controller reset sequence is slightly different. The CFAP400300B1-0420 needs to be reset three times instead of one.
    Reason: The controller for the display has shown to sometimes exhibit errors if it is not reset using the new sequence.
    Availability: The CFAP400300B1-0420 is available now. Contact for pricing and lead time.