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Radiant Electronics Limited

40x4 Character LCD Display Module

RD4004A  is widely used among 40x4 character LCD displays.

The following color options are most widely ordered:

  • RD4004A-B White on Blue
  • RD4004A-Y Blue on White
  • RD4004A-G Black on Gray  

In addition, a wide range of customized options are available for this model, including:

  • Different Backlight & Color options (Including black color)
  • Different Voltage (3.3V, 5.0V and other customized voltage)
  • Different Interface (Including Serial SPI, I2C interface)
Different Temperature (Including Extended high temperature)


Module size(W x H x D) 190 x 54 x 13.3 mm
Viewing area(W x H) 149 x 30 mm
Character Size 2.8 x 4.9 mm
Dot Size 0.5 x 0.55 mm
Dot pitch (W x H) 0.57 x 0.62 mm
Interface 8-bit Parallel interface
Driver Condition 1/16 Duty , 1/5 Bias
Driver IC AIP31066
Operating temperature -20 - 70 ℃



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