ROHM LM-1256 Series LED Displays Handbook

The LM-1256 series are 16*16 matrix displays which can be used in a wide variety of applications, including alpha-bet, numeric, symbol, and graphic dis- plays.


ROHM LM-1256 Series LED Displays Handbook - cover page
Brand
ROHM
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
4
File format
PDF
File size
93 KB
Published
05 April, 2012
Updated
30 September, 2023
Model
LM-1256
MD5 checksum
15D4E3BDBBA555370A66E1807BBD5B8B

About this manual

The LM-1256 series are 16 × 16 matrix LED displays (unit: mm) offered in red color. They are suitable for a wide range of applications such as alphanumeric, numeric, and symbol displays.

The document contains a pin‑assignment table, absolute maximum ratings, electrical and optical characteristics, luminous intensity data, and an appendix with legal and usage notes. It also includes a brief internal circuit schematic and selection guide for designers.

What's inside

  • Features
  • Selection guide
  • Pin assignments (Top view)
  • Pin assignment table
  • Absolute maximum ratings
  • Electrical and optical characteristics
  • Luminous intensity
  • Appendix
  • Notes

Specifications

Matrix size16 × 16 dot matrix
External dimensions32 × 32 × 5.4 mm
Emitter typeCircular, 1.6 mm diameter
Power dissipation50 mW
Forward current (per dot)20 mA
Peak forward current (pulse)60 mA (1/16 duty)
Reverse voltage4 V
Operating temperature range-20 °C to +50 °C
Storage temperature range-30 °C to +75 °C
Forward voltage (20 mA)Typical 1.75 V, Max 25 V
Luminous intensity (Red)Min 22 cd, Typical 56 cd

Frequently asked questions

What is the typical forward voltage of the LM-1256 at 20 mA?

The typical forward voltage is 1.75 V (maximum 25 V).

What is the maximum power dissipation allowed for the LM-1256?

The device can dissipate up to 50 mW.

What are the operating temperature limits for the LM-1256 series?

It operates from –20 °C to +50 °C.

What is the luminous intensity range for the red type of the LM-1256?

The red type provides a minimum of 22 cd and a typical value of 56 cd.

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