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In order to keep this display in production over the long term, we are revising it to the CFAH4004A1YYH-JT. Please contact support with any questions.

Yellow-Green 40x4 Character Module

Part Number: CFAH4004A-YYH-JT

Parallel Character LCD 40x4, RoHS Compliant, Yellow/Green LED Backlight, STN Positive, Yellow/Green, Transflective -20°C to +70°C 6:00

Available in several variations of backlight and polarizer (minimum order may be required)
8-bit or 4-bit parallel interface
Industry-standard HD44780 compatible controller

Product Variations

Colors	White on Blue White LED Backlight Dark on Yellow-Green Yellow-Green LED Backlight Dark on Light Gray White LED Backlight

Physical Characteristics
Physical Characteristics

Characters x Lines 40 x 4

Module Overall width height depth

millimeters 190 54 13.6

inches 7.48 2.13 0.54

PCB Outline width height depth

millimeters 190 54 13.6

inches 7.48 2.13 0.54

Diagonal Dimension 5.6"

Viewing Area Width Height

millimeters 147 29.5

inches 5.79 1.16

Active Area Width Height

millimeters 140.45 23.16

inches 5.53 0.91

Character Size Width Height

millimeters 2.78 4.89

inches 0.109 0.193

Character Pitch Width Height

millimeters 3.53 6.09

inches 0.139 0.240

Dot Size Width Height

millimeters 0.5 0.55

inches 0.020 0.022

Dot Pitch Width Height

millimeters 0.57 0.62

inches 0.022 0.024

Weight 128g

Pin Count 18

Module Overall	width	height	depth
millimeters	190	54	13.6
inches	7.48	2.13	0.54

PCB Outline	width	height	depth
millimeters	190	54	13.6
inches	7.48	2.13	0.54

Viewing Area	Width	Height
millimeters	147	29.5
inches	5.79	1.16

Active Area	Width	Height
millimeters	140.45	23.16
inches	5.53	0.91

Character Size	Width	Height
millimeters	2.78	4.89
inches	0.109	0.193

Character Pitch	Width	Height
millimeters	3.53	6.09
inches	0.139	0.240

Dot Size	Width	Height
millimeters	0.5	0.55
inches	0.020	0.022

Dot Pitch	Width	Height
millimeters	0.57	0.62
inches	0.022	0.024

Optical Characteristics

Glass Type/Glass Color	STN/Yellow-Green
Polarizer	Transflective
View Direction	6 o'clock
Sunlight Readable	Yes

Backlight Color	Yellow-Green
Backlight Type	LED
Mode	Positive
Foreground Color	Dark
Background Color	Yellow-Green

Electrical Specification
Electrical Specifications

Module Connector Pitch 0.1mm
Environmental
Environmental

Operating Temperatures min max

Celsius -20° 70°

Fahrenheit -4° 158°

Storage Temperatures min max

Celsius -30° 80°

Fahrenheit -22° 176°

Humidity min max

Non-condensing 0% 90%
Electronics
Electronics

Controller Documents Sitronix ST7066U
Dot Matrix LCD Controller/Driver

Interface 4-bit Parallel, 8-bit Parallel
Datasheets

picture_as_pdf
CFAH4004AYYHJT Datasheet
Files and Downloads

folder_zip CAD Export - CFAH4004A 2D CAD
picture_as_pdf 1 to 1 Template - CFAH4004A 1 TO 1 Lf Side.pdf
picture_as_pdf 1 to 1 Template - CFAH4004A 1 TO 1 Rt Side.pdf
link Demo Code Repository on Github

Operating Temperatures	min	max
Celsius	-20°	70°
Fahrenheit	-4°	158°

Storage Temperatures	min	max
Celsius	-30°	80°
Fahrenheit	-22°	176°

Humidity	min	max
Non-condensing	0%	90%

Yellow-Green 40x4 Character Module (CFAH4004A-YYH-JT)

Notices

Part Change Notices

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End-Of-Life #11170: End-of-Life Notification

Products Affected:	CFAH4004A-YYH-JT, CFAH4004A-TFH-JT, CFAH4004A-TMI-JT
Date Issued:	January 23, 2023
Summary:	End-of-Life Notification
Description:	The bezel used on these displays is being modified to improve manufacturability. The part numbers are being updated to reflect this change. The replacement part numbers are listed below. CFAH4004A-YYH-JT -> CFAH4004A1-YYH-JT CFAH4004A-TMI-JT -> CFAH4004A1-TMI-JT CFAH4004A-TFH-JT -> CFAH4004A1-TFH-JT There is a limited inventory of the old part available. Contact sales@crystalfontz.com for the latest inventory levels.
Reason:	Manufacturability improvement.
Availability:	Contact Crystalfontz Support for up-to-date information on the replacement parts by emailing support@crystalfontz.com.

Part Change Notice #11034: The Printed Circuit Boards of the parts listed are being revised as part of our continuing product improvement process.

Products Affected:	CFAH4004A-YYH-JT, CFAH4004A-TFH-JT, CFAH4004A-TMI-JT
Date Issued:	January 29, 2019
Summary:	The Printed Circuit Boards of the parts listed are being revised as part of our continuing product improvement process.
Description:	The layout of the circuit board is being changed to improve manufacturability. At the same time, the Temperature Compensation circuit will be improved.
Impact:	There should be no impact to the customer. The form, fit, and function of the modules will remain the same.
Recommendation:	Customers who wish to test the modules with the revised PCBs should contact Sales to obtain samples.
Availability:	The modules with the revised PCBs will be available as current stocks are replaced.

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Yellow-Green 40x4 Character Module

Part Number: CFAH4004A-YYH-JT

Product Variations

Colors

Physical Characteristics

Optical Characteristics

Electrical Specifications

Environmental

Electronics

Part Change Notices

Subscribe to Part Change Notices by email or RSS

End-Of-Life #11170: End-of-Life Notification

Part Change Notice #11034: The Printed Circuit Boards of the parts listed are being revised as part of our continuing product improvement process.

LCD Software

User Forum

Tech Support

Controller Documents	Sitronix ST7066U Dot Matrix LCD Controller/Driver
Interface	4-bit Parallel, 8-bit Parallel

Weight	128g
Pin Count	18

Yellow-Green 40x4 Character Module

Part Number: CFAH4004A-YYH-JT

Product Variations

Colors

Physical Characteristics

Optical Characteristics

Electrical Specifications

Environmental

Electronics

Compatible Software

Part Change Notices

Subscribe to Part Change Notices by email or RSS

End-Of-Life #11170: End-of-Life Notification

Part Change Notice #11034: The Printed Circuit Boards of the parts listed are being revised as part of our continuing product improvement process.

LCD Software

User Forum

Tech Support