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In order to keep this display in production over the long term, we have revised it to the CFAH4004A1-TFH-JT. Please contact support with any questions.

40x4 Character LCD Dark on Gray

Part Number: CFAH4004A-TFH-JT

Parallel Character LCD 40x4, RoHS Compliant, White Edge LED Backlight, FSTN Positive, 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 126g

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	FSTN/Light Gray
Polarizer	Transflective
View Direction	6 o'clock
Sunlight Readable	Yes

Backlight Color	White
Backlight Type	LED
Mode	Positive
Foreground Color	Dark
Background Color	Light Gray

Electrical Specification

Electrical Specifications

Supply Voltage for Logic Minimum	4.5V
Supply Voltage for Logic Maximum	5.5V
Supply Voltage for Logic Typical	5V
Supply Voltage for Driving Panel Typical	4.35V

Supply Current Minimum	1.8mA
Supply Current Maximum	7mA
Supply Current Typical	3.5mA
Module Connector Pitch	0.1mm

Backlight Specification
Backlight Electrical Specifications

Forward Voltage Minimum 3.4V

Forward Voltage Maximum 3.6V

Forward Voltage Typical 3.5V

Forward Current Minimum 20mA

Forward Current Maximum 80mA

Forward Current Typical 64mA
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
CFAH4004ATFHJT 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%

40x4 Character LCD Dark on Gray (CFAH4004A-TFH-JT)

Notices

Part Change Notices

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Part Change Notice #11333: Updated Parts Now Shipping

Product Affected:	CFAH4004A-TFH-JT
Date Issued:	March 10, 2025
Summary:	Updated Parts Now Shipping
Description:	The changes mentioned in PCN #11170 are complete and the new parts (CFAH4004A1TFHJT) are shipping. You can place your order here: https://www.crystalfontz.com/product/cfah4004a1tfhjt-40x4-character-lcd-dark-on-gray

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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40x4 Character LCD Dark on Gray

Part Number: CFAH4004A-TFH-JT

Product Variations

Colors

Physical Characteristics

Optical Characteristics

Electrical Specifications

Backlight Electrical Specifications

Environmental

Electronics

Part Change Notices

Subscribe to Part Change Notices by email or RSS

Part Change Notice #11333: Updated Parts Now Shipping

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

Forward Voltage Minimum	3.4V
Forward Voltage Maximum	3.6V
Forward Voltage Typical	3.5V

Forward Current Minimum	20mA
Forward Current Maximum	80mA
Forward Current Typical	64mA

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

Weight	126g
Pin Count	18

40x4 Character LCD Dark on Gray

Part Number: CFAH4004A-TFH-JT

Product Variations

Colors

Physical Characteristics

Optical Characteristics

Electrical Specifications

Backlight Electrical Specifications

Environmental

Electronics

Compatible Software

Part Change Notices

Subscribe to Part Change Notices by email or RSS

Part Change Notice #11333: Updated Parts Now Shipping

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