OK204-25-USB-OG-E Equivalent & Substitute Parts

Part Overview

The OK204-25-USB-OG-E is a character display module manufactured by Matrix Orbital, featuring an 80-character OLED display in a 20 x 4 format with 5 x 8 dot character resolution. This module communicates via USB interface and is designed for applications requiring compact alphanumeric display capabilities. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	OK204-25-USB-OG-E
Manufacturer	Matrix Orbital
Number of Characters	80
Display Format	20 x 4
Character Format	5 x 8 Dots
Display Type	OLED
Character Size	4.75mm H x 2.90mm W
Outline Dimensions (L x W x H)	98.00mm x 60.00mm x 23.00mm
Viewing Area (L x W)	77.00mm x 25.20mm
Voltage Supply	4.75V ~ 5.25V
Interface	USB
Operating Temperature	-40°C ~ 80°C
Text Color	Green
Background Color	Black
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the OK204-25-USB-OG-E is determined by strict equivalence across the following critical parameters:

Display Capacity & Format: 80 characters in 20 x 4 configuration
Character Resolution: 5 x 8 dot matrix
Display Technology: OLED
Physical Dimensions: 98.00mm x 60.00mm x 23.00mm (L x W x H)
Electrical Interface: USB communication protocol
Operating Voltage: 4.75V ~ 5.25V supply range
Operating Temperature Range: -40°C ~ 80°C
Dot Pitch & Character Size: 0.54mm W x 0.55mm H dot size; 4.75mm H x 2.90mm W character size

The OK204-25-USB-OY-E meets all these critical parameters. The primary difference is the text color specification (yellow versus green), which does not affect electrical compatibility, mechanical fit, or functional operation within the defined parameter set.

Parameter Comparison

Parameter	OK204-25-USB-OG-E	OK204-25-USB-OY-E	Match Status
Manufacturer	Matrix Orbital	Matrix Orbital	Identical
Number of Characters	80	80	Identical
Display Format	20 x 4	20 x 4	Identical
Character Format	5 x 8 Dots	5 x 8 Dots	Identical
Display Type	OLED	OLED	Identical
Character Size	4.75mm H x 2.90mm W	4.75mm H x 2.90mm W	Identical
Outline Dimensions (L x W x H)	98.00mm x 60.00mm x 23.00mm	98.00mm x 60.00mm x 23.00mm	Identical
Viewing Area (L x W)	77.00mm x 25.20mm	77.00mm x 25.20mm	Identical
Voltage Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	Identical
Dot Size	0.54mm W x 0.55mm H	0.54mm W x 0.55mm H	Identical
Interface	USB	USB	Identical
Operating Temperature	-40°C ~ 80°C	-40°C ~ 80°C	Identical
Background Color	Black	Black	Identical
Text Color	Green	Yellow	Different
Product Status	Obsolete	Active	Different
RoHS Status	Not specified	RoHS Compliant	Different

Engineering Selection Recommendations

The OK204-25-USB-OY-E is a direct functional equivalent to the obsolete OK204-25-USB-OG-E. Selection of the substitute part is justified on the following grounds:

Product Status: The OK204-25-USB-OY-E maintains active product status with current manufacturing support, whereas the original part is obsolete and subject to availability constraints.
Compliance: The substitute part carries RoHS Compliant certification, meeting modern regulatory requirements for electronic components.
Electrical & Mechanical Compatibility: All critical electrical parameters (voltage supply, operating temperature, interface protocol) and mechanical dimensions are identical, ensuring direct compatibility with existing circuit designs and mechanical assemblies.
Display Characteristics: The text color difference (yellow versus green) represents a visual distinction only and does not affect electrical operation, signal integrity, or functional performance within the defined operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the OK204-25-USB-OY-E be used as a direct replacement for the OK204-25-USB-OG-E?

A: Yes. The substitute part meets all critical electrical and mechanical parameters. The only difference is text color (yellow instead of green), which does not affect electrical compatibility or functional operation.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both parts share identical outline dimensions of 98.00mm x 60.00mm x 23.00mm (L x W x H) and identical viewing area dimensions of 77.00mm x 25.20mm (L x W). Direct mechanical substitution is supported.

Q: What is the significance of the product status difference?

A: The OK204-25-USB-OG-E is obsolete, meaning manufacturing has been discontinued and inventory is limited. The OK204-25-USB-OY-E is active, ensuring ongoing availability and manufacturing support for new designs and system maintenance.

Q: Does the RoHS compliance status affect compatibility?

A: No. RoHS compliance is a manufacturing and environmental standard that does not affect electrical or mechanical compatibility. The substitute part's RoHS Compliant status represents an improvement in regulatory alignment.

Q: Are the USB interface protocols identical?

A: Yes. Both parts use USB interface with identical electrical specifications and operating voltage ranges (4.75V ~ 5.25V), ensuring protocol compatibility without modification.

Q: What is the packaging difference between the two parts?

A: The OK204-25-USB-OG-E packaging is not specified in available data. The OK204-25-USB-OY-E is supplied in Bulk packaging. Confirm packaging requirements with your procurement specifications.

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