OK204-25-OR OLED Character Display Module - Equivalent & Substitute Parts

Part Overview

The OK204-25-OR is a 20x4 character OLED display module manufactured by Matrix Orbital, featuring an 80-character capacity with 5x8 dot matrix character format. The module supports multiple communication interfaces including I2C, RS-232, and TTL, with operating specifications of 4.75V to 5.25V supply voltage and -20°C to 70°C operating temperature range. The OK204-25-OR is classified as obsolete product status, making identification of active equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

OK204-25-OR

Matrix OrbitalIn Stock: 945OK204-25-OR Datasheet

Current PartRFQ

OK204-25-OW

Matrix OrbitalIn Stock: 1212OK204-25-OW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The OK204-25-OW serves as a direct substitute for the OK204-25-OR based on the following critical parameters that determine functional compatibility:

Matching Parameters (Substitution Basis):

• Display Format: 20 x 4 (identical character layout)
• Number of Characters: 80 (identical capacity)
• Character Format: 5 x 8 Dots (identical dot matrix structure)
• Display Type: OLED (identical technology)
• Character Size: 4.75mm H x 2.90mm W (identical dimensions)
• Outline Dimensions: 98.00mm x 60.00mm x 26.10mm (identical physical form factor)
• Viewing Area: 77.00mm x 25.20mm (identical active display area)
• Voltage - Supply: 4.75V ~ 5.25V (identical electrical specification)
• Interface: I2C, RS-232, TTL (identical communication protocols)
• Operating Temperature: -20°C ~ 70°C (identical thermal range)
• Dot Size: 0.54mm W x 0.55mm H (identical pixel dimensions)
• Moisture Sensitivity Level: 1 (Unlimited) (identical handling requirement)

Differentiating Parameter:

• Text Color: Red (OK204-25-OR) vs. White (OK204-25-OW)

The substitution is valid for applications where the text color change from red to white does not impact system requirements or user interface specifications.

Parameter Comparison

Engineering Selection Recommendations

The OK204-25-OW is the active equivalent for the obsolete OK204-25-OR. Selection between these parts should be based on the following criteria:

For New Designs: Use OK204-25-OW. This part carries active product status and RoHS compliance certification, meeting current regulatory and supply chain requirements.

For Legacy System Maintenance: The OK204-25-OW provides functional substitution with identical electrical, mechanical, and interface specifications. The primary design consideration is the text color change from red to white, which must be evaluated against application-specific display requirements and user interface specifications.

Compliance Consideration: The OK204-25-OW is RoHS compliant, whereas RoHS status for the OK204-25-OR is not specified. For applications subject to RoHS regulations, the OK204-25-OW is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the OK204-25-OW directly replace the OK204-25-OR in existing systems?

A: Yes, from an electrical and mechanical standpoint. The parts share identical display format (20x4), character capacity (80), OLED technology, supply voltage (4.75V ~ 5.25V), communication interfaces (I2C, RS-232, TTL), physical dimensions (98.00mm x 60.00mm x 26.10mm), and operating temperature range (-20°C ~ 70°C). The only difference is text color: red for OK204-25-OR versus white for OK204-25-OW. Substitution is valid if the color change does not conflict with system requirements.

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

A: The OK204-25-OR is classified as obsolete, indicating it is no longer manufactured or supported. The OK204-25-OW is active product status, meaning it is currently manufactured, stocked, and supported by Matrix Orbital. For new designs and ongoing supply assurance, the OK204-25-OW is the appropriate selection.

Q: Are there packaging differences between these parts?

A: The OK204-25-OR packaging is listed as "-" (not specified), while the OK204-25-OW is supplied in Bulk packaging. Both parts maintain identical physical form factor and interface specifications.

Q: Does the RoHS compliance status affect substitution?

A: The OK204-25-OW is RoHS compliant, while the OK204-25-OR RoHS status is not specified. For applications subject to RoHS regulations or customer requirements, the OK204-25-OW meets compliance requirements. This is an additional advantage of the substitute part.

Q: Are the viewing areas and dot sizes identical?

A: Yes. Both parts have identical viewing area dimensions (77.00mm L x 25.20mm W) and dot size (0.54mm W x 0.55mm H), ensuring identical visual presentation and readability characteristics.