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

Part Overview

The OK204-25-OG is a 20x4 character OLED display module manufactured by Matrix Orbital, featuring an 80-character capacity with 5x8 dot matrix formatting. This module supports multiple communication interfaces (I2C, RS-232, TTL) and operates within a 4.75V to 5.25V supply voltage range. The product is currently obsolete, making identification of active equivalent parts essential for ongoing system support and component procurement.

Substiute Parts

OK204-25-OG

Matrix OrbitalIn Stock: 1051OK204-25-OG Datasheet

Current PartRFQ

OK204-25-OY

Matrix OrbitalIn Stock: 1010OK204-25-OY Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OK204-25-OG is determined by strict equivalence across the following critical parameters:

• Display format and character capacity (20x4, 80 characters)
• Character matrix resolution (5x8 dots)
• Display technology (OLED)
• Physical dimensions (98.00mm x 60.00mm x 26.10mm)
• Communication interfaces (I2C, RS-232, TTL)
• Supply voltage range (4.75V ~ 5.25V)
• Operating temperature range (-20°C ~ 70°C)

The OK204-25-OY meets all mechanical and electrical compatibility requirements. The primary difference is product status (Active vs. Obsolete) and display color characteristics (Yellow text vs. Green text). Both variants maintain identical dimensional specifications, interface protocols, and electrical operating parameters.

Parameter Comparison

Engineering Selection Recommendations

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

For new designs or system replacements: The OK204-25-OY is the appropriate choice due to its Active product status and RoHS compliance certification. This ensures long-term availability and regulatory alignment.

For legacy system maintenance: The OK204-25-OG remains available in inventory (991 units) if exact color matching to the original Green text display is required. However, procurement should transition to the OK204-25-OY for future orders.

Color consideration: The primary functional difference is display color (Green vs. Yellow text). Both operate identically across all electrical and mechanical parameters. Display color selection should be based on application visibility requirements and user interface design specifications.

Frequently Asked Questions (FAQ)

Q: Are the OK204-25-OG and OK204-25-OY mechanically interchangeable?

A: Yes. Both modules share identical outline dimensions (98.00mm x 60.00mm x 26.10mm), mounting footprints, and connector specifications. Direct board-level substitution is supported without mechanical redesign.

Q: Do these modules support the same communication protocols?

A: Yes. Both the OK204-25-OG and OK204-25-OY implement identical interface support: I2C, RS-232, and TTL. Firmware and software integration remains unchanged during substitution.

Q: What is the impact of the display color difference?

A: The text color difference (Green vs. Yellow) is a visual characteristic only and does not affect electrical performance, data transmission, or operational parameters. Selection should be based on application visibility requirements and display contrast preferences in the target environment.

Q: Why is the OK204-25-OG listed as Obsolete?

A: The OK204-25-OG has been superseded by the OK204-25-OY in the manufacturer's active product line. The OK204-25-OY provides equivalent functionality with current RoHS compliance and ongoing manufacturing support.

Q: Can I use the OK204-25-OY as a direct replacement in existing systems?

A: Yes, provided the Yellow text display color is acceptable for your application. All electrical specifications, supply voltage requirements, operating temperature ranges, and interface protocols are identical. No firmware or hardware modifications are required.

Q: What is the supply voltage requirement for both modules?

A: Both modules operate within a 4.75V to 5.25V supply voltage range. Power supply design and regulation specifications remain unchanged between the two variants.