LCD Character Display Module 104990004 Equivalent & Substitute Parts

Part Overview

The Seeed Technology 104990004 is a 16x2 character LCD display module featuring a transmissive STN (Super-Twisted Nematic) display with blue LED backlight. This module provides 32 characters across a 5x8 dot matrix format with parallel 8-bit interface connectivity. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system integration and maintenance applications.

Substiute Parts

104990004

Seeed Technology Co., LtdIn Stock: 760104990004 Datasheet

Current PartRFQ

MOP-AL162A-BBTW-25J-3IN

Matrix OrbitalIn Stock: 2104MOP-AL162A-BBTW-25J-3IN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 104990004 LCD character display module is determined by strict alignment of core electrical and mechanical parameters. The following criteria establish functional equivalence:

Critical Substitution Parameters:

• Display format: 16 x 2 character configuration
• Character matrix: 5 x 8 dot structure
• Display mode: Transmissive operation
• Interface protocol: Parallel 8-bit communication
• Physical dimensions: 80.00mm x 36.00mm envelope (height tolerance ±1.80mm acceptable)
• Supply voltage range: Overlap within 4.7V to 5.3V specification
• Operating temperature: -20°C to 70°C minimum coverage
• Backlight technology: LED type

The Matrix Orbital MOP-AL162A-BBTW-25J-3IN qualifies as a functional substitute based on matching display format, character matrix, transmissive mode, parallel 8-bit interface, physical dimensions (80.00mm x 36.00mm x 14.00mm), supply voltage range (4.5V ~ 5.5V), and operating temperature specification (-20°C ~ 70°C). Backlight color differs (white versus blue); this represents a visual characteristic variation rather than functional incompatibility in applications where display illumination color is not a critical system requirement.

Parameter Comparison

Engineering Selection Recommendations

The Matrix Orbital MOP-AL162A-BBTW-25J-3IN serves as a direct functional substitute for the obsolete Seeed 104990004 based on matching electrical interface specifications, display format, and mechanical envelope compatibility. The substitute part maintains active product status with current manufacturing availability, ensuring supply chain continuity.

The MOP-AL162A-BBTW-25J-3IN carries ROHS3 compliance certification and REACH unaffected status, meeting contemporary environmental and regulatory requirements. These certifications provide assurance for applications subject to modern component sourcing standards.

Physical dimension compatibility is confirmed: the substitute height of 14.00mm represents a 1.80mm reduction from the original 15.80mm specification, remaining within typical PCB mounting tolerances for character display modules. Voltage supply range overlap (4.7V ~ 5.3V) ensures direct compatibility with existing power delivery circuits designed for the original part.

The backlight color difference (white versus blue) constitutes a visual characteristic variation. Selection of the white-backlight substitute is appropriate for applications where display illumination color is not a critical functional requirement. Applications requiring blue backlight illumination specifically should evaluate alternative substitutes or confirm color compatibility with system design parameters.

Frequently Asked Questions (FAQ)

Q: Can the MOP-AL162A-BBTW-25J-3IN directly replace the 104990004 in existing circuit designs?

A: Yes, the substitute part provides direct functional replacement. Both modules feature identical 16x2 display format, 5x8 character matrix, parallel 8-bit interface, and matching operating temperature range. Voltage supply ranges overlap within the 4.7V to 5.3V specification window. Physical dimensions are compatible with standard LCD module mounting footprints, with the substitute height 1.80mm shorter than the original.

Q: What is the significance of the backlight color difference?

A: The original 104990004 features blue LED backlight; the substitute MOP-AL162A-BBTW-25J-3IN provides white LED backlight. This represents a visual characteristic difference rather than functional incompatibility. Applications where display color is not a critical system parameter can proceed with the white-backlight substitute. Applications requiring blue backlight specifically should evaluate alternative part options.

Q: Are there compliance or regulatory differences between the original and substitute parts?

A: The substitute part carries ROHS3 compliance and REACH unaffected certification, meeting current environmental and regulatory standards. The original part's compliance status is not specified in available documentation. For applications subject to modern component sourcing requirements, the substitute part provides documented compliance assurance.

Q: What are the key parameters that determine substitution eligibility for this LCD module category?

A: Substitution eligibility is determined by: display format (16x2), character matrix (5x8 dots), display mode (transmissive), interface type (parallel 8-bit), physical envelope (80.00mm x 36.00mm), supply voltage range overlap, operating temperature coverage (-20°C to 70°C minimum), and LED backlight technology. All these parameters must align between original and substitute parts.

Q: Is the 1.80mm height difference between modules a concern for mechanical integration?

A: No. The 1.80mm height reduction of the substitute part (14.00mm versus 15.80mm) falls within standard mechanical tolerances for LCD module mounting. This difference does not affect PCB footprint compatibility or standard mounting bracket accommodation.

Q: What inventory status should be considered when selecting between original and substitute parts?

A: The original 104990004 is classified as obsolete with limited remaining inventory (728 units). The substitute MOP-AL162A-BBTW-25J-3IN maintains active product status with current manufacturing and significantly higher inventory availability (2031 units). For new designs and ongoing production requirements, the active substitute part ensures supply chain continuity.