104990024 8x8 Dot Matrix LED Display - Equivalent & Substitute Parts

Part Overview

The Seeed Technology 104990024 is an 8x8 dot matrix display module featuring a common anode row and common cathode column configuration with red LEDs. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. The module operates at 1.8V forward voltage with a 13mcd brightness rating and is housed in a compact 20.20mm x 20.20mm x 5.90mm package.

Substiute Parts

104990024

Seeed Technology Co., LtdIn Stock: 963104990024 Datasheet

Current PartRFQ

LTP-7188KE

Lite-On Inc.In Stock: 914LTP-7188KE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 104990024 are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Configuration: 8 x 8 matrix format
• Internal Connection: Common Anode Row, Common Cathode Column topology
• Color: Red LED
• Package Dimensions: Equivalent or compatible footprint (20mm nominal)
• Moisture Sensitivity Level: MSL 1 classification

The LTP-7188KE from Lite-On Inc. qualifies as a substitute part because it maintains identical matrix configuration, internal connection topology, and color specification. Both parts share MSL 1 moisture sensitivity classification and operate within compatible voltage and brightness parameters for typical dot matrix display applications.

Parameter Comparison

Engineering Selection Recommendations

The LTP-7188KE serves as an active substitute for the obsolete 104990024 based on matching matrix configuration, internal connection topology, and moisture sensitivity classification. The LTP-7188KE maintains product status as Active, ensuring continued availability and supply chain support.

Dimensional compatibility is confirmed within standard PCB layout tolerances, with both parts occupying approximately 20mm x 20mm footprints. The LTP-7188KE carries ROHS3 compliance certification, supporting modern manufacturing and environmental regulatory requirements.

Forward voltage differential (1.8V vs. 2.05V) and brightness rating variance (13mcd vs. 1.65mcd) are determined by LED die specifications and must be evaluated within the context of specific circuit design parameters and brightness requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the LTP-7188KE directly replace the 104990024 in existing designs?

A: The LTP-7188KE maintains identical matrix configuration and internal connection topology, enabling functional substitution in applications designed for 8x8 common anode/cathode dot matrix displays. Circuit design parameters including current limiting resistors and multiplexing timing must be verified for compatibility with the LTP-7188KE's 2.05V forward voltage specification.

Q: What is the significance of the forward voltage difference between these parts?

A: The 104990024 operates at 1.8V typical forward voltage, while the LTP-7188KE operates at 2.05V. This 0.25V differential affects LED current calculations and may require adjustment of series resistor values in the display driver circuit to maintain equivalent brightness and current characteristics.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts feature 20mm nominal package dimensions with minor variations (104990024: 20.20mm; LTP-7188KE: 20.00mm). These dimensions are within standard PCB layout tolerances for dot matrix display modules and support equivalent footprint placement.

Q: What does MSL 1 (Unlimited) moisture sensitivity classification mean?

A: MSL 1 classification indicates the component has unlimited shelf life under standard storage conditions and does not require special moisture control measures during handling, storage, or assembly processes.

Q: Why is the LTP-7188KE recommended despite lower brightness rating?

A: The LTP-7188KE is recommended based on product status (Active vs. Obsolete), supply chain availability, and regulatory compliance (ROHS3). Brightness requirements must be evaluated within specific application parameters; the 1.65mcd rating may be sufficient for many display applications where the 13mcd rating of the obsolete part is not a critical design constraint.