104990123 - 14-Segment Alphanumeric LED Display Module

Part Overview

The 104990123 is a 2-character, 14-segment alphanumeric LED display module manufactured by Seeed Technology Co., Ltd. This component features a yellow-green light-emitting display with common anode configuration, designed for alphanumeric character representation in electronic applications. The display operates at 2.2V forward voltage with a 20mA test current and provides 0.54-inch character size in an 18-DIP package format.

The product status is listed as Obsolete, making substitute part identification necessary for ongoing design requirements, production continuity, and system maintenance. Identifying functionally equivalent alternatives ensures component availability and design flexibility.

Substiute Parts

104990123

Seeed Technology Co., LtdIn Stock: 1136104990123 Datasheet

Current PartRFQ

ELD-525SYGWA/S530-E2

Everlight Electronics Co LtdIn Stock: 736ELD-525SYGWA/S530-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 104990123 is determined by the following critical parameters:

Primary Matching Criteria:

• Display Type: 14-Segment, Alphanumeric configuration
• Number of Characters: 2-character display
• Character Size: 0.54" (13.72mm) digit/alpha size
• Color: Yellow-Green light emission
• Package / Case: 18-DIP (0.600", 15.24mm) footprint compatibility

Secondary Compatibility Parameters:

• Voltage - Forward (Vf): Operating voltage range tolerance
• Current - Test: 20mA test current specification
• Common Pin Configuration: Common Anode or Common Cathode (circuit design dependent)
• Wavelength - Peak: Yellow-Green spectrum (571nm reference)

The substitute part ELD-525SYGWA/S530-E2 matches the primary criteria of 14-segment alphanumeric display type, 2-character configuration, 0.54-inch character size, yellow-green color, and 18-DIP package format. Secondary parameters show minor variations in forward voltage (2V vs 2.2V), millicandela rating (4.5mcd vs 18mcd), and common pin configuration (Common Cathode vs Common Anode), which require circuit-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ELD-525SYGWA/S530-E2 substitute part is currently in Active product status, providing design continuity for applications requiring 14-segment alphanumeric display functionality. The substitute meets the primary mechanical and functional specifications: 2-character display, 0.54-inch character size, yellow-green color, and 18-DIP package footprint.

Key considerations for selection:

Common Pin Configuration Difference: The substitute part uses Common Cathode configuration versus the original Common Anode design. This requires circuit redesign at the driver interface level. The electrical characteristics remain compatible within standard LED display driver specifications.

Brightness Differential: The original part specifies 18mcd brightness rating, while the substitute provides 4.5mcd. Applications requiring specific brightness levels must evaluate this 4-fold reduction against visibility requirements and ambient lighting conditions.

Forward Voltage Tolerance: The substitute operates at 2V versus the original 2.2V specification. This 0.2V difference falls within typical LED driver tolerance ranges and does not present compatibility issues for standard circuit implementations.

Compliance Status: The substitute part carries ROHS3 compliance certification, supporting regulatory requirements for electronics manufacturing and environmental standards.

Wavelength Specification: Peak wavelength differs by 4nm (575nm vs 571nm), remaining within the yellow-green spectrum and presenting no functional differentiation for human perception or standard optical applications.

Frequently Asked Questions (FAQ)

Q: Can the ELD-525SYGWA/S530-E2 directly replace the 104990123 without circuit modifications?

A: The substitute part shares identical mechanical footprint (18-DIP package) and primary display specifications (2-character, 14-segment, 0.54-inch, yellow-green). However, the common pin configuration differs (Common Cathode vs Common Anode), requiring driver circuit redesign. Direct socket substitution without circuit modification is not possible.

Q: What is the impact of the 4.5mcd brightness rating on the substitute part compared to the original 18mcd?

A: The substitute provides one-quarter the brightness of the original part. Applications in high ambient light environments or requiring maximum visibility may experience reduced display clarity. Low-light or controlled-environment applications typically accommodate this brightness level without performance degradation.

Q: Are the forward voltage differences (2V vs 2.2V) significant for circuit design?

A: The 0.2V difference is within standard LED driver tolerance specifications. Most current-limiting resistor designs and power supply circuits accommodate this variation without modification. Verify specific driver IC specifications for voltage headroom requirements.

Q: Does the 18-DIP package footprint remain identical between both parts?

A: Both parts use 18-DIP (0.600", 15.24mm) package format with compatible PCB footprints. Physical board-level placement and soldering procedures remain unchanged. Pin count and spacing are equivalent.

Q: What is the significance of ROHS3 compliance on the substitute part?

A: ROHS3 compliance indicates the substitute part meets Restriction of Hazardous Substances Directive requirements, supporting regulatory compliance for electronics manufacturing in regulated markets. The original part status does not specify compliance certification.

Q: How do the wavelength specifications (571nm vs 575nm) affect display appearance?

A: Both wavelengths fall within the yellow-green spectrum. The 4nm difference is imperceptible to human vision and produces no functional differentiation in display appearance or color matching for multi-display applications.

Q: Is the substitute part suitable for new design implementations?

A: The ELD-525SYGWA/S530-E2 carries Active product status, indicating current manufacturing availability and long-term supply continuity. This part is suitable for new designs requiring 14-segment alphanumeric display functionality with the specified electrical and mechanical parameters.