LTS-546AE 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LTS-546AE is a single-character 7-segment LED display module manufactured by Lite-On Inc. This common anode display operates at 2V forward voltage with a 20mA test current and features an orange-red color output at 630nm peak wavelength. The component is housed in a 10-DIP package measuring 0.600" (15.24mm) and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). The product maintains active status in the market. Equivalent substitute parts may be required due to inventory availability, regional sourcing constraints, or specific application requirements where alternative color or brightness specifications are acceptable within the electrical and mechanical parameters.

Substiute Parts

LTS-546AE

Lite-On Inc.In Stock: 1195LTS-546AE Datasheet

Current PartRFQ

SA52-11EWA

KingbrightIn Stock: 2998SA52-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTS-546AE is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Display Type: 7-Segment configuration
• Number of Characters: Single character (1)
• Common Pin Configuration: Common Anode
• Digit/Alpha Size: 0.52" (13.21mm)
• Voltage - Forward (Vf) Typical: 2V
• Current - Test: 20mA
• Package / Case: 10-DIP (0.600", 15.24mm)
• Power Dissipation (Max): 75mW

Parameters Allowed to Vary:

• Color (Orange-Red, Red, or other visible spectrum wavelengths)
• Millicandela Rating (brightness intensity)
• Wavelength - Peak (within visible LED spectrum)
• Manufacturer (different OEM suppliers)

The SA52-11EWA from Kingbright meets all critical substitution criteria. It maintains identical electrical specifications (2V forward voltage, 20mA test current, 75mW maximum power dissipation), mechanical compatibility (10-DIP package, 0.52" digit size), and functional configuration (common anode, 7-segment, single character). The substitute differs only in color specification (Red vs. Orange-Red) and brightness rating (6.4mcd vs. 2.2mcd), which are allowable variations for equivalent component selection.

Parameter Comparison

Engineering Selection Recommendations

Both the LTS-546AE and SA52-11EWA maintain active product status and full ROHS3 compliance with MSL 1 rating, indicating equivalent environmental and regulatory qualification. Selection between these components should be based on application-specific requirements:

The LTS-546AE is the primary specification component and should be selected when orange-red color output at 630nm wavelength and 2.2mcd brightness are required by circuit design or visual interface specifications.

The SA52-11EWA serves as a direct electrical and mechanical substitute when the application permits red color output (627nm wavelength) and can accommodate higher brightness output (6.4mcd). The increased millicandela rating of the SA52-11EWA may require circuit-level current limiting adjustments to maintain equivalent perceived brightness or to prevent over-illumination in the application context.

Both components are suitable for applications requiring common anode 7-segment single-character display functionality in 10-DIP package form factor with 2V forward voltage operation.

Frequently Asked Questions (FAQ)

Q: Can SA52-11EWA replace LTS-546AE in any application?

A: SA52-11EWA is electrically and mechanically compatible as a substitute. Both components share identical voltage (2V), current (20mA), power dissipation (75mW), package configuration (10-DIP), and digit size (0.52"). The primary difference is color specification and brightness. Applications requiring specific orange-red color output at 630nm or brightness-critical designs may require evaluation of the SA52-11EWA's higher 6.4mcd output against circuit design parameters.

Q: Are there pin-to-pin compatibility concerns between these parts?

A: Both components use 10-DIP package configuration with common anode architecture. Pin assignments for 7-segment displays in this package class are standardized. Direct pin-to-pin substitution is supported without PCB modification.

Q: What is the impact of the brightness difference between these parts?

A: The SA52-11EWA provides 6.4mcd output compared to the LTS-546AE's 2.2mcd. This represents approximately 2.9x higher brightness. Applications with fixed series resistor values may require current limiting circuit adjustment to prevent over-illumination or to maintain design-specified brightness levels.

Q: Do both parts meet the same compliance and environmental standards?

A: Both LTS-546AE and SA52-11EWA are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity rating). Both maintain active product status. Environmental and regulatory qualification is equivalent between the two components.

Q: What is the wavelength difference between orange-red and red output?

A: The LTS-546AE operates at 630nm (orange-red spectrum), while the SA52-11EWA operates at 627nm (red spectrum). This 3nm difference represents a minor shift within the visible red spectrum. Visual distinction between these wavelengths may be minimal in typical display applications.