LTS-4801B 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The LTS-4801B is a single-character, 7-segment blue LED display module manufactured by LITEON. It features a common anode configuration with a 0.39" digit height, designed for numeric and character display applications. The device operates at 3.8V forward voltage with a 20mA test current and delivers 3.6mcd brightness output.

This part is classified as obsolete. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this display module.

Substiute Parts

LTS-4801B

LITEONIn Stock: 1092LTS-4801B Datasheet

Current PartRFQ

SMA391LB G/W

American Opto Plus LEDIn Stock: 989SMA391LB G/W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTS-4801B is determined by the following critical parameters:

• Display Configuration: Single character, 7-segment, common anode topology
• Digit Height: 0.39" (10.00mm) nominal dimension
• Color: Blue wavelength output
• Electrical Compatibility: Forward voltage and test current ratings within acceptable operating ranges
• Packaging: Physical form factor and pin configuration must accommodate board-level integration

The SMA391LB G/W qualifies as a substitute based on matching all primary functional parameters: single-character 7-segment common anode blue display with 0.39" digit height. Both devices operate at compatible voltage and current specifications and maintain ROHS3 compliance. The primary distinction is packaging format: the LTS-4801B uses 10-DIP through-hole configuration, while the SMA391LB G/W employs 10-SMD surface-mount technology.

Parameter Comparison

Engineering Selection Recommendations

The SMA391LB G/W is an active-status substitute for the obsolete LTS-4801B. Both components maintain ROHS3 compliance and satisfy the core functional requirements of single-character, 7-segment, common anode blue display operation.

Selection between these parts depends on board-level integration requirements:

• Through-hole applications: The LTS-4801B 10-DIP package is suitable for breadboard prototyping, legacy PCB designs, or applications requiring manual insertion assembly. Availability is limited due to obsolete status.

• Surface-mount applications: The SMA391LB G/W 10-SMD package is appropriate for modern PCB designs utilizing automated assembly processes. Active product status ensures ongoing supply chain availability.

Both devices are electrically compatible within standard LED display circuit designs. The SMA391LB G/W exhibits higher brightness output (40mcd vs. 3.6mcd) and operates at lower forward voltage (3.2V vs. 3.8V), resulting in reduced power dissipation per segment. These characteristics may require minor circuit adjustments in current-limiting resistor values to maintain equivalent brightness levels or power consumption profiles.

Frequently Asked Questions (FAQ)

Q: Can the SMA391LB G/W directly replace the LTS-4801B in an existing PCB design?

A: Functional substitution is possible if the PCB accommodates SMD footprints. The 10-SMD package differs from the 10-DIP through-hole configuration, requiring PCB redesign. Electrical operation is compatible with standard common anode display driver circuits.

Q: What are the key differences between these two parts?

A: The primary differences are packaging format (DIP through-hole vs. SMD surface-mount), brightness output (3.6mcd vs. 40mcd), forward voltage (3.8V vs. 3.2V), and product status (obsolete vs. active). Both maintain identical digit height, display type, and common anode configuration.

Q: Does the higher brightness of the SMA391LB G/W affect circuit design?

A: The increased brightness (40mcd vs. 3.6mcd) and lower forward voltage (3.2V vs. 3.8V) may require adjustment of current-limiting resistor values to achieve equivalent visual output or maintain consistent power consumption. Circuit redesign is recommended to optimize performance for the substitute component.

Q: Are both parts RoHS compliant?

A: Yes. Both the LTS-4801B and SMA391LB G/W are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and assembly.

Q: What is the moisture sensitivity difference between these parts?

A: The LTS-4801B carries MSL 1 (unlimited moisture exposure tolerance), while the SMA391LB G/W carries MSL 2A (4-week moisture exposure tolerance). The substitute part requires controlled storage and handling conditions during manufacturing and assembly processes.