LTS-5501AB Equivalent & Substitute Parts

Part Overview

The LTS-5501AB is a blue 7-segment LED display module manufactured by Lite-On Inc., designed for single-character numeric and alphanumeric display applications. This component features a common anode configuration with a 0.56" digit height, operating at 3.8V forward voltage with a 20mA test current. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

LTS-5501AB

Lite-On Inc.In Stock: 741LTS-5501AB Datasheet

Current PartRFQ

LA-601BB

Rohm SemiconductorIn Stock: 975LA-601BB Datasheet

MFR RecommendedRFQ

XDCBD14A

SunLEDIn Stock: 4456XDCBD14A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTS-5501AB is determined by the following critical parameters:

• Display configuration: 7-segment, single character, blue color, common anode
• Package compatibility: 10-DIP form factor
• Electrical operating range: Forward voltage between 3.0V and 3.8V; test current between 10mA and 20mA
• Compliance: ROHS3 certification and MSL Level 1 rating

The identified substitute parts maintain these core functional and mechanical requirements, enabling direct replacement in circuit designs. Variations in digit height (0.56" to 0.58"), millicandela rating, wavelength peak, and power dissipation are within acceptable tolerances for equivalent 7-segment display applications.

Parameter Comparison

Engineering Selection Recommendations

XDCBD14A (SunLED) is the primary substitute for the LTS-5501AB. This part maintains identical digit height (0.56"), matching DIP package pitch (0.600", 15.24mm), and common anode configuration. The XDCBD14A carries active product status, ensuring long-term availability and supply chain continuity. All three components meet ROHS3 compliance and MSL Level 1 requirements.

LA-601BB (Rohm Semiconductor) serves as an alternative substitute with compatible electrical and mechanical specifications. However, the LA-601BB features a different DIP package pitch (0.400", 10.16mm) and slightly larger digit height (0.58"), requiring PCB layout verification before implementation. This part is classified as "Not For New Designs," limiting its suitability for new development projects.

For new designs and ongoing production, XDCBD14A is the recommended equivalent. For legacy system maintenance where component availability is critical, LA-601BB remains functionally compatible with appropriate circuit design adjustments.

Frequently Asked Questions (FAQ)

Q: Can the LA-601BB replace the LTS-5501AB directly without PCB modifications?

A: No. The LA-601BB uses a 10-DIP (0.400", 10.16mm) package pitch, while the LTS-5501AB uses 10-DIP (0.600", 15.24mm). PCB footprint redesign is required for mechanical compatibility.

Q: What is the primary advantage of XDCBD14A over the original LTS-5501AB?

A: The XDCBD14A maintains active product status with confirmed long-term availability. It shares identical digit height and DIP package pitch, enabling direct PCB compatibility. Lower forward voltage (3.0V vs. 3.8V) and reduced test current (10mA vs. 20mA) provide improved power efficiency.

Q: Are all three parts ROHS3 compliant?

A: Yes. The LTS-5501AB, LA-601BB, and XDCBD14A are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: How do wavelength differences affect display appearance?

A: The LTS-5501AB operates at 428nm (blue), while LA-601BB and XDCBD14A operate at 470nm and 468nm respectively (cyan-blue). These wavelength variations may produce slight color perception differences under identical lighting conditions.

Q: Which substitute offers the best brightness for low-light applications?

A: The LA-601BB provides the highest millicandela rating (56mcd) compared to LTS-5501AB (4.3mcd) and XDCBD14A (24mcd), offering superior brightness for visibility in low-ambient-light environments.

Q: Is the XDCBD14A suitable for new product designs?

A: Yes. The XDCBD14A carries active product status, making it the appropriate choice for new designs requiring long-term component availability and supply chain stability.