LTP-4323P 16-Segment Alphanumeric LED Display - Equivalent & Substitute Parts

Part Overview

The LTP-4323P is a 2-character, 16-segment alphanumeric LED display module manufactured by Lite-On Inc. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The display operates with common cathode configuration and is housed in a 20-DIP package suitable for through-hole PCB assembly.

Substiute Parts

LTP-4323P

Lite-On Inc.In Stock: 808LTP-4323P Datasheet

Current PartRFQ

LTP-4323JD

Lite-On Inc.In Stock: 781LTP-4323JD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTP-4323P is determined by strict equivalence across the following critical parameters:

• Number of characters: 2
• Display type: 16-segment alphanumeric
• Common pin configuration: Common cathode
• Color: Red
• Digit/alpha size: 0.39" (10.00mm)
• Physical dimensions: 0.630" H x 0.795" W x 0.276" D
• Package type: 20-DIP (0.500", 12.70mm)
• Forward voltage: 2.1V nominal
• Test current: 20mA
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

The LTP-4323JD meets all substitution criteria as a direct equivalent from the same manufacturer, sharing identical mechanical and electrical specifications within the allowed parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

The LTP-4323JD is the direct substitute for the obsolete LTP-4323P. Both parts maintain identical mechanical compatibility and core electrical specifications (2.1V forward voltage, 20mA test current, 20-DIP package). The LTP-4323JD is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts carry ROHS3 compliance and MSL Level 1 rating, meeting environmental and moisture sensitivity requirements for standard PCB assembly processes. The LTP-4323JD is available in tube packaging, facilitating automated assembly workflows.

Minor variations in millicandela rating (0.75mcd vs. 0.65mcd) and peak wavelength (697nm vs. 650nm) reflect normal manufacturing tolerances within the red LED spectrum and do not affect functional compatibility in standard alphanumeric display applications. The increased maximum power dissipation specification (70mW vs. 40mW) for the LTP-4323JD provides additional thermal margin.

Frequently Asked Questions (FAQ)

Q: Can the LTP-4323JD be used as a direct replacement for the LTP-4323P in existing designs?

A: Yes. The LTP-4323JD is mechanically and electrically compatible with the LTP-4323P. Both parts share identical package dimensions (20-DIP), pin configuration (common cathode), forward voltage (2.1V), and test current (20mA). No circuit modifications are required.

Q: What is the difference in brightness between the two parts?

A: The LTP-4323P has a millicandela rating of 0.75mcd at 697nm peak wavelength, while the LTP-4323JD has a rating of 0.65mcd at 650nm peak wavelength. Both operate within the red LED spectrum. The difference reflects normal manufacturing variation and does not impact functional performance in standard display applications.

Q: Are there packaging differences between these parts?

A: The LTP-4323P packaging specification is not detailed in the available data. The LTP-4323JD is supplied in tube packaging, which is standard for automated assembly processes and provides protection during handling and storage.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the LTP-4323P and LTP-4323JD are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, suitable for standard PCB assembly without special handling.

Q: Why is the LTP-4323P listed as obsolete?

A: The LTP-4323P is classified as obsolete by the manufacturer. The LTP-4323JD is the active equivalent part and is recommended for new designs and ongoing procurement to ensure supply chain continuity.