LTD-432EC Equivalent & Substitute Parts

Part Overview

The LTD-432EC is a 2-character 7-segment LED display module manufactured by Lite-On Inc. in orange-red color with common cathode configuration. This component is classified as an active product and is designed for numeric and alphanumeric display applications requiring standard DIP packaging. The need for equivalent parts arises from inventory availability, supply chain considerations, or specific application requirements where alternative display modules with compatible electrical and mechanical specifications are necessary.

Substiute Parts

LTD-432EC

Lite-On Inc.In Stock: 819LTD-432EC Datasheet

Current PartRFQ

DC04-11EWA

KingbrightIn Stock: 1072DC04-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTD-432EC is determined by strict alignment of the following critical parameters:

• Display Configuration: 2-character, 7-segment format with common cathode topology
• Electrical Specifications: Forward voltage of 2V and test current of 20mA
• Package Type: 16-DIP (0.500", 12.70mm) form factor for direct PCB compatibility
• Mechanical Compatibility: Physical dimensions and digit size within acceptable tolerance ranges
• Regulatory Compliance: ROHS3 compliance and active product status

The substitute part DC04-11EWA from Kingbright meets these core substitution criteria. While color differs (red versus orange-red) and wavelength peak varies slightly (627nm versus 630nm), the electrical performance, package configuration, and functional characteristics remain equivalent for standard display applications.

Parameter Comparison

Engineering Selection Recommendations

Both the LTD-432EC and DC04-11EWA are active products with ROHS3 compliance, ensuring regulatory alignment for current manufacturing standards. The DC04-11EWA serves as a direct functional equivalent based on matching electrical specifications (2V forward voltage, 20mA test current), identical package configuration (16-DIP), and common cathode topology.

Selection between these parts should be based on application-specific requirements regarding color perception and brightness. The DC04-11EWA exhibits higher luminous intensity (6.4mcd versus 1.3mcd), making it suitable for applications requiring greater visibility. The color difference (red versus orange-red) and minor digit size variation (0.39" versus 0.40") are within acceptable ranges for standard numeric display applications where exact color matching is not critical.

Frequently Asked Questions (FAQ)

Q: Can DC04-11EWA replace LTD-432EC in existing designs without circuit modification?

A: Yes. Both parts share identical electrical specifications (2V forward voltage, 20mA test current) and package configuration (16-DIP). No circuit redesign is required. Direct pin-for-pin substitution is possible.

Q: What is the significance of the color difference between orange-red and red?

A: Color difference reflects different wavelength peaks (630nm versus 627nm). In applications where color consistency with surrounding indicators is critical, this distinction may be relevant. For standard numeric display functions, this difference does not affect electrical performance or compatibility.

Q: How do the brightness ratings compare?

A: The DC04-11EWA has a higher millicandela rating (6.4mcd) compared to the LTD-432EC (1.3mcd). This indicates greater luminous intensity. Selection should be based on visibility requirements in the target application environment.

Q: Are both parts suitable for new designs?

A: Yes. Both parts maintain active product status and ROHS3 compliance, confirming suitability for current manufacturing and regulatory requirements.

Q: What is the impact of the 0.01" digit size difference?

A: The digit size difference (0.40" versus 0.39") is minimal and typically within acceptable tolerance for standard display applications. Visual perception difference is negligible in most use cases.