LTP-747HR Equivalent & Substitute Parts

Part Overview

The LTP-747HR is a 5 x 7 dot matrix display module manufactured by Lite-On Inc., featuring a common cathode row and common anode column configuration with red LED elements. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The module operates at a forward voltage of 2.1V with a brightness rating of 2mcd and is housed in a compact 0.50" L x 0.70" W x 0.25" H form factor.

Substiute Parts

LTP-747HR

Lite-On Inc.In Stock: 946LTP-747HR Datasheet

Current PartRFQ

LTP-747KR

Lite-On Inc.In Stock: 8048LTP-747KR Datasheet

DirectRFQ

TA07-11EWA

KingbrightIn Stock: 1576TA07-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTP-747HR are qualified based on the following critical parameters:

Configuration: All substitutes must maintain the 5 x 7 dot matrix arrangement to ensure pin-compatible operation and display functionality.

Internal Connection: The common cathode row and common anode column topology must be preserved to maintain circuit compatibility without redesign.

Color: Red LED elements are required to match the original optical output specification.

Size / Dimension: Physical dimensions must remain within the specified envelope (0.50" L x 0.70" W x 0.25" H) to ensure mechanical fit in existing PCB layouts and enclosures.

Voltage - Forward (Vf): Forward voltage must be compatible with existing driver circuits. Variations within 0.1V are acceptable for standard LED driver designs.

Moisture Sensitivity Level (MSL): MSL 1 rating ensures unlimited shelf life and storage compatibility.

Parameter Comparison

Engineering Selection Recommendations

LTP-747KR is the direct substitute from Lite-On Inc., maintaining identical mechanical dimensions and internal connection topology. This part is currently in active production status with higher brightness (3.4mcd) and lower forward voltage (2V), providing improved performance characteristics while maintaining full pin and functional compatibility. RoHS3 compliance ensures regulatory alignment for new designs.

TA07-11EWA is the manufacturer-recommended alternative from Kingbright, offering the highest brightness rating (8.2mcd) among available substitutes. Physical dimensions are within 0.04mm tolerance of the original specification. This part is actively produced and RoHS3 compliant with REACH unaffected status. The forward voltage of 2V is compatible with standard LED driver circuits designed for the original 2.1V specification.

Both substitute parts maintain the critical common cathode row and common anode column configuration, ensuring direct circuit compatibility without firmware or driver modifications.

Frequently Asked Questions (FAQ)

Q: Can LTP-747KR be used as a direct replacement for LTP-747HR without circuit modifications?

A: Yes. LTP-747KR maintains identical pin configuration, internal connection topology, and mechanical dimensions. The forward voltage difference (2V vs 2.1V) is within standard LED driver tolerance ranges and does not require circuit redesign.

Q: What is the brightness difference between the main part and substitutes?

A: LTP-747HR operates at 2mcd, LTP-747KR at 3.4mcd, and TA07-11EWA at 8.2mcd. Higher brightness may require current limiting adjustments in the driver circuit to maintain consistent display intensity in the application.

Q: Are there mechanical fit concerns with TA07-11EWA?

A: Physical dimensions of TA07-11EWA (12.70mm x 17.80mm x 6.30mm) differ by 0.04mm in length and width from the original specification (12.66mm x 17.74mm x 6.30mm). This tolerance is within standard PCB layout margins and does not affect mechanical fit in typical applications.

Q: Do substitute parts meet current regulatory requirements?

A: Both LTP-747KR and TA07-11EWA are RoHS3 compliant. TA07-11EWA additionally carries REACH unaffected status. The original LTP-747HR regulatory status is not specified in available documentation.

Q: What packaging is available for these substitute parts?

A: Both LTP-747KR and TA07-11EWA are supplied in tube packaging, consistent with standard dot matrix display module distribution.