LTP-757HR LED Matrix 5x7 Equivalent & Substitute Parts

Part Overview

The LTP-757HR is a 5x7 dot matrix display module manufactured by Lite-On Inc., configured with common anode row and common cathode column architecture. This red LED matrix operates at a forward voltage of 2.1V with a brightness rating of 2mcd and physical dimensions of 0.50" L x 0.70" W x 0.25" H (12.70mm x 17.70mm x 6.30mm). The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

LTP-757HR

Lite-On Inc.In Stock: 938LTP-757HR Datasheet

Current PartRFQ

LTP-757KR

Lite-On Inc.In Stock: 8551LTP-757KR Datasheet

DirectRFQ

TC07-11EWA

KingbrightIn Stock: 2385TC07-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTP-757HR are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Configuration: 5 x 7 dot matrix (must match exactly)
• Internal Connection: Common Anode Row, Common Cathode Column (must match exactly)
• Color: Red (must match exactly)
• Voltage - Forward (Vf): Tolerance range 2.0V to 2.1V (acceptable variation for LED forward voltage)
• Physical Dimensions: Tolerance range ±0.04" (±1mm) in length and width, ±0.01" (±0.25mm) in height
• Moisture Sensitivity Level: MSL 1 or equivalent (unlimited moisture sensitivity)

Both substitute parts meet these criteria and maintain electrical and mechanical compatibility with the original LTP-757HR specification.

Parameter Comparison

Engineering Selection Recommendations

LTP-757KR is the direct substitute from Lite-On Inc., maintaining the same manufacturer lineage as the obsolete LTP-757HR. This part is active in production, ROHS3 compliant, and available in tube packaging. The forward voltage is reduced to 2.0V, and brightness is increased to 3.4mcd, representing a minor performance enhancement within acceptable LED matrix specifications.

TC07-11EWA is the manufacturer-recommended alternative from Kingbright. This part is active in production and ROHS3 compliant with REACH unaffected status. The forward voltage is 2.0V with significantly higher brightness at 8.2mcd. Physical dimensions remain within tolerance specifications. This option provides superior brightness performance for applications requiring enhanced visibility.

Both substitute parts are suitable for direct replacement based on matching configuration, internal connection architecture, color, and physical dimensions. Selection between LTP-757KR and TC07-11EWA depends on brightness requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can LTP-757KR and TC07-11EWA be used interchangeably with LTP-757HR?

A: Both parts are mechanically and electrically compatible with LTP-757HR. They share identical 5x7 configuration, common anode row/common cathode column architecture, red color, and physical dimensions within tolerance. Forward voltage differences (2.0V vs 2.1V) are within normal LED operating ranges. Brightness differences do not affect compatibility but may impact visual performance in the application.

Q: What is the significance of the brightness difference between the three parts?

A: LTP-757HR operates at 2mcd, LTP-757KR at 3.4mcd, and TC07-11EWA at 8.2mcd. These differences reflect LED manufacturing improvements and material variations. Higher brightness does not compromise compatibility but provides enhanced visibility. Applications with strict brightness specifications should verify performance requirements before selection.

Q: Are there packaging differences between the substitute parts?

A: LTP-757KR and TC07-11EWA are both supplied in tube packaging. The original LTP-757HR packaging specification is not provided in the technical data. Tube packaging is standard for dot matrix display modules and does not affect functional compatibility.

Q: What is the difference between ROHS3 compliance and REACH status?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances directive requirements. REACH status indicates whether the part is subject to European chemical registration requirements. LTP-757KR is ROHS3 compliant and REACH affected. TC07-11EWA is ROHS3 compliant and REACH unaffected. Both configurations are acceptable for most applications; regulatory requirements vary by end-use market.

Q: Why is LTP-757HR obsolete while substitutes remain active?

A: Product obsolescence reflects manufacturing discontinuation by Lite-On Inc. LTP-757KR and TC07-11EWA represent current production alternatives that meet or exceed the original specification. Active product status ensures ongoing availability and supply chain continuity for new designs and production support.