LTP-2157AE Equivalent & Substitute Parts

Part Overview

The LTP-2157AE is a 5 x 7 dot matrix display module manufactured by Lite-On Inc., featuring a common anode row and common cathode column configuration with orange LED color output. This module is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

The LTP-2157AE operates at a forward voltage of 2.1V with a brightness rating of 4mcd and is housed in a compact 1.50" L x 2.09" W x 0.34" H form factor (38.10mm x 53.10mm x 8.60mm). The module maintains unlimited moisture sensitivity level (MSL 1) and is classified under ECCN EAR99 and HTSUS 8541.41.0000.

Substiute Parts

LTP-2157AE

Lite-On Inc.In Stock: 1007LTP-2157AE Datasheet

Current PartRFQ

LTP-2157AKA

Lite-On Inc.In Stock: 1112LTP-2157AKA Datasheet

MFR RecommendedRFQ

TC20-11EWA

KingbrightIn Stock: 694TC20-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTP-2157AE are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Configuration: 5 x 7 dot matrix layout
• Internal Connection: Common Anode Row, Common Cathode Column topology
• Physical Dimensions: Matching or compatible form factor (1.50" L x 2.09" W x 0.33"-0.34" H)
• Voltage - Forward (Vf): Operating range 2.0V to 2.1V
• Moisture Sensitivity Level: MSL 1 classification

Secondary Compatibility Factors:

• Color: Orange, Orange-Red, or Red variants acceptable for applications where spectral shift is tolerable
• Millicandela Rating: 4mcd to 10mcd range maintains functional brightness compatibility
• Compliance: RoHS3 compliance preferred for active product status

The LTP-2157AKA and TC20-11EWA both satisfy the primary substitution criteria through identical configuration, connection topology, and compatible physical dimensions. Variations in color and brightness are secondary parameters that may require application-level validation.

Parameter Comparison

Engineering Selection Recommendations

LTP-2157AKA (Lite-On Inc.): This part is the manufacturer-recommended substitute, maintaining identical physical dimensions and internal connection topology. The LTP-2157AKA operates at 2.05V forward voltage with 4.6mcd brightness and features orange-red color output. Active product status and ROHS3 compliance ensure long-term availability and regulatory alignment. The minimal voltage differential (0.05V) and comparable brightness rating (4.6mcd vs. 4mcd) support direct substitution in most applications.

TC20-11EWA (Kingbright): This alternative provides a 5 x 7 common anode/cathode configuration with compatible physical dimensions and MSL 1 rating. The TC20-11EWA operates at 2V forward voltage with 10mcd brightness and red color output. Active product status and ROHS3 compliance are confirmed. The increased brightness (10mcd) and lower forward voltage (2V) may require circuit-level validation in current-limiting designs. Physical height variation (0.33" vs. 0.34") is negligible for most mechanical assemblies.

Both substitute parts maintain compliance certifications (ECCN EAR99, HTSUS 8541.41.0000) consistent with the original LTP-2157AE.

Frequently Asked Questions (FAQ)

Q: Can the LTP-2157AKA directly replace the LTP-2157AE without circuit modification?

A: The LTP-2157AKA maintains identical physical dimensions, internal connection topology, and compatible electrical parameters (2.05V vs. 2.1V forward voltage). Direct substitution is supported for applications where orange-red color output is acceptable. Verify color specification requirements in your application before implementation.

Q: What is the primary difference between the LTP-2157AKA and TC20-11EWA?

A: Both parts share the 5 x 7 common anode/cathode configuration and compatible form factor. The LTP-2157AKA is a Lite-On product with orange-red output and 4.6mcd brightness. The TC20-11EWA is a Kingbright product with red output and 10mcd brightness. The TC20-11EWA's higher brightness may require current-limiting circuit adjustment.

Q: Are there packaging or moisture sensitivity differences between these parts?

A: All three parts (LTP-2157AE, LTP-2157AKA, TC20-11EWA) are classified as MSL 1 (Unlimited) with identical moisture sensitivity handling requirements. Physical dimensions are compatible across all three parts, with negligible height variation (0.33"-0.34") that does not affect standard PCB assembly.

Q: Which substitute part is recommended for new designs?

A: Selection depends on color and brightness requirements. For orange output matching the original specification, use LTP-2157AKA. For higher brightness applications accepting red color output, use TC20-11EWA. Both parts carry active product status and ROHS3 compliance, supporting long-term design viability.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts maintain ECCN EAR99 and HTSUS 8541.41.0000 classification consistent with the original LTP-2157AE. The LTP-2157AKA and TC20-11EWA both carry ROHS3 compliance certification, supporting regulatory requirements in restricted substance applications.