LTP-22357E Equivalent & Substitute Parts

Part Overview

The LTP-22357E 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-red color output. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The module operates at a forward voltage of 2.6V with a brightness rating of 4.8mcd and physical dimensions of 2.37" L x 1.69" W x 0.34" H (60.10mm x 42.85mm x 8.60mm).

Substiute Parts

LTP-22357E

Lite-On Inc.In Stock: 851LTP-22357E Datasheet

Current PartRFQ

LTP-2157AKA

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTP-22357E is based on the following critical parameters that must remain consistent:

• Configuration: 5 x 7 dot matrix array
• Internal Connection: Common Anode Row, Common Cathode Column topology
• Color: Orange-Red light output
• Functional Category: Dot matrix display module

The LTP-2157AKA qualifies as a manufacturer-recommended substitute because it maintains identical configuration, connection topology, and color specification. While physical dimensions and forward voltage differ slightly, these variations remain within acceptable tolerances for equivalent functional performance in the dot matrix display category.

Parameter Comparison

Engineering Selection Recommendations

The LTP-2157AKA is the manufacturer-recommended substitute for the obsolete LTP-22357E. Both components share identical electrical configuration (5 x 7 common anode row, common cathode column) and color specification (orange-red), ensuring functional compatibility at the circuit interface level.

The LTP-2157AKA carries active product status and ROHS3 compliance, providing advantages for new designs and regulatory adherence. The forward voltage differential (2.05V versus 2.6V) and brightness variation (4.6mcd versus 4.8mcd) are minor and fall within the operational tolerance band for dot matrix display applications. Physical dimension differences require PCB layout adjustment but do not affect electrical substitution viability.

Frequently Asked Questions (FAQ)

Q: Can the LTP-2157AKA be used as a direct pin-for-pin replacement for the LTP-22357E?

A: Yes. Both components feature identical common anode row and common cathode column internal connection topology, ensuring electrical compatibility. Physical dimensions differ, requiring PCB footprint modification.

Q: What is the significance of the forward voltage difference between the two parts?

A: The LTP-22357E operates at 2.6V while the LTP-2157AKA operates at 2.05V. This 0.55V reduction may require adjustment to current-limiting resistor values in the display driver circuit to maintain consistent brightness output.

Q: Are there any compliance or regulatory differences between these parts?

A: The LTP-2157AKA is ROHS3 compliant with MSL rating of 1 (Unlimited), whereas the LTP-22357E carries obsolete status with no specified compliance data. The LTP-2157AKA is suitable for applications requiring modern regulatory adherence.

Q: How do the brightness ratings compare?

A: The LTP-22357E is rated at 4.8mcd while the LTP-2157AKA is rated at 4.6mcd. This 0.2mcd difference represents a 4.2% reduction in brightness and is negligible for most display applications.

Q: What packaging considerations apply to substitution?

A: Both components share identical height (0.34" / 8.60mm). The LTP-2157AKA has different length and width dimensions (1.50" L x 2.09" W versus 2.37" L x 1.69" W), requiring PCB layout redesign to accommodate the new footprint.