LTP-1457AY Equivalent & Substitute Parts

Part Overview

The LTP-1457AY is a 5 x 7 dot matrix display module manufactured by LITEON, featuring a yellow LED configuration with common cathode row and common anode column internal connections. 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 2.1V with a brightness rating of 3mcd and is housed in a compact form factor measuring 0.89" L x 1.25" W x 0.32" H.

Substiute Parts

LTP-1457AY

LITEONIn Stock: 1193LTP-1457AY Datasheet

Current PartRFQ

LTP-1457AKY

Lite-On Inc.In Stock: 858LTP-1457AKY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTP-1457AY is determined by the following critical parameters:

• Configuration: 5 x 7 matrix structure
• Internal Connection: Common Cathode Row, Common Anode Column topology
• Base Product Number: LTP-1457 family designation
• Physical Dimensions: Compatible form factor within tolerance
• Voltage Range: Forward voltage within operational specification
• Millicandela Rating: Brightness level suitable for application requirements

The LTP-1457AKY qualifies as a substitute based on matching configuration, internal connection topology, base product family, and physical dimensions. Both parts share the LTP-1457 base product number and maintain compatible electrical characteristics within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

The LTP-1457AKY is an active product offering from Lite-On Inc. and serves as the primary substitute for the obsolete LTP-1457AY. Both components share identical matrix configuration, internal connection topology, and moisture sensitivity classification. The LTP-1457AKY maintains forward voltage within 0.05V of the original specification and provides increased brightness at 3.8mcd compared to 3mcd. Physical dimensions are compatible with negligible variation (0.01" difference in length). The substitute part carries RoHS3 compliance certification, supporting modern manufacturing and environmental standards. Selection of the LTP-1457AKY is appropriate for applications requiring direct replacement of the LTP-1457AY with active product support and current availability.

Frequently Asked Questions (FAQ)

Q: Can the LTP-1457AKY directly replace the LTP-1457AY in existing designs?

A: Yes. Both parts maintain identical 5 x 7 matrix configuration, common cathode row and common anode column internal connections, and compatible physical dimensions. The forward voltage difference of 0.05V and increased brightness rating do not preclude direct substitution in standard applications.

Q: What is the significance of the color difference between Yellow and Amber-Yellow?

A: The LTP-1457AY produces yellow light output, while the LTP-1457AKY produces amber-yellow output. Color perception differences may be visible in side-by-side comparison. Application requirements for specific color characteristics should be evaluated before substitution.

Q: Are there dimensional compatibility concerns?

A: Physical dimensions are compatible. The LTP-1457AKY measures 0.90" L x 1.25" W x 0.32" H compared to the LTP-1457AY at 0.89" L x 1.25" W x 0.32" H. The 0.01" length difference is within standard mechanical tolerance for PCB mounting and housing applications.

Q: What is the impact of the forward voltage difference?

A: The LTP-1457AKY operates at 2.05V typical forward voltage versus 2.1V for the LTP-1457AY. This 0.05V difference is within normal operating tolerance and does not require circuit redesign for standard current-limiting resistor configurations.

Q: Does the LTP-1457AKY offer improved performance?

A: The LTP-1457AKY provides increased brightness at 3.8mcd compared to 3mcd for the LTP-1457AY. This represents a measurable improvement in light output intensity while maintaining all other electrical and mechanical specifications.

Q: What certifications apply to the substitute part?

A: The LTP-1457AKY carries RoHS3 compliance certification and maintains MSL 1 (Unlimited) moisture sensitivity rating, consistent with the original part's environmental classification.