LTP-2057AY Equivalent & Substitute Parts

Part Overview

The LTP-2057AY is a 5 x 7 dot matrix display module manufactured by Lite-On Inc., configured with common cathode rows and common anode columns. The device features yellow LED elements with a forward voltage of 2.1V and a brightness rating of 4.8mcd. With physical dimensions of 1.50" L x 2.09" W x 0.34" H (38.10mm x 53.10mm x 8.60mm), this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing system support, maintenance, and new design implementations requiring this display configuration.

Substiute Parts

LTP-2057AY

Lite-On Inc.In Stock: 1142LTP-2057AY Datasheet

Current PartRFQ

TA20-11YWA

KingbrightIn Stock: 1050TA20-11YWA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTP-2057AY is determined by strict adherence to the following parameters:

• Configuration: Must be 5 x 7 dot matrix format
• Internal Connection: Must maintain common cathode row, common anode column topology
• Color: Must be yellow (590nm wavelength range)
• Voltage - Forward (Vf): Must be 2.1V typical
• Physical Dimensions: Must be compatible within the specified envelope (1.50" L x 2.09" W x 0.34" H or equivalent metric dimensions)
• Moisture Sensitivity Level: Must be MSL 1 or equivalent

The TA20-11YWA from Kingbright meets all substitution criteria. Variations in millicandela rating (brightness) and product status do not disqualify a part from functional equivalence when all electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The TA20-11YWA is a direct functional equivalent to the LTP-2057AY. Both components share identical electrical specifications (2.1V forward voltage, 5 x 7 configuration, common cathode row/common anode column topology) and equivalent mechanical envelopes. The TA20-11YWA maintains active product status with RoHS3 compliance and REACH unaffected designation, providing supply chain continuity and regulatory alignment for applications requiring this display module type.

The minor dimensional variance (0.34" vs. 0.33" height; 8.60mm vs. 8.50mm) falls within standard mechanical tolerance ranges and does not impact functional compatibility in standard mounting applications. The increased brightness rating of the TA20-11YWA (9mcd vs. 4.8mcd) represents an enhancement that maintains backward compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the TA20-11YWA directly replace the LTP-2057AY in existing designs?

A: Yes. Both components share identical electrical specifications (2.1V forward voltage, 5 x 7 configuration, common cathode row/common anode column connection). The mechanical envelope difference (0.1mm height variance) is within standard tolerance and does not affect standard mounting applications.

Q: What is the significance of the millicandela rating difference?

A: The TA20-11YWA provides 9mcd brightness compared to the LTP-2057AY's 4.8mcd. This represents increased light output while maintaining identical electrical drive requirements. Existing circuit designs require no modification.

Q: Are there compliance or supply chain advantages to using the TA20-11YWA?

A: The TA20-11YWA carries active product status, RoHS3 compliance, and REACH unaffected designation. The LTP-2057AY is obsolete. The Kingbright part ensures ongoing availability and regulatory alignment for new production and maintenance applications.

Q: Do the physical dimensions require design modifications?

A: The dimensional difference is 0.1mm in height (8.60mm vs. 8.50mm) and 0mm in length and width. This variance is within standard mechanical tolerance and does not require PCB or enclosure modifications for typical applications.

Q: What parameters must match for substitution eligibility?

A: Configuration (5 x 7), internal connection topology (common cathode row/common anode column), color (yellow), forward voltage (2.1V), and moisture sensitivity level (MSL 1) must remain constant. Brightness rating and product status do not affect functional compatibility.