SSL-LX2573YD Yellow LED Equivalent & Substitute Parts

Part Overview

The SSL-LX2573YD is an active yellow LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This diffused rectangular LED operates at 2.1V forward voltage with a 10mcd brightness rating and 110° viewing angle. The component is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across different manufacturers while accommodating application-specific tolerance variations.

Substiute Parts

SSL-LX2573YD

Lumex Opto/Components Inc.In Stock: 931SSL-LX2573YD Datasheet

Current PartRFQ

LTL-433Y

Lite-On Inc.In Stock: 761LTL-433Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX2573YD is determined by strict alignment of the following parameters:

Primary Substitution Criteria:

• Color: Yellow
• Lens Transparency: Diffused
• Lens Style: Rectangle with Flat Top
• Lens Size: 5.00mm x 2.00mm
• Voltage - Forward (Vf): 2.1V nominal
• Mounting Type: Through Hole
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Height (Max): Within acceptable PCB clearance tolerance
• Wavelength - Peak: Yellow spectrum range (580-590nm)

The LTL-433Y from Lite-On Inc. meets all primary substitution criteria and maintains full regulatory compliance. Variations in millicandela rating, test current, and viewing angle are application-dependent and do not preclude substitution when brightness and angular distribution requirements are satisfied by the substitute component.

Parameter Comparison

Engineering Selection Recommendations

SSL-LX2573YD Selection Criteria:

• Applications requiring 10mcd brightness at 20mA test current
• Designs with 110° viewing angle specification
• Original equipment manufacturer (OEM) applications with locked component specifications
• Active product status with full manufacturer support

LTL-433Y Selection Criteria:

• Applications tolerant of 3.7mcd brightness at 10mA test current
• Designs benefiting from 140° wider viewing angle
• Power-constrained applications where 10mA operation is preferred
• Inventory availability or supply chain optimization scenarios
• Active product status with full manufacturer support

Both components maintain identical forward voltage (2.1V), mechanical form factor (5.00mm x 2.00mm rectangular diffused lens), through-hole radial mounting, and regulatory compliance (ROHS3, MSL 1). Selection between these components is determined by brightness and angular distribution requirements specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can LTL-433Y directly replace SSL-LX2573YD in all applications?

A: Direct replacement is possible only when the application circuit tolerates the LTL-433Y's lower brightness (3.7mcd versus 10mcd) and wider viewing angle (140° versus 110°). Forward voltage and mechanical compatibility are identical. Circuit validation is required for brightness-critical applications.

Q: What is the mechanical compatibility between these components?

A: Both components feature identical lens dimensions (5.00mm x 2.00mm), rectangular diffused lens style, through-hole radial mounting, and yellow color. The LTL-433Y maximum height is 7.50mm compared to 7.00mm for the SSL-LX2573YD. This 0.50mm difference is typically accommodated within standard PCB clearance tolerances.

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

A: No. Both components are ROHS3 compliant, carry MSL 1 (unlimited moisture sensitivity), and share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications.

Q: What is the significance of the different test currents (20mA vs 10mA)?

A: Test current indicates the standard operating point at which brightness is measured. The SSL-LX2573YD achieves 10mcd at 20mA, while the LTL-433Y achieves 3.7mcd at 10mA. Applications must verify that the substitute component's brightness output meets circuit requirements at the intended operating current.

Q: How do the wavelength specifications compare?

A: Both components share identical peak wavelength (585nm) and operate within the yellow spectrum. The LTL-433Y specifies dominant wavelength at 590nm, which remains within acceptable yellow LED specifications and does not affect visual compatibility.