SSL-LX203CYT Equivalent & Substitute Parts Reference

Part Overview

The SSL-LX203CYT is a yellow LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This discrete 2.1V radial LED features a 2.00mm diameter clear domed lens and operates at 20mA test current with a 160° viewing angle. The product is classified as obsolete, necessitating identification of functionally equivalent active alternatives for ongoing design requirements and procurement continuity.

Substiute Parts

SSL-LX203CYT

Lumex Opto/Components Inc.In Stock: 1004SSL-LX203CYT Datasheet

Current PartRFQ

WP4060YD

KingbrightIn Stock: 2110WP4060YD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX203CYT is determined by the following critical parameters:

Electrical Compatibility:

• Forward voltage (Vf) of 2.1V nominal
• Test current of 20mA
• Yellow color specification (wavelength range 585-590nm)

Mechanical Compatibility:

• Through-hole radial mounting configuration
• Lens diameter and form factor suitable for 2.00mm T-2 applications

Regulatory Compliance:

• ROHS3 compliance requirement
• REACH unaffected status

The WP4060YD from Kingbright satisfies these substitution criteria through matching electrical parameters (2.1V forward voltage, 20mA test current), yellow color specification (588nm dominant wavelength), through-hole radial mounting, and equivalent regulatory compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The WP4060YD is an active substitute for the obsolete SSL-LX203CYT based on electrical and mechanical parameter alignment. Both components share identical forward voltage (2.1V) and test current (20mA) specifications, enabling direct circuit-level compatibility. Both maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.

Differences in lens transparency (clear versus diffused), millicandela rating (6mcd versus 8mcd), lens diameter (2.00mm versus 1.80mm), and viewing angle (160° versus 70°) represent design trade-offs that must be evaluated within specific application contexts. The WP4060YD's higher luminous intensity and narrower viewing angle reflect typical performance characteristics of diffused-lens designs compared to clear-lens alternatives.

Frequently Asked Questions (FAQ)

Q: Can the WP4060YD directly replace the SSL-LX203CYT in existing circuit designs?

A: Electrical substitution is supported. Both components operate at 2.1V forward voltage with 20mA test current. Physical mounting compatibility exists through radial through-hole configuration. Optical performance differences (lens transparency, viewing angle, millicandela rating) require application-specific evaluation.

Q: What are the key differences between these two yellow LEDs?

A: The SSL-LX203CYT features a clear lens with 160° viewing angle and 6mcd brightness. The WP4060YD features a diffused lens with 70° viewing angle and 8mcd brightness. Peak wavelengths differ slightly (585nm versus 590nm), both within yellow spectrum. Lens diameter differs (2.00mm versus 1.80mm).

Q: Are both components RoHS and REACH compliant?

A: Yes. Both SSL-LX203CYT and WP4060YD are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: What is the primary reason for substitution?

A: The SSL-LX203CYT is classified as obsolete. The WP4060YD is an active product with equivalent electrical specifications and regulatory compliance, providing procurement continuity.

Q: Does lens diameter difference affect mechanical fit?

A: Lens diameter differs (2.00mm versus 1.80mm). Physical mounting compatibility depends on specific PCB hole sizing and mechanical constraints of the application. Radial lead configuration remains consistent between both components.

Q: How do viewing angles differ between these components?

A: The SSL-LX203CYT provides 160° viewing angle (wide distribution). The WP4060YD provides 70° viewing angle (narrow distribution). Application requirements for light distribution must determine suitability.