WP1503EB/2SRD Equivalent & Substitute Parts

Part Overview

The WP1503EB/2SRD is a dual-level red LED circuit board indicator manufactured by Kingbright, featuring a 5mm diffused tinted lens with right-angle through-hole mounting. This component is classified as obsolete product status. Locating equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications. The part operates at 1.85V with 20mA current rating and delivers 1000mcd brightness output.

Substiute Parts

WP1503EB/2SRD

KingbrightIn Stock: 1021WP1503EB/2SRD Datasheet

Current PartRFQ

WP1503EB/2ID

KingbrightIn Stock: 1105WP1503EB/2ID Datasheet

MFR RecommendedRFQ

SSF-LXHM250IID

Lumex Opto/Components Inc.In Stock: 1074SSF-LXHM250IID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WP1503EB/2SRD are identified based on the following critical parameters that determine functional compatibility:

Mechanical Compatibility Parameters:

• Lens size: 5mm, T-1 3/4
• Lens style: Round with Domed Top
• Mounting type: Through Hole, Right Angle
• Configuration: 2 High (dual-level)

Electrical Compatibility Parameters:

• Color: Red (x 2)
• Current rating: 20mA
• Viewing angle: 60°
• Lens type: Diffused, Tinted

Regulatory Compliance Parameters:

• RoHS3 Compliant
• REACH Unaffected
• Moisture Sensitivity Level: 1 (Unlimited)

Substitutes are grouped into two categories: MFR Recommended (same manufacturer, active product status) and Similar Manufacturer (alternative manufacturer, active product status). Voltage rating and wavelength peak variations are acceptable within the substitute group provided all mechanical and regulatory parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: WP1503EB/2ID

The WP1503EB/2ID is the manufacturer-recommended substitute for the obsolete WP1503EB/2SRD. Both components share the same base product number (WP1503) and are manufactured by Kingbright. The WP1503EB/2ID maintains active product status, ensuring long-term availability and supply chain stability. All mechanical parameters, regulatory compliance certifications (ROHS3 Compliant, REACH Unaffected), and moisture sensitivity ratings are identical. The voltage rating increases from 1.85V to 2V, and the millicandela rating decreases from 1000mcd to 50mcd. The wavelength peak shifts from 660nm to 627nm. These electrical parameter variations are within acceptable substitution tolerances for circuit board indicator applications.

Secondary Substitute: SSF-LXHM250IID

The SSF-LXHM250IID is a similar manufacturer alternative produced by Lumex Opto/Components Inc. This component maintains identical mechanical specifications, mounting configuration, and regulatory compliance status. The SSF-LXHM250IID operates at 2V with 40mcd brightness and 635nm wavelength peak. Active product status and equivalent compliance certifications support its use as an alternative when primary substitutes are unavailable.

Frequently Asked Questions (FAQ)

Q: Can WP1503EB/2ID directly replace WP1503EB/2SRD in existing designs?

A: Yes. Both components share identical mechanical specifications (5mm T-1 3/4 lens, right-angle through-hole mounting, round domed top), electrical current rating (20mA), viewing angle (60°), and regulatory compliance status. The voltage rating difference (1.85V to 2V) and millicandela reduction (1000mcd to 50mcd) must be evaluated within the context of the specific circuit application.

Q: What are the key differences between the Kingbright and Lumex substitutes?

A: Both WP1503EB/2ID and SSF-LXHM250IID maintain identical mechanical form factors and mounting types. The primary differences are manufacturer origin and brightness output. The Kingbright WP1503EB/2ID delivers 50mcd at 627nm wavelength, while the Lumex SSF-LXHM250IID delivers 40mcd at 635nm wavelength. Both operate at 2V with 20mA current rating.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The WP1503EB/2SRD (main part), WP1503EB/2ID (MFR recommended), and SSF-LXHM250IID (similar manufacturer) are all ROHS3 Compliant with REACH Unaffected status and Moisture Sensitivity Level 1 (Unlimited).

Q: What is the significance of the wavelength peak variation between parts?

A: The wavelength peak values (660nm for WP1503EB/2SRD, 627nm for WP1503EB/2ID, and 635nm for SSF-LXHM250IID) represent the dominant emission wavelength in the red spectrum. These variations fall within the red LED category and are acceptable for circuit board indicator applications where precise wavelength matching is not a critical design parameter.

Q: Why is the millicandela rating significantly lower in the substitute parts?

A: The WP1503EB/2SRD delivers 1000mcd brightness, while substitutes deliver 40-50mcd. This reduction reflects differences in LED chip design and optical efficiency between the obsolete part and current-generation alternatives. Circuit designs must account for this brightness differential through appropriate current limiting resistor adjustments or circuit topology modifications.

Q: Can SSF-LXHM250IID be used if WP1503EB/2ID is unavailable?

A: Yes. The SSF-LXHM250IID maintains all critical mechanical and regulatory parameters required for substitution. The alternative manufacturer source provides supply chain flexibility when primary substitutes reach inventory constraints.