XRCWHT-L1-0000-004B9 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-004B9 is a CreeLED XLamp® XR-C warm white LED in 3529 surface mount package. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing production and maintenance applications. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, which maintains compatibility across key electrical and mechanical parameters while offering improved performance characteristics and active product status.

Substiute Parts

XRCWHT-L1-0000-004B9

CreeLED, Inc.In Stock: 1066XRCWHT-L1-0000-004B9 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

CreeLED, Inc.In Stock: 1113XREWHT-L1-0000-004E8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XRCWHT-L1-0000-004B9 is determined by the following critical parameters:

Mechanical Compatibility: Package type (3529), mounting type (surface mount), and physical dimensions (9.00mm x 7.00mm x 4.60mm max height) must remain identical to ensure PCB layout compatibility without redesign.

Electrical Compatibility: Test current (350mA), viewing angle (90°), and luminous flux output (54lm nominal at 25°C) establish functional equivalence. Forward voltage tolerance (3.3V to 4.6V range) is acceptable within standard LED circuit design margins.

Performance Metrics: Lumens/Watt efficiency, thermal resistance, and maximum current ratings determine thermal management and power budget compatibility.

Regulatory Compliance: RoHS compliance and MSL rating must be maintained for manufacturing and storage requirements.

The XREWHT-L1-0000-004E8 qualifies as a direct substitute based on identical package, mounting type, dimensions, test current, viewing angle, and luminous flux specification, with improved thermal characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is the qualified substitute for the obsolete XRCWHT-L1-0000-004B9. Selection is based on the following engineering criteria:

Product Status: The substitute part maintains active product status with CreeLED, Inc., ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Regulatory Compliance: Both parts maintain RoHS compliance and identical MSL ratings, satisfying manufacturing and storage requirements without process modification.

Mechanical Compatibility: Identical package type, mounting configuration, and physical dimensions enable direct PCB substitution without layout redesign.

Electrical Compatibility: Matching test current (350mA), viewing angle (90°), and luminous flux specification (54lm) ensure functional equivalence in circuit operation. The 0.2V forward voltage reduction (4.6V to 3.3V) is within acceptable design margins for standard LED driver circuits.

Performance Enhancement: The substitute part offers improved thermal resistance (8°C/W vs. 12°C/W), higher maximum current rating (700mA vs. 500mA), and superior luminous efficiency (47 lm/W vs. 44 lm/W), providing thermal and performance benefits in production applications.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-004E8 be used as a direct replacement without PCB modification?

A: Yes. Both parts share identical package type (3529), mounting type (surface mount), and physical dimensions (9.00mm x 7.00mm x 4.60mm). No PCB layout changes are required.

Q: What is the impact of the 0.2V forward voltage difference (4.6V vs. 3.3V)?

A: The forward voltage reduction is within standard LED circuit design tolerance. Existing LED driver circuits designed for 4.6V operation will function correctly with the 3.3V substitute part. Verify driver compliance with the lower voltage specification for your specific application.

Q: Are there differences in color output between the two parts?

A: The main part (XRCWHT-L1-0000-004B9) has unspecified color temperature. The substitute part (XREWHT-L1-0000-004E8) is specified at 2700K warm white with CRI 80 (Typ). Both parts are classified as white LEDs with identical luminous flux (54lm at 350mA). Verify color temperature requirements for your application.

Q: What are the thermal management implications?

A: The substitute part has superior thermal resistance (8°C/W vs. 12°C/W), resulting in lower junction temperature at equivalent power dissipation. This improvement enhances reliability and allows higher current operation (700mA vs. 500mA maximum).

Q: Are storage and handling requirements identical?

A: Yes. Both parts maintain MSL rating 4 (72 Hours), requiring identical moisture control and storage protocols.

Q: Is the substitute part available in the same packaging format?

A: The substitute part is supplied in Tape & Reel (TR) format. Confirm packaging compatibility with your assembly process requirements.