LED XLAMP WARM WHITE XRCWHT-L1-0000-003B7 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-003B7 is a surface-mount LED from CreeLED's XLamp® XR-C series, designed for warm white lighting applications. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance requirements. The part operates at 4.6V forward voltage with a 350mA test current, delivering 49 lumens at 25°C in a compact 3529 (9073 Metric) package. Due to its obsolete status, equivalent alternatives from active product lines are necessary for new designs and component replenishment.

Substiute Parts

XRCWHT-L1-0000-003B7

CreeLED, Inc.In Stock: 1145XRCWHT-L1-0000-003B7 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-L1-0000-003B7 is determined by the following critical parameters:

Mechanical Compatibility: Package type (3529/9073 Metric), mounting type (Surface Mount), and physical dimensions (9.00mm x 7.00mm x 4.60mm max height) must remain identical to ensure PCB compatibility without redesign.

Electrical Compatibility: Forward voltage (Vf) tolerance, test current rating (350mA nominal operation), and maximum current rating must support existing circuit designs. Flux output at 25°C and test current should fall within acceptable ranges for the intended application.

Optical Compatibility: Viewing angle (90°) and color characteristics (warm white) must match application requirements.

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

The XREWHT-L1-0000-004E8 qualifies as a direct substitute based on identical package geometry, matching viewing angle, compatible voltage and current specifications, and active product status with equivalent regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is the qualified substitute for the obsolete XRCWHT-L1-0000-003B7. Selection is based on the following engineering criteria:

Product Status: The substitute part is active, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Regulatory Compliance: Both parts maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements for manufacturing and distribution.

Package and Mechanical Compatibility: Identical 3529 (9073 Metric) package dimensions and surface-mount configuration enable direct PCB substitution without layout modifications.

Electrical Operation: The substitute operates at 3.3V forward voltage versus 4.6V for the main part, representing a 0.2V reduction. Both parts operate at identical 350mA test current. Circuit designs must accommodate this voltage differential through appropriate current-limiting resistor adjustment or power supply tolerance verification.

Thermal Performance: The substitute exhibits superior thermal characteristics (8°C/W versus 12°C/W), providing improved heat dissipation in the same package footprint.

Optical Characteristics: The substitute delivers higher luminous flux (54lm versus 49lm at 25°C) and improved efficiency (47 lm/W versus 40 lm/W), with specified 2700K color temperature and 80 CRI for warm white applications.

Frequently Asked Questions (FAQ)

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

A: The substitute part shares identical package geometry and mounting type, enabling direct PCB placement. However, the 0.2V lower forward voltage (3.3V versus 4.6V) requires circuit verification. If the original design uses a fixed current source or current-limiting resistor, the lower voltage may result in slightly higher current draw. Designs with regulated power supplies or wide voltage tolerance typically accommodate this difference without modification.

Q: What are the key mechanical compatibility factors?

A: Both parts use the 3529 (9073 Metric) surface-mount package with identical footprint dimensions (9.00mm x 7.00mm) and maximum seated height (4.60mm). PCB land patterns, reflow profiles, and assembly processes remain unchanged.

Q: How do the optical characteristics compare?

A: The substitute provides 10% higher luminous flux (54lm versus 49lm) at identical test current, resulting in improved efficiency (47 lm/W versus 40 lm/W). The substitute specifies 2700K color temperature with 80 CRI, suitable for warm white lighting applications. The main part does not specify CCT or CRI values.

Q: Are there storage and handling differences?

A: Both parts carry MSL 4 (72 Hours) moisture sensitivity rating, requiring identical storage conditions and handling procedures. No additional precautions are necessary when transitioning between parts.

Q: What is the impact of the improved thermal resistance?

A: The substitute's lower thermal resistance (8°C/W versus 12°C/W) indicates superior heat dissipation capability within the same package. This provides thermal margin in applications operating near maximum current ratings or in elevated ambient temperature environments.