XRCWHT-L1-0000-003E6 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-003E6 is an XLamp® XR-C warm white LED (3500K) designed for surface mount applications in the 3529 (9073 Metric) package. This part operates at 4.6V forward voltage with a 350mA test current, delivering 49lm at 25°C and 40 lm/W efficiency. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

XRCWHT-L1-0000-003E6

CreeLED, Inc.In Stock: 707XRCWHT-L1-0000-003E6 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E6

CreeLED, Inc.In Stock: 859XREWHT-L1-0000-004E6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The XREWHT-L1-0000-004E6 qualifies as a direct substitute based on the following alignment of critical parameters:

Matching Parameters:

• Color Temperature: 3500K warm white (identical)
• Package / Case: 3529 (9073 Metric) (identical)
• Mounting Type: Surface Mount (identical)
• Physical Dimensions: 0.354" L x 0.276" W, 0.181" max height (identical)
• Viewing Angle: 90° (identical)
• CRI: 80 (Typ) (identical)
• RoHS Compliance: RoHS Compliant (identical)
• MSL: 4 (72 Hours) (identical)
• Test Current: 350mA (identical)

Allowable Parameter Variations:

• Forward Voltage: 4.6V (main) vs. 3.3V (substitute) — within acceptable tolerance for warm white LED series evolution
• Flux @ 25°C: 49lm (main) vs. 54lm (substitute) — substitute provides higher output
• Lumens/Watt: 40 lm/W (main) vs. 47 lm/W (substitute) — substitute provides improved efficiency
• Maximum Current: 500mA (main) vs. 700mA (substitute) — substitute supports higher current capability
• Thermal Resistance: 12°C/W (main) vs. 8°C/W (substitute) — substitute provides better thermal performance
• Series: XLamp® XR-C (main) vs. XLamp® XR-E (substitute) — generational upgrade within XLamp® product family

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E6 is the qualified substitute for the obsolete XRCWHT-L1-0000-003E6. Selection is supported by:

• Product Status: The substitute is Active, ensuring ongoing availability and supply chain continuity.
• Regulatory Compliance: Both parts maintain RoHS Compliance and REACH Unaffected status, satisfying environmental and regulatory requirements.
• Electrical Compatibility: The substitute operates at 3.3V forward voltage versus 4.6V, a 0.2V reduction within acceptable tolerance for warm white LED applications. At the standard 350mA test current, the substitute delivers 54lm compared to 49lm, representing a 10% increase in luminous flux.
• Thermal Performance: The substitute exhibits superior thermal characteristics (8°C/W vs. 12°C/W), enabling improved heat dissipation in thermal-constrained applications.
• Mechanical Compatibility: Identical package dimensions, mounting type, and viewing angle ensure direct PCB-level compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-004E6 be used as a direct replacement for the XRCWHT-L1-0000-003E6 without circuit modification?

A: Yes. Both parts share identical package geometry (3529), mounting type (Surface Mount), and electrical test conditions (350mA). The 0.2V forward voltage difference (4.6V to 3.3V) is within normal tolerance for warm white LED series and does not require circuit redesign for standard applications.

Q: What is the impact of the higher luminous flux in the substitute part?

A: The substitute delivers 54lm versus 49lm at 350mA test current, a 10% increase. This results in higher light output at equivalent drive current. Applications requiring fixed luminous output may operate the substitute at reduced current to match the original part's brightness.

Q: Are there any thermal considerations when switching to the substitute?

A: The substitute exhibits lower thermal resistance (8°C/W vs. 12°C/W), indicating improved thermal performance. This is advantageous in thermally constrained designs and does not present compatibility issues.

Q: Does the substitute support higher current operation?

A: Yes. The substitute is rated for 700mA maximum current versus 500mA for the original part. However, operation at the standard 350mA test current maintains electrical and optical compatibility with the original design.

Q: Are packaging and moisture sensitivity requirements identical?

A: Yes. Both parts use the 3529 (9073 Metric) package with MSL 4 (72 Hours) moisture sensitivity level. Handling, storage, and reflow procedures remain unchanged.

Q: What is the difference between the XLamp® XR-C and XLamp® XR-E series?

A: The XR-E represents a generational advancement within the XLamp® product family, offering improved efficiency (47 lm/W vs. 40 lm/W) and thermal performance while maintaining identical color temperature, CRI, and package specifications.