XRCWHT-L1-0000-004E8 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-004E8 is an XLamp® XR-C warm white LED (2700K) in a 3529 surface mount package, designed for lighting applications requiring warm color temperature output. This part is classified as obsolete, making identification of compatible substitutes essential for ongoing production and maintenance applications. The XR-C series has been superseded by newer generations within the XLamp® product line, necessitating equivalent part identification for design continuity and component availability.

Substiute Parts

XRCWHT-L1-0000-004E8

CreeLED, Inc.In Stock: 1093XRCWHT-L1-0000-004E8 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XRCWHT-L1-0000-004E8 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Color and CCT: White, Warm 2700K
• Package / Case: 3529 (9073 Metric)
• Mounting Type: Surface Mount
• Viewing Angle: 90°
• CRI: 80 (Typ)

Allowable Variation Parameters:

• Forward Voltage (Vf): 3.3V to 4.6V range acceptable for circuit compatibility
• Flux Output: 52lm to 57lm range maintains functional equivalence
• Maximum Current Rating: Higher ratings (500mA to 700mA) provide design margin
• Thermal Resistance: Lower values (8°C/W to 12°C/W) indicate improved thermal performance
• Lumens/Watt Efficiency: Higher efficiency (44 to 47 lm/W) represents performance improvement

The XREWHT-L1-0000-004E8 qualifies as a parametric equivalent based on matching all mandatory parameters while offering improved electrical characteristics within acceptable tolerance ranges.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is the direct substitute for the obsolete XRCWHT-L1-0000-004E8. Both parts maintain identical compliance certifications (RoHS Compliant, REACH Unaffected, EAR99 classification) and identical moisture sensitivity levels (MSL 4, 72 Hours).

The substitute part offers measurable improvements: lower forward voltage (3.3V vs. 4.6V), higher maximum current rating (700mA vs. 500mA), improved thermal resistance (8°C/W vs. 12°C/W), and higher luminous efficacy (47 lm/W vs. 44 lm/W). These characteristics represent evolutionary advancement within the XLamp® product family while maintaining functional and mechanical compatibility.

The active product status of the XREWHT-L1-0000-004E8 ensures ongoing availability and supply chain continuity compared to the obsolete XR-C series.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-004E8 be used as a direct replacement in existing designs?

A: Yes. Both parts share identical package dimensions (3529 / 9073 Metric), mounting type (surface mount), color temperature (2700K warm white), flux output range (52lm to 57lm), CRI rating (80), and viewing angle (90°). The lower forward voltage (3.3V vs. 4.6V) of the substitute may require minor circuit adjustments to current-limiting resistor values, but mechanical and optical compatibility is direct.

Q: What is the significance of the lower forward voltage in the substitute part?

A: The XREWHT-L1-0000-004E8 operates at 3.3V typical forward voltage compared to 4.6V for the XRCWHT-L1-0000-004E8. This 0.2V difference reduces power dissipation and heat generation in series resistor networks. Circuit designs using fixed current sources or active current regulation are unaffected. Designs using passive resistor-based current limiting may require resistor value recalculation to maintain the 350mA test current specification.

Q: Does the improved thermal resistance affect circuit design?

A: The substitute part exhibits superior thermal resistance (8°C/W vs. 12°C/W), indicating more efficient heat transfer from the LED junction to the PCB. This improvement reduces junction temperature rise under identical operating conditions, extending LED lifespan and improving color stability. No circuit redesign is required; this represents a performance enhancement.

Q: Are both parts suitable for the same environmental and compliance requirements?

A: Yes. Both parts carry identical RoHS Compliance status, REACH Unaffected designation, EAR99 export classification, and MSL 4 moisture sensitivity rating (72-hour floor life). Compliance documentation and environmental certifications are equivalent.

Q: What is the inventory status difference between these parts?

A: The XRCWHT-L1-0000-004E8 (obsolete) has 1060 pieces in stock. The XREWHT-L1-0000-004E8 (active) has 1088 pieces in stock. The active status of the substitute ensures continued availability for future orders, while the obsolete part represents limited remaining inventory.