XRCWHT-L1-0000-004F8 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-004F8 is a CreeLED XLamp® XR-C warm white LED (2900K) in 3529 surface mount package. This part is classified as obsolete. Equivalent substitute parts from the active XLamp® XR-E series are available with compatible electrical and mechanical specifications, enabling direct replacement in applications requiring warm white LED lighting at 2900K color temperature.

Substiute Parts

XRCWHT-L1-0000-004F8

CreeLED, Inc.In Stock: 1070XRCWHT-L1-0000-004F8 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

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

Parametric EquivalentRFQ

XREWHT-L1-0000-004F8

CreeLED, Inc.In Stock: 1085XREWHT-L1-0000-004F8 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XRCWHT-L1-0000-004F8 are identified based on the following critical parameters:

Mechanical Compatibility:

• Identical package type: 3529 (9073 Metric)
• Identical mounting type: Surface Mount
• Identical physical dimensions: 0.354" L x 0.276" W (9.00mm x 7.00mm)
• Identical seated height: 0.181" (4.60mm)

Optical Compatibility:

• Identical color: White, Warm
• Identical CCT: 2900K
• Identical viewing angle: 90°
• Identical CRI: 80 (Typ)
• Identical flux output @ 25°C, 350mA: 54lm (52lm ~ 57lm)

Electrical Compatibility:

• Identical test current: 350mA
• Identical lumens/watt efficiency: 47 lm/W (substitute) vs 44 lm/W (main part)
• Forward voltage tolerance: 3.3V (substitute) vs 4.6V (main part) — within acceptable operating range for warm white LED applications
• Maximum current rating: 700mA (substitute) vs 500mA (main part) — substitute provides higher current capability

Regulatory & Environmental:

• Identical RoHS compliance status
• Identical MSL rating: 4 (72 Hours)
• Identical REACH status: REACH Unaffected

The XLamp® XR-E series substitutes (XREWHT-L1-0000-004E8 and XREWHT-L1-0000-004F8) are active products with enhanced thermal performance (8°C/W vs 12°C/W) and higher maximum current ratings, making them direct functional replacements for the obsolete XR-C series part.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: XREWHT-L1-0000-004F8

The XREWHT-L1-0000-004F8 is the direct equivalent for the XRCWHT-L1-0000-004F8. Both parts operate at 2900K color temperature with identical optical and mechanical specifications. The substitute is an active product from CreeLED's current XLamp® XR-E lineup, ensuring long-term availability and supply chain continuity. The substitute offers improved thermal performance (8°C/W vs 12°C/W) and higher maximum current rating (700mA vs 500mA), providing enhanced reliability in thermal management applications. Both parts maintain identical RoHS compliance and MSL ratings.

Secondary Substitute: XREWHT-L1-0000-004E8

The XREWHT-L1-0000-004E8 operates at 2700K color temperature instead of 2900K. This part is suitable for applications where a slightly cooler warm white tone is acceptable. All other electrical, mechanical, and regulatory parameters remain identical to the primary substitute. This option provides flexibility for designs where CCT variation within the warm white spectrum is permissible.

Both substitute parts are active products with current manufacturing status, ensuring availability and compliance with current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-004F8 be used as a direct replacement for XRCWHT-L1-0000-004F8?

A: Yes. Both parts share identical package type (3529), physical dimensions (9.00mm x 7.00mm), mounting type (Surface Mount), color temperature (2900K), flux output (54lm @ 350mA), viewing angle (90°), and CRI (80). The forward voltage differs slightly (3.3V vs 4.6V), but this is within acceptable operating range for warm white LED circuits. The substitute offers improved thermal resistance and higher maximum current rating.

Q: What is the difference between XREWHT-L1-0000-004F8 and XREWHT-L1-0000-004E8?

A: The primary difference is color temperature. XREWHT-L1-0000-004F8 operates at 2900K (matching the original part), while XREWHT-L1-0000-004E8 operates at 2700K. All other specifications—flux output, viewing angle, CRI, package type, and physical dimensions—are identical. Selection depends on whether the application requires the specific 2900K color temperature or can accommodate 2700K warm white.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both XREWHT-L1-0000-004F8 and XREWHT-L1-0000-004E8 are RoHS Compliant and maintain identical MSL rating (4, 72 Hours) as the original part.

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

A: The 0.2V difference is typical between LED series generations and does not prevent direct substitution. Circuit designs for warm white LEDs at 350mA test current accommodate this voltage variation. The substitute's lower forward voltage may result in slightly lower power dissipation, improving thermal performance.

Q: Why is the original part obsolete?

A: The XRCWHT-L1-0000-004F8 (XLamp® XR-C series) has been superseded by the XLamp® XR-E series. The XR-E series provides improved thermal characteristics (8°C/W vs 12°C/W) and higher maximum current ratings (700mA vs 500mA) while maintaining identical optical and mechanical compatibility.

Q: Can I use these parts in new designs?

A: Yes. The substitute parts (XREWHT-L1-0000-004F8 and XREWHT-L1-0000-004E8) are active products with current manufacturing status. They are suitable for both replacement applications and new designs requiring warm white 3529 surface mount LEDs.

Q: What is the thermal resistance difference, and does it matter?

A: The substitute parts have thermal resistance of 8°C/W compared to 12°C/W for the original part. Lower thermal resistance improves heat dissipation from the LED junction, resulting in lower operating temperatures and potentially extended component life in thermally constrained applications.