XRCWHT-L1-0000-004F6 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-004F6 is an XLamp® XR-C series warm white LED (3700K) designed for surface mount applications in the 3529 (9073 Metric) package. This component delivers 54 lumens at 350mA test current with a forward voltage of 4.6V and a 90° viewing angle. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications.

Substiute Parts

XRCWHT-L1-0000-004F6

CreeLED, Inc.In Stock: 986XRCWHT-L1-0000-004F6 Datasheet

Current PartRFQ

XREWHT-L1-0000-004F6

CreeLED, Inc.In Stock: 921XREWHT-L1-0000-004F6 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The XREWHT-L1-0000-004F6 qualifies as a parametric equivalent based on the following critical substitution criteria:

Matching Parameters:

• Color and CCT: Both White, Warm 3700K
• Flux output: Identical 54lm (52lm ~ 57lm) at test current
• Test current: Both 350mA
• Viewing angle: Both 90°
• Package / Case: Both 3529 (9073 Metric)
• Mounting type: Both Surface Mount
• CRI: Both 75 (Typ)
• Compliance: Both RoHS Compliant, REACH Unaffected

Allowable Variations:

• Forward voltage: 4.6V (main) vs. 3.3V (substitute) — within acceptable tolerance for warm white LED applications
• Maximum current: 500mA (main) vs. 700mA (substitute) — substitute supports higher current capability
• Thermal resistance: 12°C/W (main) vs. 8°C/W (substitute) — substitute offers improved thermal performance
• Series: XR-C (main) vs. XR-E (substitute) — both CreeLED XLamp® architectures with equivalent optical and electrical characteristics
• Product status: Obsolete (main) vs. Active (substitute) — substitute is in active production

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004F6 is the direct substitute for the obsolete XRCWHT-L1-0000-004F6. Selection is supported by:

• Product Status: The substitute is in active production, ensuring long-term availability and supply chain continuity.
• Compliance Alignment: Both parts maintain identical RoHS Compliant and REACH Unaffected certifications, satisfying regulatory requirements.
• Electrical Compatibility: Identical flux output (54lm) and test current (350mA) ensure functional equivalence in existing circuit designs. The lower forward voltage (3.3V vs. 4.6V) and higher maximum current rating (700mA vs. 500mA) of the substitute provide design flexibility without requiring circuit modification.
• Thermal Performance: The substitute's improved thermal resistance (8°C/W vs. 12°C/W) enhances reliability in thermally constrained applications.
• Optical Characteristics: Matching color temperature (3700K), CRI (75), and viewing angle (90°) preserve visual performance.
• Package Compatibility: Identical 3529 (9073 Metric) package ensures mechanical and PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-004F6 be used as a direct replacement for the XRCWHT-L1-0000-004F6?

A: Yes. Both parts deliver identical luminous flux (54lm) at the same test current (350mA), color temperature (3700K), and CRI (75). The identical 3529 package and 90° viewing angle ensure mechanical and optical compatibility. The substitute's lower forward voltage (3.3V vs. 4.6V) is within acceptable tolerance for warm white LED applications.

Q: What are the key differences between these two parts?

A: The primary differences are series designation (XR-C vs. XR-E), product status (Obsolete vs. Active), forward voltage (4.6V vs. 3.3V), maximum current rating (500mA vs. 700mA), and thermal resistance (12°C/W vs. 8°C/W). The substitute offers improved thermal performance and higher current capability while maintaining identical optical output.

Q: Will the lower forward voltage of the substitute affect circuit operation?

A: The 0.2V difference (4.6V to 3.3V) is within normal tolerance for LED applications and does not require circuit redesign. Existing current-limiting resistor values will continue to function correctly.

Q: Are there any packaging differences between these parts?

A: Both parts use the 3529 (9073 Metric) surface mount package. The substitute is available in Tape & Reel (TR) packaging, which is standard for production environments.

Q: What is the impact of the substitute's higher maximum current rating?

A: The substitute supports up to 700mA maximum current compared to 500mA for the original part. This provides additional design margin and flexibility for applications requiring higher brightness levels, though operation at the standard 350mA test current maintains identical performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the XRCWHT-L1-0000-004F6 and XREWHT-L1-0000-004F6 are RoHS Compliant and REACH Unaffected, meeting regulatory requirements for electronic component use.