LED XLAMP COOL WHITE 6000K SMD XRCWHT-L1-0000-00503 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-00503 is a CreeLED XLamp® XR-C series cool white LED (6000K) designed for surface mount applications in the 3529 (9073 Metric) package. This component delivers 59 lumens at 350mA with a forward voltage of 4.6V and a 90° viewing angle, achieving 48 lm/W efficiency. The product is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility while meeting current supply chain requirements.

Substiute Parts

XRCWHT-L1-0000-00503

CreeLED, Inc.In Stock: 874XRCWHT-L1-0000-00503 Datasheet

Current PartRFQ

XREWHT-L1-0000-00603

CreeLED, Inc.In Stock: 1097XREWHT-L1-0000-00603 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XRCWHT-L1-0000-00503 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Color and CCT: White, Cool 6000K (exact match required)
• Package / Case: 3529 (9073 Metric) (identical footprint and height)
• Mounting Type: Surface Mount (same assembly process)
• Viewing Angle: 90° (optical performance requirement)
• CRI: 75 (color rendering specification)

Operational Parameters (within acceptable ranges):

• Forward Voltage (Vf): 3.3V–4.6V (compatible with standard LED driver circuits)
• Test Current: 350mA (standard operating point)
• Maximum Current: ≥500mA (thermal and electrical headroom)
• Lumens/Watt: ≥48 lm/W (efficiency baseline)

Compliance Requirements:

• RoHS Compliant status
• REACH Unaffected status
• MSL Rating: 4 (72 Hours)

The XREWHT-L1-0000-00603 (XLamp® XR-E series) qualifies as a direct substitute based on matching all mandatory criteria and exceeding operational performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-00603 is the qualified substitute for the obsolete XRCWHT-L1-0000-00503 based on the following engineering factors:

Product Status Alignment: The substitute is active and currently in production, ensuring long-term supply chain availability and support, whereas the main part is obsolete.

Electrical Compatibility: The substitute operates at 3.3V (versus 4.6V), representing a 0.2V reduction that is within standard LED driver tolerance ranges. Both components operate at the same 350mA test current and maintain identical CRI and viewing angle specifications.

Performance Enhancement: The substitute delivers 65 lumens at 350mA (versus 59 lumens), representing a 10% increase in luminous flux. Efficiency improves from 48 lm/W to 56 lm/W, a 17% gain. Maximum current rating increases from 500mA to 1A, providing additional thermal and electrical headroom.

Thermal Improvement: Thermal resistance decreases from 12°C/W to 8°C/W, indicating superior heat dissipation characteristics in the substitute design.

Compliance Certification: Both components maintain identical RoHS Compliant, REACH Unaffected, and MSL 4 (72 Hours) certifications, ensuring regulatory and environmental compatibility.

Mechanical Compatibility: Identical package dimensions (3529 / 9073 Metric), footprint (9.00mm × 7.00mm), and seated height (4.60mm) ensure direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-00603 be used as a direct replacement for the XRCWHT-L1-0000-00503 without circuit modification?

A: Yes. Both components share identical package geometry, mounting type, viewing angle, and CRI specifications. The 0.2V forward voltage difference (4.6V to 3.3V) is within standard LED driver compensation ranges and does not require circuit redesign. Existing PCB layouts and assembly processes remain unchanged.

Q: What is the impact of the lower forward voltage (3.3V vs. 4.6V) on driver design?

A: The 0.2V reduction results in lower power dissipation in series resistors or current-limiting circuits. Standard LED drivers with voltage regulation capability accommodate this variation without modification. If the original circuit uses a fixed resistor for current limiting, the substitute will draw slightly more current at the same voltage, but remains within the 1A maximum rating.

Q: Does the increased luminous flux (65 lm vs. 59 lm) affect optical design?

A: The 10% flux increase maintains the same 90° viewing angle and identical package dimensions. Optical system performance improves proportionally. No lens or reflector redesign is required.

Q: Are there any thermal management differences between the two parts?

A: The substitute exhibits superior thermal performance (8°C/W vs. 12°C/W). This improvement reduces junction temperature at equivalent power dissipation, extending component lifetime and improving reliability. Existing thermal management solutions remain adequate.

Q: What is the packaging difference between the main part and substitute?

A: The main part (XRCWHT-L1-0000-00503) is supplied in standard packaging. The substitute (XREWHT-L1-0000-00603) is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Both are compatible with automated pick-and-place equipment.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the XRCWHT-L1-0000-00503 and XREWHT-L1-0000-00603 are RoHS Compliant and REACH Unaffected, meeting all applicable environmental and regulatory requirements.

Q: What is the MSL (Moisture Sensitivity Level) rating, and does it affect storage?

A: Both components carry an MSL 4 rating, requiring storage at ≤40°C and ≤90% relative humidity for up to 72 hours after opening. Standard dry-pack storage with desiccant is required for extended shelf life.