XRCWHT-L1-0000-003B6 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-003B6 is a CreeLED XLamp® XR-C warm white LED in 3529 surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The XR-C series has been superseded by the XR-E series, which maintains mechanical and electrical compatibility while offering improved performance characteristics and active product status.

Substiute Parts

XRCWHT-L1-0000-003B6

CreeLED, Inc.In Stock: 941XRCWHT-L1-0000-003B6 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The XREWHT-L1-0000-004E8 qualifies as a direct substitute based on the following alignment of critical parameters:

Mechanical Compatibility: Both parts use identical 3529 (9073 Metric) surface mount package with matching footprint dimensions (0.354" L x 0.276" W / 9.00mm x 7.00mm) and maximum seated height (0.181" / 4.60mm).

Electrical Compatibility: Both parts operate at similar forward voltage (4.6V vs. 3.3V) and test current (350mA), with compatible maximum current ratings (500mA vs. 700mA). The substitute supports the same 90° viewing angle.

Regulatory Compliance: Both parts maintain RoHS Compliance, REACH Unaffected status, and identical moisture sensitivity level (MSL 4, 72 Hours), ensuring equivalent environmental and regulatory qualification.

Performance Enhancement: The substitute part offers improved luminous flux (54lm vs. 49lm at test current), higher efficiency (47 lm/W vs. 40 lm/W), and defined color temperature (2700K warm white) with CRI 80 typical.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is the qualified substitute for the obsolete XRCWHT-L1-0000-003B6. Selection is supported by:

Active Product Status: The substitute maintains active product status with CreeLED, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Regulatory Alignment: Both parts carry identical RoHS Compliance and REACH Unaffected certifications, maintaining regulatory qualification for existing designs without additional compliance review.

Mechanical Interchangeability: Identical 3529 package footprint, dimensions, and mounting characteristics enable direct PCB layout compatibility without redesign.

Electrical Compatibility: Forward voltage differential (4.6V to 3.3V) and current ratings remain within acceptable operating margins for standard LED driver circuits. The substitute's lower thermal resistance (8°C/W vs. 12°C/W) provides thermal performance improvement.

Performance Enhancement: The substitute delivers higher luminous flux and efficiency at identical test current, with defined 2700K color temperature and CRI 80 specification for warm white applications.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-004E8 be used as a direct replacement in existing designs using XRCWHT-L1-0000-003B6?

A: Yes. Both parts share identical 3529 surface mount package dimensions and footprint. Forward voltage difference (3.3V vs. 4.6V) is within typical LED driver tolerance. Existing PCB layouts and solder profiles require no modification.

Q: What is the impact of the 0.2V forward voltage difference between the two parts?

A: The substitute operates at 3.3V typical versus 4.6V for the original. This 0.2V reduction is within standard LED driver compensation range and does not require circuit redesign. Driver current regulation remains effective across this voltage window.

Q: Does the substitute part maintain the same color characteristics?

A: The substitute specifies 2700K warm white with CRI 80 typical, whereas the original part does not specify color temperature or CRI. Both are classified as white LEDs. Applications requiring specific color temperature should verify 2700K warm white compatibility with system requirements.

Q: Are there packaging differences between the two parts?

A: The original part is supplied in standard packaging. The substitute is available in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Both use identical 3529 (9073 Metric) component package.

Q: What is the significance of the improved thermal resistance in the substitute?

A: The substitute exhibits 8°C/W thermal resistance compared to 12°C/W for the original. Lower thermal resistance improves heat dissipation from the LED junction, supporting higher ambient temperature operation and extended thermal margin in thermal-constrained applications.

Q: Are both parts compliant with the same environmental and regulatory standards?

A: Yes. Both parts carry RoHS Compliance, REACH Unaffected status, and identical MSL 4 (72 Hours) moisture sensitivity classification, ensuring equivalent environmental qualification and handling requirements.