XRCWHT-L1-0000-003B8 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-003B8 is a CreeLED XLamp® XR-C warm white LED in 3529 surface mount package. 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 The XR-C series has been superseded by newer XLamp® generations, requiring careful parameter matching for direct replacement in existing designs.

Substiute Parts

XRCWHT-L1-0000-003B8

CreeLED, Inc.In Stock: 987XRCWHT-L1-0000-003B8 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The XRCWHT-L1-0000-003B8 has one identified substitute: XREWHT-L1-0000-004E8. Substitution eligibility is determined by the following critical parameters:

• Package / Case: Both parts use 3529 (9073 Metric) surface mount package
• Mounting Type: Both are surface mount components
• Physical Dimensions: Identical footprint (9.00mm × 7.00mm) and height (4.60mm)
• Viewing Angle: Both maintain 90° viewing angle
• Color Category: Both are white LEDs
• Compliance: Both are RoHS Compliant and REACH Unaffected
• MSL Rating: Both rated at MSL 4 (72 Hours)

The substitute part operates at a lower forward voltage (3.3V vs. 4.6V) and higher maximum current rating (700mA vs. 500mA), with improved thermal characteristics (8°C/W vs. 12°C/W). The substitute is from the XLamp® XR-E series and carries Active product status.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is a direct substitute for the obsolete XRCWHT-L1-0000-003B8 based on identical mechanical compatibility and package specifications. Both parts maintain RoHS Compliance and REACH Unaffected status, ensuring regulatory continuity.

The substitute part offers performance improvements: higher luminous flux (54 lm vs. 49 lm at 350mA), superior efficiency (47 lm/W vs. 40 lm/W), lower forward voltage (3.3V vs. 4.6V), and better thermal characteristics (8°C/W vs. 12°C/W). The Active product status of the substitute ensures long-term availability and supply chain stability compared to the Obsolete main part.

Circuit designs operating at the original 4.6V specification will function with the substitute at 3.3V, reducing power dissipation. Designs with current-limiting resistors will require recalculation due to the 0.2V voltage difference. The substitute's higher maximum current rating (700mA vs. 500mA) provides additional design margin.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-004E8 be used as a direct drop-in replacement for XRCWHT-L1-0000-003B8?

A: Yes. Both parts share identical 3529 package dimensions (9.00mm × 7.00mm × 4.60mm max height), 90° viewing angle, and surface mount configuration. PCB footprints and solder reflow profiles are compatible.

Q: What are the electrical differences between these parts?

A: The substitute operates at 3.3V forward voltage versus 4.6V for the main part, a 0.2V reduction. At the standard 350mA test current, the substitute delivers 54 lm compared to 49 lm from the main part. Maximum current rating increases from 500mA to 700mA.

Q: Will the lower forward voltage affect my circuit design?

A: Circuit behavior depends on your current-limiting topology. In series resistor designs, the 0.2V difference will slightly increase LED current. In constant-current driver designs, no adjustment is required. Verify final operating point with your specific circuit configuration.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both XRCWHT-L1-0000-003B8 and XREWHT-L1-0000-004E8 are RoHS Compliant and REACH Unaffected. MSL ratings are identical at Level 4 (72 Hours).

Q: Why is the main part listed as Obsolete?

A: The XRCWHT-L1-0000-003B8 belongs to the XLamp® XR-C series, which has been discontinued by CreeLED. The XREWHT-L1-0000-004E8 from the XLamp® XR-E series is the current generation equivalent with Active product status.

Q: What is the thermal advantage of the substitute?

A: The substitute has thermal resistance of 8°C/W compared to 12°C/W for the main part. This 33% improvement in thermal performance reduces junction temperature rise under the same operating conditions, extending LED lifespan and improving reliability.

Q: Are there any color temperature differences?

A: The substitute is specified at 2700K (warm white), while the main part does not specify CCT. Both are categorized as white LEDs. The substitute includes CRI specification of 80 (Typ), which is not provided for the main part.