Equivalent & Substitute Parts for XRCWHT-L1-0000-00908

Part Overview

The XRCWHT-L1-0000-00908 is a CreeLED XLamp® XR-C white surface mount LED in 3529 (9073 Metric) package format. This part is classified as obsolete, making substitute components necessary for ongoing production and design updates. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, which maintains electrical and mechanical compatibility while offering improved thermal performance and active product status.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-00908
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	84 lm (81–87 lm range)
Forward Voltage (Vf)	4.6V (Typ)
Test Current	350 mA
Maximum Current	500 mA
Lumens/Watt @ 350mA	69 lm/W
Viewing Angle	90°
Package / Case	3529 (9073 Metric)
Mounting Type	Surface Mount
Size / Dimension	0.354" L × 0.276" W (9.00 mm × 7.00 mm)
Height - Seated (Max)	0.181" (4.60 mm)
Thermal Resistance	12°C/W
RoHS Status	RoHS Compliant
MSL Rating	4 (72 Hours)

Substitute Part Grouping Explanation

Substitution for XRCWHT-L1-0000-00908 is based on the following critical parameters that must remain constant or compatible:

Electrical Compatibility:

Flux output at 25°C and 350 mA test current: 84 lm (81–87 lm range)
Color: White
Viewing angle: 90°
Test current: 350 mA

Mechanical Compatibility:

Package / Case: 3529 (9073 Metric)
Mounting type: Surface Mount
Physical dimensions: 0.354" L × 0.276" W (9.00 mm × 7.00 mm)
Height - Seated (Max): 0.181" (4.60 mm)

Regulatory & Environmental:

RoHS Compliant
MSL Rating: 4 (72 Hours)

The primary difference between the obsolete XLamp® XR-C (XRCWHT) and active XLamp® XR-E (XREWHT) substitutes is the forward voltage specification: XR-C operates at 4.6V typical, while XR-E operates at 3.3V typical. This 0.2V reduction in forward voltage, combined with improved thermal resistance (8°C/W vs. 12°C/W), makes XR-E variants direct functional replacements. All substitute parts maintain identical flux output, package dimensions, and compliance certifications.

Parameter Comparison

Parameter	XRCWHT-L1-0000-00908 (Main)	XREWHT-L1-0000-00901	XREWHT-L1-0000-00905	XREWHT-L1-0000-00907	XREWHT-L1-0000-00908	XREWHT-L1-0000-00909	XREWHT-L1-0000-00910	XREWHT-L1-0000-00937	XREWHT-L1-0000-009B1	XREWHT-L1-0000-009B2	XREWHT-L1-0000-009B3
Series	XLamp® XR-C	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Color	White	White, Cool	White	White	White	White	White	White	White	White	White
Flux @ 25°C, 350mA (lm)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)	84 (81–87)
Forward Voltage (Vf) Typ	4.6V	3.3V	3.3V	3.3V	3.3V	3.3V	3.3V	3.3V	3.3V	3.3V	3.3V
Test Current	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA	350 mA
Lumens/Watt @ 350mA	69 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W	73 lm/W
Viewing Angle	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°
Package / Case	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)	3529 (9073 Metric)
Size / Dimension	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)	0.354" L × 0.276" W (9.00 mm × 7.00 mm)
Height - Seated (Max)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)	0.181" (4.60 mm)
Thermal Resistance	12°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W	8°C/W
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
MSL Rating	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)

Engineering Selection Recommendations

All listed XLamp® XR-E substitutes (XREWHT series) are active products with RoHS compliance and identical MSL ratings to the obsolete XRCWHT-L1-0000-00908. The substitution is supported by:

Electrical Performance: All substitute parts deliver the same 84 lm flux output at 350 mA test current with improved efficiency (73 lm/W vs. 69 lm/W). The 0.2V reduction in forward voltage (3.3V vs. 4.6V) results in lower power dissipation and improved thermal performance.

Thermal Advantage: XLamp® XR-E variants feature 8°C/W thermal resistance compared to 12°C/W in the XR-C, enabling better heat dissipation in high-density applications.

Mechanical Compatibility: Identical 3529 package dimensions, mounting type, and height ensure direct PCB footprint compatibility without layout modifications.

Regulatory Compliance: All substitute parts maintain RoHS compliance and REACH unaffected status, meeting current environmental standards.

Product Availability: All XLamp® XR-E variants are active products with confirmed inventory, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-00908 directly replace XRCWHT-L1-0000-00908 on existing PCBs?

A: Yes. Both parts use the 3529 (9073 Metric) package with identical footprint dimensions (0.354" L × 0.276" W, 0.181" max height). No PCB layout changes are required. The 0.2V forward voltage difference (4.6V to 3.3V) is within typical circuit design margins for LED driver circuits.

Q: What is the difference between XREWHT-L1-0000-00901 and other XREWHT substitutes?

A: XREWHT-L1-0000-00901 specifies a color temperature range of 5000K–10000K (cool white), while other XREWHT variants do not specify CCT. All variants maintain identical flux output (84 lm), forward voltage (3.3V), and package specifications. Selection depends on application color temperature requirements.

Q: Are there any thermal design considerations when switching from XR-C to XR-E?

A: The improved thermal resistance of XR-E (8°C/W vs. 12°C/W) allows for higher current operation or better performance in thermally constrained environments. Existing thermal designs will benefit from reduced junction temperature at equivalent operating currents.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All XREWHT variants carry MSL 4 (72 Hours) rating, identical to the original XRCWHT part. Storage and handling procedures remain unchanged.

Q: Which substitute part should be selected for new designs?

A: Any active XREWHT variant meets the electrical and mechanical requirements. Selection should be based on specific color temperature needs (XREWHT-L1-0000-00901 for cool white specification) or inventory availability. All parts are functionally equivalent for the 84 lm, 350 mA operating point.

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