XRCWHT-L1-0000-00A37 LED XLamp® XR-C White Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-00A37 is a CreeLED XLamp® XR-C white surface mount LED in 3529 (9073 Metric) package configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, which maintains electrical and mechanical compatibility while offering improved thermal performance and active product status.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-L1-0000-00A37
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	91 lm (87–94 lm range)
Forward Voltage (Vf) Typical	4.6V
Test Current	350 mA
Maximum Current	500 mA
Lumens per Watt @ 350mA	74 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
Moisture Sensitivity Level (MSL)	4 (72 Hours)
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of XRCWHT-L1-0000-00A37 is determined by the following critical parameters:

Electrical Compatibility:

Luminous flux at 25°C and 350 mA test current: 91 lm (87–94 lm range)
Viewing angle: 90°
Color: White
Mounting type: Surface Mount
Package / Case: 3529 (9073 Metric)
Physical dimensions: 0.354" L × 0.276" W (9.00 mm × 7.00 mm)
Height - Seated (Max): 0.181" (4.60 mm)

Mechanical Compatibility:

All substitute parts maintain identical package footprint and height specifications
All substitute parts are surface mount devices in the same 3529 (9073 Metric) package

Regulatory Compliance:

All substitute parts are RoHS Compliant
All substitute parts have REACH Unaffected status
All substitute parts maintain MSL 4 (72 Hours) rating

The XLamp® XR-E series substitutes listed below meet these criteria while offering improved thermal performance (8°C/W versus 12°C/W) and active product status.

Parameter Comparison

Parameter	XRCWHT-L1-0000-00A37 (Main)	XREWHT-L1-0000-00A01	XREWHT-L1-0000-00A05	XREWHT-L1-0000-00A07	XREWHT-L1-0000-00A08	XREWHT-L1-0000-00A09	XREWHT-L1-0000-00A10	XREWHT-L1-0000-00A37	XREWHT-L1-0000-00AB1	XREWHT-L1-0000-00AB2	XREWHT-L1-0000-00AB3
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
CCT (K)	—	5000K–10000K	—	—	—	—	—	—	—	—	—
Flux @ 25°C, 350mA	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)	91 lm (87–94 lm)
Forward Voltage (Vf) Typical	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 per Watt @ 350mA	74 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W	79 lm/W
CRI (Color Rendering Index)	—	75 (Typ)	—	—	—	—	—	—	—	—	—
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
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
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 are active products with full RoHS compliance and REACH unaffected status, ensuring regulatory continuity for new designs and production runs. The XLamp® XR-E series provides improved thermal performance with 8°C/W thermal resistance compared to the obsolete XLamp® XR-C at 12°C/W, enabling better heat dissipation in thermal-constrained applications.

Forward voltage differs between the main part (4.6V) and all XLamp® XR-E substitutes (3.3V). Circuit designs must accommodate this 0.2V reduction in typical forward voltage. The luminous flux output remains constant at 91 lm across all parts at 350 mA test current, maintaining optical performance equivalence.

All substitute parts maintain identical mechanical compatibility: 3529 (9073 Metric) package, 0.354" L × 0.276" W footprint, and 0.181" maximum seated height. Direct PCB footprint substitution is supported without layout modification.

XREWHT-L1-0000-00A01 is the only substitute with specified CRI of 75 (Typ) and defined CCT range of 5000K–10000K, providing color temperature specification for applications requiring color consistency documentation.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-00A37 directly replace XRCWHT-L1-0000-00A37 on existing PCBs?

A: Yes. Both parts share identical mechanical specifications: 3529 (9073 Metric) package, 0.354" L × 0.276" W footprint, and 0.181" maximum seated height. PCB layout modification is not required. However, circuit design must account for the 0.2V reduction in typical forward voltage (4.6V to 3.3V).

Q: What is the primary difference between XLamp® XR-C and XLamp® XR-E series?

A: The XLamp® XR-E series offers improved thermal performance with 8°C/W thermal resistance versus 12°C/W for XLamp® XR-C. All XLamp® XR-E substitutes are active products, while the XLamp® XR-C XRCWHT-L1-0000-00A37 is obsolete. Luminous flux output and viewing angle remain equivalent.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed XLamp® XR-E substitutes are RoHS Compliant with REACH Unaffected status, maintaining regulatory compliance for EU and global markets.

Q: Does forward voltage difference affect circuit design?

A: Yes. The main part operates at 4.6V typical forward voltage, while all XLamp® XR-E substitutes operate at 3.3V. Current-limiting resistor values and power supply voltage margins must be recalculated to maintain proper LED current at 350 mA test condition.

Q: What is the inventory status of substitute parts?

A: All listed XLamp® XR-E substitutes are in active production with confirmed inventory availability ranging from 612 to 1071 pieces in stock.

Q: Can I use XREWHT-L1-0000-00A01 when color temperature specification is required?

A: Yes. XREWHT-L1-0000-00A01 is the only substitute with specified CRI of 75 (Typ) and defined CCT range of 5000K–10000K. Other substitutes do not have published CCT specifications.

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