XRCWHT-L1-0000-00737 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-00737 is a CreeLED XLamp® XR-C white surface mount LED in 3529 (9073 Metric) package configuration. This component is classified as obsolete product status. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, necessitating equivalent substitute identification for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-00737
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	71 lm (67–74 lm range)
Forward Voltage (Vf) Typical	4.6V
Test Current	350 mA
Maximum Current	500 mA
Lumens/Watt @ 350mA	58 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-L1-0000-00737 is determined by the following critical parameters:

Mechanical Compatibility:

Package / Case: 3529 (9073 Metric) — all substitute parts maintain identical package footprint and mounting interface
Mounting Type: Surface Mount — all substitutes are surface mount compatible
Physical dimensions and height — all substitutes match seated height of 4.60 mm maximum

Electrical Compatibility:

Flux output @ 25°C, 350mA test current: 71 lm (67–74 lm range) — all substitutes deliver equivalent luminous flux within specification
Viewing Angle: 90° — all substitutes maintain identical beam pattern
Test current: 350 mA — all substitutes are rated for 350 mA operation

Regulatory & Environmental:

RoHS Compliance: All substitutes are RoHS Compliant
REACH Status: All substitutes are REACH Unaffected
Moisture Sensitivity Level: All substitutes are MSL 4 (72 Hours)

The substitute parts listed below are from the XLamp® XR-E series, which represents the active product line replacement for the obsolete XLamp® XR-C series. All substitutes maintain identical package geometry, electrical performance envelope, and regulatory compliance.

Parameter Comparison

Parameter	XRCWHT-L1-0000-00737 (Main)	XREWHT-L1-0000-00801	XREWHT-L1-0000-007B1	XREWHT-L1-0000-007B2	XREWHT-L1-0000-007B3	XREWHT-L1-0000-007B4	XREWHT-L1-0000-007B5	XREWHT-L1-0000-007B6	XREWHT-L1-0000-007B7	XREWHT-L1-0000-007B8	XREWHT-L1-0000-007B9
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	71 lm (67–74 lm)	77 lm (74–81 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 lm)	71 lm (67–74 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
Maximum Current	500 mA	1 A	—	—	—	—	—	—	—	—	—
Lumens/Watt @ 350mA	58 lm/W	67 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 lm/W	61 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
Moisture Sensitivity Level (MSL)	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)
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

Engineering Selection Recommendations

All listed substitute parts are from the active XLamp® XR-E product line and maintain full regulatory compliance with RoHS and REACH requirements. The XLamp® XR-E series represents the current generation replacement for the obsolete XLamp® XR-C series.

Primary Substitute: XREWHT-L1-0000-007B1, XREWHT-L1-0000-007B2, XREWHT-L1-0000-007B3, XREWHT-L1-0000-007B4, XREWHT-L1-0000-007B5, XREWHT-L1-0000-007B6, XREWHT-L1-0000-007B7, XREWHT-L1-0000-007B8, and XREWHT-L1-0000-007B9 are parametric equivalents with identical flux output (71 lm at 350 mA), viewing angle (90°), and package geometry. These parts feature improved thermal resistance (8°C/W versus 12°C/W) and are actively manufactured.

Alternative Substitute: XREWHT-L1-0000-00801 offers higher flux output (77 lm at 350 mA) and extended maximum current rating (1 A), providing enhanced performance headroom for applications requiring increased luminous intensity or thermal margin.

All substitutes are surface mount compatible with 3529 (9073 Metric) package footprints and maintain identical MSL 4 (72 Hours) moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-007B1 through 007B9 be used as direct replacements for XRCWHT-L1-0000-00737?

A: Yes. These parts are parametric equivalents with identical luminous flux (71 lm at 350 mA), viewing angle (90°), and package footprint (3529 / 9073 Metric). The primary difference is forward voltage: XR-E parts operate at 3.3V typical versus 4.6V for the XR-C part. Circuit designs must accommodate this 0.2V reduction in forward voltage.

Q: What is the difference between XREWHT-L1-0000-00801 and the other XR-E substitutes?

A: XREWHT-L1-0000-00801 delivers higher luminous flux (77 lm versus 71 lm at 350 mA) and supports maximum current of 1 A versus unspecified maximum current for other XR-E variants. This part is suitable for applications requiring increased brightness or thermal performance margin.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All listed substitute parts are RoHS Compliant and REACH Unaffected, maintaining regulatory equivalence with the original XRCWHT-L1-0000-00737.

Q: What is the thermal resistance difference between the main part and substitutes?

A: The XRCWHT-L1-0000-00737 has thermal resistance of 12°C/W, while all XLamp® XR-E substitutes have thermal resistance of 8°C/W. This represents improved thermal performance in the substitute parts.

Q: Are the package dimensions identical across all parts?

A: Yes. All parts use the 3529 (9073 Metric) package with identical dimensions: 0.354" L × 0.276" W (9.00 mm × 7.00 mm) and maximum seated height of 0.181" (4.60 mm). PCB footprints and assembly processes are fully compatible.

Q: What is the moisture sensitivity level for all parts?

A: All parts are classified as MSL 4 (72 Hours), indicating identical moisture handling and storage requirements.

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