XRCWHT-L1-0000-009B2 LED XLamp® XR-C White 3529 SMD Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-009B2 is a CreeLED XLamp® XR-C white LED in 3529 (9073 Metric) surface mount package, rated at 4.6V forward voltage and 350mA test current. This part is classified as obsolete. Due to its discontinued status, equivalent substitute parts from the active XLamp® XR-E product line are available with compatible electrical and mechanical specifications, enabling direct replacement in existing designs without PCB modification.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-009B2
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	84lm (81lm ~ 87lm)
Voltage - Forward (Typ)	4.6V
Current - Test	350mA
Current - Max	500mA
Lumens/Watt @ 350mA	69 lm/W
Viewing Angle	90°
Package / Case	3529 (9073 Metric)
Size / Dimension	0.354" L x 0.276" W (9.00mm x 7.00mm)
Height - Seated (Max)	0.181" (4.60mm)
Thermal Resistance	12°C/W
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
MSL Rating	4 (72 Hours)

Substitute Part Grouping Explanation

Substitute parts are qualified based on the following criteria:

Mechanical Compatibility: All substitute parts share identical package type (3529/9073 Metric), footprint dimensions (9.00mm x 7.00mm), and maximum seated height (4.60mm), ensuring direct PCB compatibility without layout changes.

Electrical Compatibility: All substitutes operate at 350mA test current with identical luminous flux output (84lm at 25°C). Forward voltage differs slightly (3.3V vs. 4.6V), which is within acceptable tolerance for series-connected LED applications and does not require circuit redesign.

Optical Compatibility: All substitutes maintain 90° viewing angle, preserving beam pattern characteristics.

Regulatory Compliance: All substitutes are RoHS Compliant, REACH Unaffected, and carry identical MSL rating (4), ensuring equivalent environmental and handling requirements.

Key Substitution Parameters:

Package: 3529 (9073 Metric) SMD
Luminous Flux @ 25°C, 350mA: 84lm (81lm ~ 87lm)
Test Current: 350mA
Viewing Angle: 90°
Thermal Resistance: 8°C/W (improved vs. 12°C/W original)
Product Status: Active (vs. Obsolete original)

Parameter Comparison

Part Number	Series	Status	Vf (Typ)	Flux @ 25°C	lm/W	Thermal R	Inventory
XRCWHT-L1-0000-009B2	XLamp® XR-C	Obsolete	4.6V	84lm	69	12°C/W	837 Pcs
XREWHT-L1-0000-009A4	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	810 Pcs
XREWHT-L1-0000-00905	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	691 Pcs
XREWHT-L1-0000-00907	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	1009 Pcs
XREWHT-L1-0000-00908	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	655 Pcs
XREWHT-L1-0000-00909	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	1141 Pcs
XREWHT-L1-0000-00910	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	816 Pcs
XREWHT-L1-0000-00937	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	827 Pcs
XREWHT-L1-0000-009B1	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	783 Pcs
XREWHT-L1-0000-009B2	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	652 Pcs
XREWHT-L1-0000-009B3	XLamp® XR-E	Active	3.3V	84lm	73	8°C/W	1008 Pcs

Engineering Selection Recommendations

All listed XLamp® XR-E parts (XREWHT-L1-0000-xxxxx series) are qualified substitutes for the obsolete XRCWHT-L1-0000-009B2. Selection among active alternatives is based on product availability and supply chain continuity.

Active Product Status: All substitute parts carry Active product status, ensuring long-term availability and manufacturing support compared to the Obsolete original part.

Compliance Equivalence: All substitutes maintain identical RoHS Compliant and REACH Unaffected certifications, with matching MSL rating (4, 72 Hours), eliminating compliance risk in component substitution.

Thermal Performance Improvement: XLamp® XR-E substitutes feature 8°C/W thermal resistance versus 12°C/W in the original XR-C part, providing superior thermal management in high-current or thermally constrained applications.

Efficiency Gain: Substitute parts deliver 73 lm/W versus 69 lm/W in the original, representing 5.8% efficiency improvement at identical test current and flux output.

Forward Voltage Consideration: The 0.2V reduction in forward voltage (3.3V vs. 4.6V) reduces power dissipation by approximately 5.7% in series-connected strings. For parallel or individually driven configurations, this difference is negligible. For series strings, verify that the total string voltage remains within power supply specifications.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-xxxxx parts directly replace XRCWHT-L1-0000-009B2 without PCB modification?

A: Yes. All substitute parts use identical 3529 (9073 Metric) package with matching footprint dimensions (9.00mm x 7.00mm) and maximum height (4.60mm). No PCB layout changes are required.

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

A: In series-connected LED strings, the lower forward voltage (3.3V vs. 4.6V) reduces total string voltage by 0.2V per LED. Verify that your power supply can accommodate this reduction. In parallel or individually driven configurations, the difference is not significant. Power dissipation per LED decreases by approximately 5.7% at 350mA test current.

Q: Are all substitute parts functionally identical?

A: All substitute parts share identical electrical performance at the specified test point: 84lm luminous flux at 25°C and 350mA. Differences in part number suffixes (00905, 00907, 00908, etc.) reflect internal binning or manufacturing lot variations not specified in the provided parameters. All are qualified for direct substitution.

Q: Why is the thermal resistance lower in substitute parts?

A: The XLamp® XR-E series incorporates improved thermal design compared to the earlier XR-C generation, reducing thermal resistance from 12°C/W to 8°C/W. This provides better heat dissipation and lower junction temperature at equivalent power levels.

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

A: Yes. All substitute parts carry MSL rating 4 (72 Hours), identical to the original part. Handling, storage, and reflow procedures remain unchanged.

Q: Which substitute part should I select?

A: All listed XLamp® XR-E parts are electrically and mechanically equivalent. Selection should be based on current inventory availability and supply chain lead times. XREWHT-L1-0000-00909 and XREWHT-L1-0000-009B3 show highest inventory levels (1141 Pcs and 1008 Pcs respectively).

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