Equivalent & Substitute Parts for XRCWHT-L1-0000-00509

Part Overview

The XRCWHT-L1-0000-00509 is a CreeLED XLamp® XR-C Cool White surface mount LED in 3529 (9073 Metric) package configuration. This part is classified as obsolete, making substitute parts necessary for ongoing production and design updates. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, which offers improved thermal characteristics and higher luminous efficacy while maintaining mechanical and electrical compatibility within defined parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-00509
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White
Flux @ 25°C, 350mA	59 lm (57–62 lm)
Forward Voltage (Vf) Typical	4.6V
Test Current	350mA
Maximum Current	500mA
Lumens/Watt @ 350mA	48 lm/W
Viewing Angle	90°
Package / Case	3529 (9073 Metric)
Mounting Type	Surface Mount
Size / Dimension	0.354" L × 0.276" W (9.00mm × 7.00mm)
Height - Seated (Max)	0.181" (4.60mm)
Thermal Resistance	12°C/W
RoHS Status	RoHS Compliant
MSL Rating	4 (72 Hours)

Substitute Part Grouping Explanation

Substitution of XRCWHT-L1-0000-00509 is determined by the following critical parameters:

Mechanical Compatibility:

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

Electrical Compatibility:

Test Current: 350mA nominal operation
Viewing Angle: 90°
Color: White
Flux output at 25°C, 350mA: 59 lm (57–62 lm range)

Regulatory & Environmental:

RoHS Compliance
MSL Rating: 4 (72 Hours)
REACH Status: REACH Unaffected

All substitute parts listed maintain identical mechanical footprint, identical flux output at test current, identical viewing angle, and identical regulatory compliance. The primary differences are forward voltage (3.3V vs. 4.6V), maximum current ratings, thermal resistance, and series designation (XLamp® XR-E vs. XLamp® XR-C). These differences do not affect PCB layout or mounting procedures.

Parameter Comparison

Parameter	XRCWHT-L1-0000-00509	XREWHT-L1-0000-00601	XREWHT-L1-0000-005B6	XREWHT-L1-0000-005B7	XREWHT-L1-0000-005B8	XREWHT-L1-0000-005B9	XREWHT-L1-R250-005B6	XREWHT-L1-R250-005B7	XREWHT-L1-R250-005B8	XREWHT-L1-R250-005B9
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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Color	White	White, Cool	White	White	White	White	White	White	White	White
Flux @ 25°C, 350mA	59 lm (57–62 lm)	65 lm (62–67 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 lm)	59 lm (57–62 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
Test Current	350mA	350mA	350mA	350mA	350mA	350mA	350mA	350mA	350mA	350mA
Maximum Current	500mA	1A	700mA	700mA	700mA	700mA	—	—	—	—
Lumens/Watt @ 350mA	48 lm/W	56 lm/W	51 lm/W	51 lm/W	51 lm/W	51 lm/W	51 lm/W	51 lm/W	51 lm/W	51 lm/W
Viewing Angle	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)
Size / Dimension	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)	0.354" L × 0.276" W (9.00mm × 7.00mm)
Height - Seated (Max)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)	0.181" (4.60mm)
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
RoHS Status	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)

Engineering Selection Recommendations

All listed substitute parts are active production components from CreeLED, Inc., ensuring long-term availability and supply chain stability. The XLamp® XR-E series substitutes provide improved thermal performance (8°C/W vs. 12°C/W) and higher luminous efficacy (51–56 lm/W vs. 48 lm/W), resulting in reduced thermal stress and improved energy efficiency in equivalent applications.

The forward voltage reduction from 4.6V to 3.3V requires driver circuit adjustment to maintain 350mA test current. This 0.2V difference is within typical LED driver compensation range and does not necessitate PCB redesign.

All substitute parts maintain RoHS compliance and identical MSL ratings, ensuring compatibility with existing manufacturing processes and storage protocols. The identical 3529 package footprint, mounting type, and physical dimensions enable direct PCB layout reuse without modification.

XREWHT-L1-0000-00601 offers the highest luminous efficacy (56 lm/W) and maximum current rating (1A), providing the greatest design flexibility for future current scaling. Parts designated with R250 suffix variants (XREWHT-L1-R250-005B6 through XREWHT-L1-R250-005B9) are functionally equivalent to their non-R250 counterparts but with unspecified maximum current ratings.

Frequently Asked Questions (FAQ)

Q: Can XRCWHT-L1-0000-00509 be directly replaced with XLamp® XR-E substitutes without circuit modification?

A: Direct PCB replacement is possible due to identical mechanical footprint and package dimensions. However, the forward voltage difference (4.6V vs. 3.3V) requires driver circuit adjustment to maintain 350mA test current. Existing current-limiting resistor values or PWM duty cycles must be recalculated for the lower forward voltage.

Q: What is the primary advantage of XLamp® XR-E substitutes over the obsolete XLamp® XR-C?

A: XLamp® XR-E parts provide improved thermal resistance (8°C/W vs. 12°C/W) and higher luminous efficacy (51–56 lm/W vs. 48 lm/W). These improvements reduce junction temperature rise and power dissipation in equivalent applications, extending LED lifespan and improving system reliability.

Q: Are all substitute parts identical in performance?

A: No. XREWHT-L1-0000-00601 delivers 65 lm at 350mA (vs. 59 lm for other substitutes) and supports 1A maximum current. Parts XREWHT-L1-0000-005B6 through 005B9 and their R250 variants deliver 59 lm at 350mA with maximum current ratings of 700mA or unspecified. Selection depends on flux output requirements and maximum current headroom needed for the application.

Q: Do substitute parts require PCB layout changes?

A: No. All substitute parts use the identical 3529 (9073 Metric) package with matching physical dimensions (0.354" L × 0.276" W, 0.181" max height). PCB footprints, solder pad patterns, and component spacing remain unchanged.

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

A: At 350mA test current, the 0.2V reduction (4.6V to 3.3V) decreases LED power dissipation by approximately 70mW per device. This reduction improves thermal performance and reduces overall system power consumption, particularly in high-density LED arrays.

Q: Are all substitute parts available in the same packaging format?

A: Substitute parts XREWHT-L1-0000-005B6 through 005B9 are supplied in Tape & Reel (TR) format. Parts with R250 designation (XREWHT-L1-R250-005B6 through 005B9) are also supplied in Tape & Reel format. Packaging format does not affect component electrical or mechanical specifications.

Q: What is the significance of the R250 designation in part numbers?

A: The R250 designation indicates a specific packaging or manufacturing variant. Functionally, R250 parts are equivalent to their non-R250 counterparts in electrical performance and mechanical compatibility. The primary difference is unspecified maximum current rating for R250 variants, whereas non-R250 parts specify 700mA maximum current.

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