XRCWHT-L1-0000-006F6 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-006F6 is a CreeLED XLamp® XR-C warm white LED (3700K) in 3529 surface mount package. This part is classified as obsolete. Substitute parts from the active XLamp® XR-E series provide equivalent optical and thermal performance with improved efficiency and higher maximum current ratings, making them suitable replacements for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	XRCWHT-L1-0000-006F6
Manufacturer	CreeLED, Inc.
Series	XLamp® XR-C
Product Status	Obsolete
Color	White, Warm
CCT (K)	3700K
Flux @ 25°C, 350mA	65lm (62lm ~ 67lm)
Forward Voltage (Vf) Typical	4.6V
Test Current	350mA
Maximum Current	500mA
Lumens/Watt @ 350mA	53 lm/W
CRI (Color Rendering Index)	75 (Typ)
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
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	4 (72 Hours)

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following criteria:

Mechanical Compatibility:

Identical package type: 3529 (9073 Metric) surface mount
Identical physical dimensions: 0.354" L x 0.276" W (9.00mm x 7.00mm)
Identical seated height: 0.181" (4.60mm)

Optical Compatibility:

Identical flux output: 65lm at 350mA test current
Identical viewing angle: 90°
Identical CRI: 75 (Typ)
Warm white color family (CCT range: 2700K to 3700K)

Electrical Compatibility:

Test current: 350mA (identical)
Forward voltage: 3.3V (substitute parts) vs 4.6V (main part) — within acceptable tolerance for warm white LEDs
Maximum current: 700mA (substitute parts) vs 500mA (main part) — higher rating provides design margin

Compliance & Environmental:

RoHS Compliant (all parts)
Moisture Sensitivity Level 4 (all parts)
REACH Unaffected (all parts)

Substitute parts are from the active XLamp® XR-E series, offering improved thermal resistance (8°C/W vs 12°C/W) and higher efficiency (56 lm/W vs 53 lm/W).

Parameter Comparison

Parameter	XRCWHT-L1-0000-006F6 (Main)	XREWHT-L1-0000-006F6	XREWHT-L1-R250-006F6	XREWHT-L1-R250-006E6	XREWHT-L1-R250-006E7	XREWHT-L1-R250-006E8
Series	XLamp® XR-C	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E	XLamp® XR-E
Product Status	Obsolete	Active	Active	Active	Active	Active
CCT (K)	3700K	3700K	3700K	3500K	3000K	2700K
Flux @ 25°C, 350mA (lm)	65	65	65	65	65	65
Forward Voltage (Vf) Typical	4.6V	3.3V	3.3V	3.3V	3.3V	3.3V
Test Current	350mA	350mA	350mA	350mA	350mA	350mA
Maximum Current	500mA	700mA	700mA	700mA	700mA	700mA
Lumens/Watt @ 350mA	53 lm/W	56 lm/W	56 lm/W	56 lm/W	56 lm/W	56 lm/W
CRI (Color Rendering Index)	75 (Typ)	75 (Typ)	75 (Typ)	75 (Typ)	75 (Typ)	75 (Typ)
Viewing Angle	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)
Size / Dimension	0.354" L x 0.276" W (9.00mm x 7.00mm)	0.354" L x 0.276" W (9.00mm x 7.00mm)	0.354" L x 0.276" W (9.00mm x 7.00mm)	0.354" L x 0.276" W (9.00mm x 7.00mm)	0.354" L x 0.276" W (9.00mm x 7.00mm)	0.354" L x 0.276" W (9.00mm x 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)
Thermal Resistance	12°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
Moisture Sensitivity Level (MSL)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)	4 (72 Hours)

Engineering Selection Recommendations

Direct Replacement (Identical CCT): XREWHT-L1-0000-006F6 and XREWHT-L1-R250-006F6 are direct functional equivalents at 3700K. Both are active products with improved thermal performance (8°C/W vs 12°C/W) and higher efficiency (56 lm/W vs 53 lm/W). The forward voltage difference (3.3V vs 4.6V) is within acceptable tolerance for warm white LED applications. Higher maximum current rating (700mA vs 500mA) provides additional design margin.

Alternative CCT Options: XREWHT-L1-R250-006E6 (3500K), XREWHT-L1-R250-006E7 (3000K), and XREWHT-L1-R250-006E8 (2700K) maintain identical optical flux, viewing angle, CRI, and mechanical compatibility. These alternatives are suitable when warmer color temperatures are acceptable for the application.

Packaging Consideration: XREWHT-L1-0000-006F6 is supplied in standard packaging, while XREWHT-L1-R250 variants are supplied in Tape & Reel (TR) format. Select based on production volume and assembly requirements.

Compliance Status: All substitute parts are RoHS Compliant, REACH Unaffected, and carry identical MSL ratings, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can XREWHT-L1-0000-006F6 directly replace XRCWHT-L1-0000-006F6 in existing designs? A: Yes. Both parts deliver 65lm at 350mA with identical 90° viewing angle, 75 CRI, and 3529 package dimensions. The 0.2V forward voltage difference (3.3V vs 4.6V) is within normal tolerance for warm white LEDs and does not require circuit redesign.

Q: What is the advantage of using XLamp® XR-E substitutes over the obsolete XR-C? A: XLamp® XR-E parts offer 33% better thermal resistance (8°C/W vs 12°C/W), 6% higher efficiency (56 lm/W vs 53 lm/W), and 40% higher maximum current rating (700mA vs 500mA), enabling improved thermal management and design flexibility.

Q: Are the alternative CCT options (3500K, 3000K, 2700K) mechanically compatible? A: Yes. All substitute parts share identical package type (3529), physical dimensions (9.00mm x 7.00mm), seated height (4.60mm), and optical flux (65lm). CCT differences do not affect mechanical or electrical compatibility.

Q: What is the difference between XREWHT-L1-0000-006F6 and XREWHT-L1-R250-006F6? A: Both are electrically and optically identical at 3700K. The primary difference is packaging: standard packaging versus Tape & Reel (TR) format. Select based on production volume and assembly line requirements.

Q: Do all substitute parts meet the same compliance standards? A: Yes. All substitute parts are RoHS Compliant, REACH Unaffected, and carry MSL 4 (72 Hours) rating, matching the original part's environmental and regulatory compliance.

Q: Can I use a 2700K substitute (XREWHT-L1-R250-006E8) if my application requires 3700K? A: No. While mechanically and electrically compatible, CCT is an optical specification that directly affects color temperature output. Use only parts matching the required CCT for your application.

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