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XRCWHT-L1-0000-006B6 LED XLamp® XR-C Warm White 2SMD Equivalent & Substitute Parts
Part Overview
The XRCWHT-L1-0000-006B6 is a CreeLED XLamp® XR-C warm 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 production continuity. The XR-C series has been superseded by the XR-E series, which maintains compatible electrical and mechanical specifications while offering active product status and improved thermal characteristics.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | XRCWHT-L1-0000-006B6 |
| Manufacturer | CreeLED, Inc. |
| Series | XLamp® XR-C |
| Product Status | Obsolete |
| Color | White |
| 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 |
| Viewing Angle | 90° |
| Package / Case | 3529 (9073 Metric) |
| Mounting Type | Surface Mount |
| 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
Substitution of the XRCWHT-L1-0000-006B6 is based on the following critical parameters that must remain constant or compatible:
Mechanical Compatibility:
- Package / Case: 3529 (9073 Metric) — identical across all substitutes
- Mounting Type: Surface Mount — identical across all substitutes
- Physical Dimensions: 0.354" L x 0.276" W (9.00mm x 7.00mm) — identical across all substitutes
- Height - Seated (Max): 0.181" (4.60mm) — identical across all substitutes
Electrical Compatibility:
- Flux @ 25°C, 350mA: 65lm (62lm ~ 67lm) — identical across all substitutes
- Test Current: 350mA — identical across all substitutes
- Viewing Angle: 90° — identical across all substitutes
- Color: White — maintained across all substitutes
Key Differences in Substitutes:
- Forward Voltage (Vf): Main part operates at 4.6V; all XR-E substitutes operate at 3.3V (0.2V reduction)
- Lumens/Watt Efficiency: Main part delivers 53 lm/W; all XR-E substitutes deliver 56 lm/W (improved efficiency)
- Thermal Resistance: Main part rated at 12°C/W; all XR-E substitutes rated at 8°C/W (improved thermal performance)
- Series: Main part is XLamp® XR-C; all substitutes are XLamp® XR-E
- Product Status: Main part is obsolete; all substitutes are active
All substitute parts maintain identical mechanical form factor, flux output, and test current specifications, ensuring direct PCB compatibility and equivalent optical performance.
Parameter Comparison
| Parameter | XRCWHT-L1-0000-006B6 (Main) | XREWHT-L1-0000-006AA | XREWHT-L1-0000-006B1 | XREWHT-L1-0000-006B2 | XREWHT-L1-0000-006B3 | XREWHT-L1-0000-006B4 | XREWHT-L1-0000-006B5 | XREWHT-L1-0000-006B6 | XREWHT-L1-0000-006B7 | XREWHT-L1-0000-006B8 | XREWHT-L1-0000-006B9 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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, Warm | White | White | White | White | White | White | White | White | White |
| CCT (K) | — | 2700K | — | — | — | — | — | — | — | — | — |
| Flux @ 25°C, 350mA | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) | 65lm (62–67lm) |
| 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 | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA | 350mA |
| Lumens/Watt @ 350mA | 53 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W | 56 lm/W |
| 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) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| 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) | 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) | 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 | 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 |
| 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) |
| REACH Status | REACH Unaffected | 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 XLamp® XR-E substitutes (XREWHT-L1-0000-006AA through XREWHT-L1-0000-006B9) are active products with RoHS compliance and REACH unaffected status, providing long-term supply assurance compared to the obsolete XRCWHT-L1-0000-006B6.
The primary design consideration is the forward voltage reduction from 4.6V to 3.3V in XR-E substitutes. This 0.2V difference requires circuit-level evaluation to confirm compatibility with existing current-limiting resistor networks and power supply specifications. The improved thermal resistance (8°C/W versus 12°C/W) and higher luminous efficacy (56 lm/W versus 53 lm/W) represent performance enhancements that do not negatively impact system operation.
All substitutes maintain identical mechanical form factor, flux output at rated current, and viewing angle, ensuring direct PCB compatibility without layout modifications. Moisture sensitivity level and compliance certifications remain unchanged across all parts.
Frequently Asked Questions (FAQ)
Q: Can XREWHT-L1-0000-006B series parts directly replace XRCWHT-L1-0000-006B6 on existing PCBs?
A: Yes, mechanically and optically. All XR-E substitutes use the identical 3529 (9073 Metric) package with matching dimensions and height. Electrical circuit validation is required due to the 0.2V forward voltage difference.
Q: What is the significance of the forward voltage difference between the main part and substitutes?
A: The main part operates at 4.6V typical; all XR-E substitutes operate at 3.3V typical. This difference affects the voltage drop across current-limiting resistors in the LED drive circuit. Designs using fixed resistor networks must be recalculated to maintain the 350mA test current specification.
Q: Are all XR-E substitutes electrically interchangeable?
A: Yes, within the XR-E series. All listed substitutes (XREWHT-L1-0000-006AA through XREWHT-L1-0000-006B9) share identical electrical specifications: 3.3V forward voltage, 350mA test current, 65lm flux output, and 56 lm/W efficiency. The primary difference is color temperature specification in XREWHT-L1-0000-006AA (2700K warm white).
Q: What is the impact of improved thermal resistance in XR-E parts?
A: XR-E substitutes feature 8°C/W thermal resistance compared to 12°C/W in the main part. This 33% improvement in thermal performance reduces junction temperature rise under identical operating conditions, extending LED lifetime and improving reliability.
Q: Do packaging and moisture sensitivity requirements change with substitution?
A: No. All parts maintain MSL 4 (72 Hours) classification and identical RoHS compliance. Handling, storage, and reflow procedures remain unchanged.
Q: Which substitute part should be selected if color temperature is critical?
A: XREWHT-L1-0000-006AA specifies 2700K warm white color temperature. Other XR-E substitutes do not specify CCT in the provided data. If warm white color temperature is required, XREWHT-L1-0000-006AA is the appropriate selection.
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