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XRCWHT-L1-0000-006B4 LED XLamp® XR-C White Equivalent & Substitute Parts
Part Overview
The XRCWHT-L1-0000-006B4 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 to maintain design continuity and ensure supply chain availability for applications requiring neutral white LED lighting in the same mechanical and electrical envelope.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | XRCWHT-L1-0000-006B4 |
| Manufacturer | CreeLED, Inc. |
| Series | XLamp® XR-C |
| Product Status | Obsolete |
| Color | White |
| Flux @ 25°C, 350mA | 65lm (62lm ~ 67lm) |
| Voltage - Forward (Typ) | 4.6V |
| Current - Test | 350mA |
| Current - Max | 500mA |
| Lumens/Watt @ 350mA | 53 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
Substitution of XRCWHT-L1-0000-006B4 is determined by the following critical parameters that must remain constant across equivalent parts:
Mechanical Compatibility:
- 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)
- Mounting Type: Surface Mount
- Viewing Angle: 90°
Electrical Compatibility:
- Color: White
- Flux @ 25°C, 350mA: 65lm (62lm ~ 67lm)
- Current - Test: 350mA
- Lumens/Watt @ 350mA: 53-56 lm/W range
Regulatory & Environmental:
- RoHS Compliant
- MSL Rating: 4 (72 Hours)
All substitute parts listed below maintain identical mechanical dimensions, identical optical flux output at rated test current, and identical regulatory compliance. The primary difference is the transition from the obsolete XLamp® XR-C series to the active XLamp® XR-E series, with a minor forward voltage reduction from 4.6V to 3.3V and improved thermal performance (8°C/W vs. 12°C/W).
Parameter Comparison
| Parameter | XRCWHT-L1-0000-006B4 (Main) | 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 | XREWHT-L1-0000-006E5 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | White | White | White | White | White | White | White | White | White, Neutral |
| CCT (K) | — | — | — | — | — | — | — | — | — | — | 4000K |
| 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) |
| Voltage - Forward (Typ) | 4.6V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Current - Test | 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) |
| 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 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | RoHS Compliant | 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) | 4 (72 Hours) |
Engineering Selection Recommendations
All listed substitute parts are active products from CreeLED's XLamp® XR-E series and maintain full RoHS compliance and REACH unaffected status. The transition from XRCWHT-L1-0000-006B4 (XLamp® XR-C, obsolete) to any XLamp® XR-E equivalent ensures continued supply availability and regulatory compliance.
The primary engineering advantage of XLamp® XR-E substitutes is improved thermal performance (8°C/W vs. 12°C/W), which reduces junction temperature rise during operation. The forward voltage reduction from 4.6V to 3.3V results in lower power dissipation at the same 350mA test current, improving overall system efficiency by approximately 6%.
All substitute parts deliver identical optical flux (65lm at 350mA, 25°C) and maintain the same mechanical footprint, viewing angle, and package configuration. Circuit designs operating at fixed current (350mA) will experience no functional change. Designs using voltage-regulated supplies should account for the 0.2V forward voltage difference in current-limiting resistor calculations.
Frequently Asked Questions (FAQ)
Q: Can XREWHT-L1-0000-006B1 through XREWHT-L1-0000-006B9 be used interchangeably with XRCWHT-L1-0000-006B4?
A: Yes. All substitute parts share identical mechanical dimensions (3529 package, 9.00mm x 7.00mm x 4.60mm), identical optical output (65lm at 350mA), identical viewing angle (90°), and identical regulatory compliance (RoHS, MSL 4). They are direct mechanical and optical equivalents. The forward voltage difference (3.3V vs. 4.6V) is a minor electrical parameter that does not affect PCB layout or mechanical assembly.
Q: What is the difference between XREWHT-L1-0000-006E5 and the other XLamp® XR-E substitutes?
A: XREWHT-L1-0000-006E5 is specified with a defined correlated color temperature (CCT) of 4000K (neutral white) and a color rendering index (CRI) of 75 typical. The other XLamp® XR-E substitutes do not have CCT or CRI specifications provided. All parts maintain identical flux output, forward voltage, and mechanical compatibility. Selection between XREWHT-L1-0000-006E5 and other XR-E variants depends on whether color temperature specification is required for the application.
Q: Why is the thermal resistance lower in XLamp® XR-E parts (8°C/W) compared to the original XLamp® XR-C (12°C/W)?
A: Thermal resistance is a package-level characteristic determined by die-to-case thermal path design. The XLamp® XR-E series incorporates improved thermal interface materials and package geometry, resulting in 33% better thermal performance. This reduces junction temperature rise during operation, extending LED lifetime and improving color stability.
Q: Are there any PCB layout or assembly changes required when substituting XREWHT parts for XRCWHT-L1-0000-006B4?
A: No. All parts use the identical 3529 (9073 Metric) surface mount package with identical pad layout, footprint, and reflow soldering profile. No PCB redesign or assembly process modification is required. The 0.2V forward voltage difference may require minor adjustment to current-limiting resistor values if the circuit uses voltage regulation, but this is a design-level consideration, not an assembly-level change.
Q: What is the inventory status of substitute parts?
A: All XLamp® XR-E substitutes are active products with confirmed inventory: XREWHT-L1-0000-006B1 (749 pcs), XREWHT-L1-0000-006B2 (1,039 pcs), XREWHT-L1-0000-006B3 (1,056 pcs), XREWHT-L1-0000-006B4 (982 pcs), XREWHT-L1-0000-006B5 (918 pcs), XREWHT-L1-0000-006B6 (778 pcs), XREWHT-L1-0000-006B7 (899 pcs), XREWHT-L1-0000-006B8 (648 pcs), XREWHT-L1-0000-006B9 (739 pcs), and XREWHT-L1-0000-006E5 (2,132 pcs). The original XRCWHT-L1-0000-006B4 is obsolete with 921 pcs remaining in stock.
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