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XRCWHT-L1-0000-007B4 LED XLamp® XR-C White 3529 SMD Equivalent & Substitute Parts
Part Overview
The XRCWHT-L1-0000-007B4 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, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The XLamp® XR-C series has been superseded by the XLamp® XR-E series, which maintains compatible electrical and mechanical specifications while offering active product status and improved thermal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-L1-0000-007B4 |
| Manufacturer | CreeLED, Inc. |
| Series | XLamp® XR-C |
| Product Status | Obsolete |
| Color | White |
| Flux @ 25°C, 350mA | 71lm (67lm ~ 74lm) |
| Forward Voltage (Vf) Typical | 4.6V |
| Test Current | 350mA |
| Maximum Current | 500mA |
| Lumens/Watt @ 350mA | 58 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 |
| MSL Rating | 4 (72 Hours) |
| RoHS Status | RoHS Compliant |
Substitute Part Grouping Explanation
Substitution of the XRCWHT-L1-0000-007B4 is determined by the following critical parameters:
Electrical Compatibility:
- Flux output at 25°C and 350mA test current: 71lm (67lm ~ 74lm)
- Viewing angle: 90°
- Color: White
- Lumens per watt efficiency: 58 lm/W minimum
Mechanical Compatibility:
- Package / Case: 3529 (9073 Metric)
- Physical dimensions: 0.354" L x 0.276" W (9.00mm x 7.00mm)
- Height - Seated (Max): 0.181" (4.60mm)
- Mounting type: Surface Mount
Operational Compatibility:
- Test current: 350mA
- Moisture Sensitivity Level: 4 (72 Hours)
- RoHS Compliance: Required
All substitute parts listed maintain identical package geometry, footprint, and mounting characteristics, ensuring direct PCB compatibility. The XLamp® XR-E series substitutes provide equivalent luminous flux output and viewing angle while operating at 3.3V forward voltage, representing a 0.2V reduction from the original XR-C specification. This voltage differential is within typical circuit design tolerance for LED driver circuits and does not require redesign of standard current-limiting resistor networks.
Parameter Comparison
| Parameter | XRCWHT-L1-0000-007B4 (Original) | XREWHT-L1-0000-007B1 | XREWHT-L1-0000-007B2 | XREWHT-L1-0000-007B3 | XREWHT-L1-0000-007B4 | XREWHT-L1-0000-007B5 | XREWHT-L1-0000-007B6 | XREWHT-L1-0000-007B7 | XREWHT-L1-0000-007B8 | XREWHT-L1-0000-007B9 | XREWHT-L1-0000-007A4 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Vf (Typ) | 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 |
| Flux @ 25°C, 350mA | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) | 71lm (67-74lm) |
| Lumens/Watt @ 350mA | 58 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 lm/W | 61 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 |
| 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) |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
| 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 are active products with full manufacturing support and documented compliance certifications. The transition from XLamp® XR-C to XLamp® XR-E represents a standard product line evolution within CreeLED's portfolio, with both series maintaining identical package geometry and footprint compatibility.
Primary Substitutes (Parametric Equivalents): XREWHT-L1-0000-007B1, XREWHT-L1-0000-007B2, XREWHT-L1-0000-007B3, XREWHT-L1-0000-007B4, XREWHT-L1-0000-007B5, XREWHT-L1-0000-007B6, XREWHT-L1-0000-007B7, XREWHT-L1-0000-007B8, and XREWHT-L1-0000-007B9 are direct parametric equivalents. These parts deliver identical luminous flux output (71lm at 350mA) and maintain the same 90° viewing angle. The 0.2V reduction in forward voltage (3.3V vs. 4.6V) results in improved thermal efficiency, reflected in the reduced thermal resistance (8°C/W vs. 12°C/W). All parts carry RoHS Compliance and REACH Unaffected certifications.
Secondary Substitute (Color Temperature Variant): XREWHT-L1-0000-007A4 is specified as neutral white (4000K CCT) and maintains all electrical and mechanical compatibility parameters. This part is suitable for applications requiring defined color temperature specification while preserving luminous output and thermal characteristics.
Inventory Availability: All substitute parts maintain active production status with documented inventory levels ranging from 725 to 1,130 units, ensuring supply chain continuity for new designs and production support.
Frequently Asked Questions (FAQ)
Q: Can XREWHT-L1-0000-007B series parts directly replace XRCWHT-L1-0000-007B4 without circuit modification?
A: Yes. The XLamp® XR-E substitutes maintain identical package geometry (3529 / 9073 Metric), footprint dimensions (9.00mm x 7.00mm), and height (4.60mm). The 0.2V forward voltage reduction (3.3V vs. 4.6V) is within standard LED driver circuit tolerance and does not require resistor network redesign for typical current-limiting applications at 350mA test current.
Q: What is the significance of the thermal resistance improvement from 12°C/W to 8°C/W?
A: The improved thermal resistance in XLamp® XR-E parts indicates more efficient heat dissipation from the LED junction to the PCB. This results in lower junction temperature at equivalent drive currents, extending operational life and improving luminous output stability across the specified temperature range.
Q: Are all substitute parts RoHS and REACH compliant?
A: Yes. All listed substitute parts carry RoHS Compliance and REACH Unaffected certifications, matching the compliance profile of the original XRCWHT-L1-0000-007B4.
Q: What is the difference between the various XREWHT-L1-0000-007Bx part numbers?
A: All XREWHT-L1-0000-007Bx variants (B1 through B9) are parametrically equivalent with identical electrical specifications (3.3V, 350mA, 71lm output, 90° viewing angle) and mechanical packaging. The suffix designations reflect internal CreeLED manufacturing binning or production lot differentiation and do not affect functional performance or interchangeability.
Q: Is XREWHT-L1-0000-007A4 (4000K neutral white) interchangeable with the original part?
A: XREWHT-L1-0000-007A4 is electrically and mechanically compatible and delivers equivalent luminous flux (71lm at 350mA). The primary difference is the defined color temperature specification (4000K neutral white). Selection depends on application color temperature requirements. If the original design does not specify color temperature, this part is functionally equivalent.
Q: What is MSL 4 (72 Hours) and why is it relevant?
A: Moisture Sensitivity Level 4 indicates the component requires controlled storage conditions and has a 72-hour floor life after moisture barrier bag opening. All substitute parts maintain identical MSL rating, ensuring equivalent handling and storage requirements in manufacturing environments.
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