LED XLAMP WARM WHITE XRCWHT-L1-0000-004B7 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-004B7 is a CreeLED XLamp® XR-C warm white surface mount LED in 3529 (9073 Metric) package configuration. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and legacy system support where the original part is no longer readily available from primary sources.

Substiute Parts

XRCWHT-L1-0000-004B7

CreeLED, Inc.In Stock: 1218XRCWHT-L1-0000-004B7 Datasheet

Current PartRFQ

XREWHT-L1-0000-004E8

CreeLED, Inc.In Stock: 1113XREWHT-L1-0000-004E8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XRCWHT-L1-0000-004B7 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Mechanical Compatibility:

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

Electrical Compatibility:

• Color: White (warm white spectrum)
• Flux @ 25°C, 350mA: 54lm (52lm ~ 57lm)
• Test Current: 350mA
• Viewing Angle: 90°
• Forward Voltage (Vf) range: 3.3V to 4.6V

Regulatory & Environmental:

• RoHS Compliant
• Moisture Sensitivity Level (MSL): 4 (72 Hours)

The XREWHT-L1-0000-004E8 qualifies as a substitute based on matching package dimensions, identical flux output at test current, compatible forward voltage, and equivalent viewing angle. Both components share the same thermal and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-004E8 is the qualified substitute for the obsolete XRCWHT-L1-0000-004B7. Selection is based on the following engineering criteria:

Product Status: The XREWHT-L1-0000-004E8 maintains Active product status, ensuring continued availability and manufacturing support from CreeLED, Inc., whereas the original part is classified as Obsolete.

Regulatory Compliance: Both components are RoHS Compliant and carry identical Moisture Sensitivity Level (MSL) ratings of 4 (72 Hours), ensuring equivalent handling and storage requirements.

Electrical Performance: The substitute part delivers identical luminous flux output (54lm at 350mA test current) and maintains the same 90° viewing angle. Forward voltage differs by 0.2V (3.3V vs. 4.6V), which is within acceptable tolerance for most LED driver circuits designed for warm white LEDs.

Mechanical Compatibility: Both components use identical 3529 (9073 Metric) surface mount packages with matching physical dimensions and maximum seated height, ensuring direct PCB footprint compatibility without layout modifications.

Thermal Performance: The substitute part offers improved thermal resistance (8°C/W vs. 12°C/W), providing superior heat dissipation characteristics.

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-004E8 be used as a direct replacement for the XRCWHT-L1-0000-004B7 without PCB modifications?

A: Yes. Both components share identical package dimensions (3529 / 9073 Metric), mounting type (Surface Mount), and physical footprint specifications. No PCB layout changes are required for mechanical compatibility.

Q: What is the difference in forward voltage between these two parts?

A: The XRCWHT-L1-0000-004B7 has a typical forward voltage of 4.6V, while the XREWHT-L1-0000-004E8 operates at 3.3V. This 0.2V difference is typical between XLamp® XR-C and XR-E series components and should be accommodated by standard LED driver circuits.

Q: Do both parts have the same luminous flux output?

A: Yes. Both components deliver 54lm (52lm ~ 57lm) at 350mA test current and 25°C ambient temperature, ensuring equivalent light output performance.

Q: What are the key differences between these substitute parts?

A: The primary differences are: (1) Product Status—the substitute is Active versus Obsolete; (2) Series—XR-E versus XR-C; (3) CCT specification—the substitute is rated at 2700K warm white; (4) CRI—the substitute specifies 80 (Typ); (5) Maximum current rating—700mA versus 500mA; (6) Thermal resistance—8°C/W versus 12°C/W; (7) Lumens/Watt efficiency—47 lm/W versus 44 lm/W.

Q: Are there any compliance or environmental concerns when substituting these parts?

A: No. Both components are RoHS Compliant, carry identical Moisture Sensitivity Level (MSL) ratings of 4 (72 Hours), and share the same REACH and ECCN classifications. Handling, storage, and environmental requirements are equivalent.

Q: Which part should be selected for new designs?

A: The XREWHT-L1-0000-004E8 should be selected for new designs due to its Active product status, improved thermal performance, higher efficiency rating, and guaranteed long-term availability from CreeLED, Inc.