XRCWHT-L1-0000-003B3 Equivalent & Substitute Parts

Part Overview

The XRCWHT-L1-0000-003B3 is a CreeLED XLamp® XR-C neutral white LED in 3529 (9073 Metric) surface mount package. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The part delivers 49 lm at 350mA test current with a forward voltage of 4.6V and 90° viewing angle, suitable for general illumination and indicator applications requiring neutral white output.

Substiute Parts

XRCWHT-L1-0000-003B3

CreeLED, Inc.In Stock: 772XRCWHT-L1-0000-003B3 Datasheet

Current PartRFQ

XREWHT-L1-0000-005F5

CreeLED, Inc.In Stock: 937XREWHT-L1-0000-005F5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete XRCWHT-L1-0000-003B3 is determined by the following critical parameters:

• Package Compatibility: Both parts must use the 3529 (9073 Metric) surface mount package with identical footprint dimensions (9.00mm × 7.00mm) and maximum seated height (4.60mm)
• Electrical Operating Range: Test current of 350mA and forward voltage tolerance must support existing circuit designs
• Optical Output: Flux output at 350mA test current must fall within acceptable range for the application
• Color Specification: Neutral white output required
• Viewing Angle: 90° viewing angle maintained across substitution
• Compliance: RoHS compliance and MSL rating must be maintained

The XREWHT-L1-0000-005F5 qualifies as a direct substitute based on matching package geometry, identical viewing angle, compatible electrical parameters at 350mA operation, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The XREWHT-L1-0000-005F5 is the qualified substitute for the obsolete XRCWHT-L1-0000-003B3 based on the following factors:

• Active Product Status: The substitute part is in active production, ensuring long-term availability and supply chain continuity
• Identical Package Geometry: Both parts use the 3529 (9073 Metric) package with matching footprint and height specifications, enabling direct PCB layout compatibility without redesign
• Compliance Alignment: Both parts maintain RoHS compliance and identical MSL rating (4, 72 Hours), satisfying regulatory and manufacturing requirements
• Electrical Compatibility: Forward voltage difference of 0.2V (4.6V vs. 3.3V) and test current match (350mA) are within typical circuit tolerance ranges for LED applications
• Improved Thermal Performance: The substitute exhibits lower thermal resistance (8°C/W vs. 12°C/W), providing enhanced thermal management in the same package footprint
• Enhanced Optical Output: Higher flux output (59 lm vs. 49 lm at 350mA) and improved efficiency (51 lm/W vs. 40 lm/W) deliver superior performance in the same electrical operating point

Frequently Asked Questions (FAQ)

Q: Can the XREWHT-L1-0000-005F5 be used as a direct replacement without circuit modification?

A: Yes. Both parts operate at 350mA test current with compatible forward voltages (4.6V vs. 3.3V). The 0.2V difference is within standard LED circuit tolerance. Identical package geometry and footprint enable direct PCB substitution.

Q: What is the impact of the higher flux output (59 lm vs. 49 lm) on circuit performance?

A: The substitute delivers approximately 20% higher luminous flux at the same 350mA operating current. Circuit designs must accommodate this increased optical output. If constant brightness is required, current can be reduced proportionally, or optical design must account for the higher output.

Q: Are there differences in color characteristics between the two parts?

A: The main part specifies neutral white without CCT definition. The substitute specifies 4300K neutral white with 75 CRI (typical). The substitute provides defined color temperature and color rendering specifications, which may affect visual appearance in color-critical applications.

Q: Does the improved thermal resistance (8°C/W vs. 12°C/W) require circuit changes?

A: No. Lower thermal resistance is beneficial and does not require circuit modification. The substitute dissipates heat more efficiently in the same package, improving reliability and thermal margin in the application.

Q: Are both parts suitable for the same environmental and storage conditions?

A: Yes. Both parts share identical MSL rating (4, 72 Hours) and RoHS compliance status, indicating equivalent moisture sensitivity and environmental handling requirements.

Q: What is the maximum current rating difference, and does it affect substitution?

A: The main part is rated to 500mA maximum; the substitute to 700mA maximum. At the standard 350mA operating point, this difference is not relevant. The higher maximum rating provides additional design margin in the substitute.