SPMWHT541MD5WAQMSD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAQMSD is a Samsung Semiconductor LM561B series cool white LED (5700K) designed for surface mount lighting applications. This component features a 5630 package format with 4-SMD flat lead exposed pad configuration, delivering 35 lumens at 65mA test current with 120° viewing angle.

The SPMWHT541MD5WAQMSD carries a "Not For New Designs" product status, indicating Samsung has transitioned this model to end-of-life. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and component sourcing continuity.

Substiute Parts

SPMWHT541MD5WAQMSD

Samsung Semiconductor, Inc.In Stock: 1042SPMWHT541MD5WAQMSD Datasheet

Current PartRFQ

SPMWHT541MP5WAQ0S5

Samsung Semiconductor, Inc.In Stock: 1106SPMWHT541MP5WAQ0S5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAQMSD is determined by the following critical parameters:

Primary Matching Criteria:

• Series family: LM561B or LM561B Plus
• Color and CCT: White, Cool 5700K
• Package type: 5630 (4-SMD configuration)
• Mounting type: Surface Mount
• Viewing angle: 120°
• Forward voltage: 2.95V (typical)
• Test current: 65mA
• Compliance: RoHS Compliant, MSL 2A

Acceptable Variation Ranges:

• Flux output @ 25°C, 65mA: 33–37 lm range
• Maximum current rating: Equal to or greater than 150mA
• Thermal resistance: Within ±1°C/W of specified value
• Height seated (max): Within ±0.10mm of specified dimension

The substitute part SPMWHT541MP5WAQ0S5 qualifies as a direct equivalent based on matching all primary criteria and operating within acceptable variation ranges for flux output and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

SPMWHT541MP5WAQ0S5 as Primary Substitute:

The SPMWHT541MP5WAQ0S5 is the qualified equivalent for the SPMWHT541MD5WAQMSD. Selection of this substitute is supported by the following factors:

1. Product Status: The substitute carries Active product status, ensuring continued availability and manufacturing support, whereas the main part is designated Not For New Designs.

2. Electrical Compatibility: Both components operate at identical forward voltage (2.95V typical) and test current (65mA), with flux output within the acceptable 33–37 lm specification range. The substitute delivers 36 lm versus the main part's 35 lm, representing a 2.9% increase within tolerance.

3. Thermal Performance: The substitute exhibits superior thermal characteristics with 15°C/W thermal resistance compared to 16°C/W, providing improved heat dissipation.

4. Mechanical Fit: Both components share identical 5630 package dimensions (5.00 × 3.00 mm) and 120° viewing angle. The substitute height (0.80 mm seated max) is 0.10 mm lower than the main part (0.90 mm), which is within acceptable PCB assembly tolerances.

5. Compliance: Both components maintain RoHS compliance and identical MSL 2A (4 Weeks) moisture sensitivity ratings, ensuring equivalent handling and storage requirements.

6. Current Rating Enhancement: The substitute supports 180mA maximum current versus 150mA for the main part, providing additional operational margin without affecting nominal 65mA test conditions.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAQ0S5 be used as a direct drop-in replacement for SPMWHT541MD5WAQMSD?

A: Yes. Both components share identical electrical specifications at the 65mA test current (2.95V forward voltage, 35–36 lm output), matching 5630 package dimensions, and equivalent compliance certifications. The substitute is mechanically and electrically compatible for direct PCB substitution.

Q: What is the difference between "Flat Lead Exposed Pad" and "Flat Leads" package descriptions?

A: Both designations refer to 4-SMD surface mount configurations within the 5630 package family. The exposed pad variant (main part) includes a thermal pad for enhanced heat dissipation, while the flat leads variant (substitute) uses standard lead configuration. Both are compatible with standard reflow soldering processes and PCB layouts designed for 5630 packages.

Q: Why does the substitute part have a lower seated height (0.80 mm vs. 0.90 mm)?

A: The 0.10 mm height reduction in the substitute reflects manufacturing refinements in the LM561B Plus series. This difference is within standard PCB assembly tolerances and does not affect electrical performance or mechanical fit in applications designed for 5630 packages.

Q: Are there any thermal management differences between the main part and substitute?

A: The substitute exhibits improved thermal resistance (15°C/W vs. 16°C/W), indicating superior heat dissipation capability. This enhancement is beneficial for applications requiring extended operational life or higher ambient temperature environments, while maintaining full compatibility with existing thermal designs.

Q: What is the significance of the "Active" product status for the substitute?

A: Active product status indicates Samsung continues manufacturing and supporting SPMWHT541MP5WAQ0S5 for new and ongoing applications. This contrasts with the main part's "Not For New Designs" status, ensuring long-term component availability and supply chain stability for production environments.

Q: Do both parts require identical moisture handling procedures?

A: Yes. Both components carry MSL 2A (4 Weeks) ratings, requiring identical moisture sensitivity precautions. Components must be stored in controlled humidity environments and used within four weeks of package opening, with baking procedures applied if exposure limits are exceeded.

Q: Can the substitute support higher current applications?

A: The substitute supports 180mA maximum current versus 150mA for the main part. However, both components are specified for 65mA test current operation. Higher current operation requires thermal analysis to ensure junction temperature remains within acceptable limits, as increased current directly increases power dissipation and thermal load.