SPMWHT541MD5WAQMSB LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAQMSB 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 31 lumens at 65mA test current with 2.95V forward voltage.

The product status is listed as "Not For New Designs," indicating this part has been superseded in Samsung's product portfolio. Organizations currently using this component in active production or maintenance applications require equivalent alternatives that maintain electrical and mechanical compatibility while offering improved performance characteristics or better availability.

Substiute Parts

SPMWHT541MD5WAQMSB

Samsung Semiconductor, Inc.In Stock: 1213SPMWHT541MD5WAQMSB Datasheet

Current PartRFQ

SPMWHT541MP5WAQKS4

Samsung Semiconductor, Inc.In Stock: 16206SPMWHT541MP5WAQKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAQMSB is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Color and CCT: White, Cool 5700K
• Forward Voltage (Vf): 2.95V nominal
• Test Current: 65mA
• Package Type: 4-SMD, 5630 form factor
• Viewing Angle: 120°
• Mounting Type: Surface Mount
• CRI: 80
• Thermal Resistance: Within acceptable range for thermal design compatibility

Performance Tolerance Parameters:

• Luminous Flux: Minimum 29 lumens at 25°C, 65mA test conditions
• Lumens/Watt: Minimum 162 lm/W at test current
• Maximum Current Rating: Minimum 150mA

Compliance Parameters:

• RoHS Status: RoHS Compliant or equivalent
• MSL: 2A or better
• ECCN/HTSUS: Matching regulatory classification

The SPMWHT541MP5WAQKS4 qualifies as a direct substitute based on full alignment with all mandatory parameters and superior performance in flux output and efficiency metrics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAQKS4

The SPMWHT541MP5WAQKS4 is the qualified substitute for SPMWHT541MD5WAQMSB applications. Selection rationale is based on the following engineering factors:

Electrical Compatibility: Both components operate at identical forward voltage (2.95V) and test current (65mA), ensuring direct circuit compatibility without modification to current-limiting resistor networks or power supply specifications.

Optical Compatibility: Both components deliver 5700K cool white light with 80 CRI and 120° viewing angle. The substitute provides higher luminous flux (34lm vs. 31lm) and superior efficiency (177 lm/W vs. 162 lm/W), resulting in enhanced brightness output within the same electrical operating point.

Mechanical Compatibility: Both components use identical 5630 package format with 4-SMD configuration and matching 5.00 × 3.00mm footprint. The substitute features reduced seated height (0.80mm vs. 0.90mm) and lower thermal resistance (15°C/W vs. 16°C/W), providing thermal design advantages.

Compliance and Availability: The substitute holds Active product status with ROHS3 compliance certification, compared to the main part's "Not For New Designs" status. Inventory availability for SPMWHT541MP5WAQKS4 is significantly higher (16,110 pcs vs. 1,144 pcs), supporting both immediate procurement and long-term supply chain continuity.

Thermal Performance: The 1°C/W improvement in thermal resistance of the substitute enables more efficient heat dissipation, supporting higher ambient temperature operation or extended component lifespan in thermally constrained applications.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAQKS4 be used as a direct drop-in replacement for SPMWHT541MD5WAQMSB?

A: Yes. Both components share identical electrical specifications (2.95V forward voltage, 65mA test current), optical characteristics (5700K, 80 CRI, 120° viewing angle), and mechanical footprint (5630 package, 5.00 × 3.00mm). No circuit modifications are required.

Q: What are the differences between the main part and substitute?

A: The substitute (SPMWHT541MP5WAQKS4) belongs to the LM561B Plus series and delivers higher luminous flux (34lm vs. 31lm) and efficiency (177 lm/W vs. 162 lm/W) at identical operating current. It features lower seated height (0.80mm vs. 0.90mm), improved thermal resistance (15°C/W vs. 16°C/W), higher maximum current rating (180mA vs. 150mA), and Active product status versus "Not For New Designs."

Q: Are there any package differences that affect PCB assembly?

A: Both components use 5630 package format with 4-SMD configuration. The main part specifies "Flat Lead Exposed Pad" while the substitute specifies "Flat Leads." Both are compatible with standard surface mount assembly processes. The substitute's reduced height (0.80mm vs. 0.90mm) may provide marginal benefits in space-constrained designs.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the SPMWHT541MD5WAQMSB has been superseded in Samsung's product portfolio. Existing designs using this component remain supported, but new product development should transition to active alternatives such as SPMWHT541MP5WAQKS4 to ensure long-term supply availability and access to product improvements.

Q: Does the higher efficiency of the substitute affect circuit design?

A: No. Both components operate at identical forward voltage and test current specifications. The substitute's higher efficiency (177 lm/W vs. 162 lm/W) results in increased light output at the same electrical input, not a change in electrical behavior. Existing current-limiting resistor and power supply designs remain valid.

Q: Are thermal management considerations different between the two parts?

A: The substitute features improved thermal resistance (15°C/W vs. 16°C/W), enabling more efficient heat dissipation. This provides a thermal design margin improvement but does not require changes to existing thermal management strategies. Applications with marginal thermal headroom benefit from the substitute's lower thermal resistance.

Q: What is the inventory status for each part?

A: SPMWHT541MD5WAQMSB has 1,144 pieces in stock. SPMWHT541MP5WAQKS4 has 16,110 pieces in stock. The substitute offers significantly higher availability for immediate procurement and sustained supply chain support.

Q: Are both parts RoHS compliant?

A: Yes. SPMWHT541MD5WAQMSB is RoHS Compliant. SPMWHT541MP5WAQKS4 is ROHS3 Compliant. Both meet RoHS requirements for hazardous substance restrictions.