SPMWHT541MP7WAUGS0 LED LM561B Plus White 3500K Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP7WAUGS0 is a Samsung Semiconductor LED lighting component from the LM561B Plus series, featuring warm white 3500K color temperature in a 5630 surface mount package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. The LM561B Plus series has been superseded by the LM281B+ series, which offers improved thermal characteristics and active product status. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term supply chain reliability.

Substiute Parts

SPMWHT541MP7WAUGS0

Samsung Semiconductor, Inc.In Stock: 1051SPMWHT541MP7WAUGS0 Datasheet

Current PartRFQ

SPMWHT541MP7WAUMS0

Samsung Semiconductor, Inc.In Stock: 52149SPMWHT541MP7WAUMS0 Datasheet

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SPMWH1228FD7W2U0SJ

Samsung Semiconductor, Inc.In Stock: 1092SPMWH1228FD7W2U0SJ Datasheet

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SPMWH1228FD7W2UKSJ

Samsung Semiconductor, Inc.In Stock: 870SPMWH1228FD7W2UKSJ Datasheet

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SPMWH1228FD7W2UMSJ

Samsung Semiconductor, Inc.In Stock: 1003SPMWH1228FD7W2UMSJ Datasheet

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SPMWH1228FD7WAU0SJ

Samsung Semiconductor, Inc.In Stock: 1145SPMWH1228FD7WAU0SJ Datasheet

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SPMWH1228FD7WAUKSJ

Samsung Semiconductor, Inc.In Stock: 863SPMWH1228FD7WAUKSJ Datasheet

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SPMWH1228FD7WAUMSJ

Samsung Semiconductor, Inc.In Stock: 999SPMWH1228FD7WAUMSJ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MP7WAUGS0 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color temperature: 3500K (warm white)
• Color: White, Warm
• CRI (Color Rendering Index): 90
• Package / Case: 4-SMD, Flat Leads
• Supplier Device Package: 5630
• Physical dimensions: 0.197" L x 0.118" W (5.00mm x 3.00mm)
• Viewing Angle: 120°
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Forward voltage (Vf): 2.95V nominal (acceptable range: 2.9V to 3.0V)
• Test current: 65mA to 150mA
• Maximum current: 180mA to 200mA

Substitutes are grouped into two categories:

Category 1: Direct Series Equivalent SPMWHT541MP7WAUMS0 is a direct equivalent within the LM561B Plus series, maintaining identical electrical and mechanical specifications while offering improved thermal performance (15°C/W vs. 20°C/W) and active product status.

Category 2: Series Upgrade Equivalents SPMWH1228FD7W2U0SJ, SPMWH1228FD7W2UKSJ, SPMWH1228FD7W2UMSJ, SPMWH1228FD7WAU0SJ, SPMWH1228FD7WAUKSJ, and SPMWH1228FD7WAUMSJ represent the LM281B+ series. These parts maintain identical color temperature, CRI, package dimensions, and viewing angle. Electrical differences include higher test current (150mA vs. 65mA) and slightly lower forward voltage (2.9V to 3.0V vs. 2.95V), with improved thermal resistance (25°C/W).

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (Maintenance & Repair): SPMWHT541MP7WAUMS0 is the primary substitute for the SPMWHT541MP7WAUGS0. Both parts belong to the LM561B Plus series and maintain identical electrical and mechanical specifications. SPMWHT541MP7WAUMS0 offers superior thermal performance (15°C/W vs. 20°C/W) and carries Active product status with significantly higher inventory availability (52,082 units vs. 1,034 units). Both parts are RoHS compliant and suitable for direct replacement in existing PCB assemblies without design modification.

For New Designs: The LM281B+ series (SPMWH1228FD7W2U0SJ, SPMWH1228FD7W2UKSJ, SPMWH1228FD7W2UMSJ, SPMWH1228FD7WAU0SJ, SPMWH1228FD7WAUKSJ, SPMWH1228FD7WAUMSJ) is the recommended upgrade path. These parts maintain identical color temperature (3500K), CRI (90), package dimensions (5630), and viewing angle (120°). The LM281B+ series offers improved thermal resistance (25°C/W) and carries ROHS3 Compliant status with REACH Unaffected designation. All LM281B+ variants are Active products with stable long-term availability.

Voltage and Current Considerations: Forward voltage differences between LM561B Plus (2.95V) and LM281B+ variants (2.9V to 3.0V) fall within acceptable operating ranges for most LED driver circuits. Test current increases from 65mA (LM561B Plus) to 150mA (LM281B+) require circuit-level evaluation to ensure driver capability and thermal management adequacy. Maximum current ratings (180mA vs. 200mA) provide sufficient margin for typical applications.

Compliance and Regulatory: All substitute parts maintain RoHS compliance. LM281B+ variants carry ROHS3 Compliant status, representing the current regulatory standard. All parts are classified under ECCN EAR99 and HTSUS 8541.41.0000.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP7WAUMS0 be used as a direct replacement for SPMWHT541MP7WAUGS0?

A: Yes. Both parts are from the LM561B Plus series with identical electrical specifications (2.95V, 65mA test current), mechanical dimensions (5630 package, 5.00mm x 3.00mm), and optical properties (3500K, 90 CRI, 120° viewing angle). SPMWHT541MP7WAUMS0 offers improved thermal performance and Active product status.

Q: What are the key differences between LM561B Plus and LM281B+ series?

A: The primary differences are test current (65mA vs. 150mA), thermal resistance (20°C/W vs. 25°C/W for LM281B+), and product status (Not For New Designs vs. Active). Forward voltage ranges are compatible (2.95V vs. 2.9V-3.0V). Color temperature, CRI, package, and dimensions remain identical.

Q: Are there any circuit design changes required when switching from LM561B Plus to LM281B+?

A: Circuit-level evaluation is required. The higher test current (150mA vs. 65mA) demands verification that LED drivers can supply the increased current. Thermal management design should account for the different thermal resistance characteristics. Forward voltage differences (2.95V vs. 2.9V-3.0V) are typically accommodated by standard LED driver circuits.

Q: Which LM281B+ variant should be selected: 2.9V or 3.0V forward voltage?

A: Selection depends on the LED driver circuit design. Parts with 2.9V forward voltage (SPMWH1228FD7W2U0SJ, SPMWH1228FD7W2UKSJ, SPMWH1228FD7W2UMSJ) are suitable for drivers with lower voltage headroom. Parts with 3.0V forward voltage (SPMWH1228FD7WAU0SJ, SPMWH1228FD7WAUKSJ, SPMWH1228FD7WAUMSJ) are appropriate for standard voltage applications. Both variants maintain identical color temperature, CRI, and package specifications.

Q: Is the 5630 package compatible with existing PCB layouts designed for SPMWHT541MP7WAUGS0?

A: Yes. All substitute parts use the identical 5630 package with 4-SMD flat leads, 5.00mm x 3.00mm dimensions, and 0.80mm maximum seated height. PCB footprints, solder pad layouts, and assembly processes require no modification.

Q: What is the inventory status for long-term supply?

A: SPMWHT541MP7WAUMS0 (LM561B Plus) has 52,082 units in stock. LM281B+ variants range from 785 to 1,035 units in stock. For new designs, LM281B+ series offers Active product status with manufacturer commitment to long-term availability. SPMWHT541MP7WAUGS0 (Not For New Designs) has limited inventory (1,034 units) and should not be specified for new projects.

Q: Are all substitute parts RoHS compliant?

A: Yes. SPMWHT541MP7WAUMS0 is RoHS Compliant. All LM281B+ variants are ROHS3 Compliant, representing the current regulatory standard. All parts are REACH Unaffected.