SPMWHT541MP5WATUS4 LED LM561B Plus Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WATUS4 is a Samsung Semiconductor LM561B Plus white neutral LED in 5630 surface mount package configuration. This part is classified as Not For New Designs, indicating it has reached end-of-life status. The LM561B Plus series delivers 33 lumens at 65mA test current with 4000K color temperature and 80 CRI, designed for general illumination applications requiring neutral white output.

Due to its Not For New Designs status, direct parametric equivalents from the active product line are available to support ongoing production requirements and field replacements. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

SPMWHT541MP5WATUS4

Samsung Semiconductor, Inc.In Stock: 872SPMWHT541MP5WATUS4 Datasheet

Current PartRFQ

SPMWHT541MP5WAT0S4

Samsung Semiconductor, Inc.In Stock: 1117SPMWHT541MP5WAT0S4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATKS4

Samsung Semiconductor, Inc.In Stock: 165486SPMWHT541MP5WATKS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATMS4

Samsung Semiconductor, Inc.In Stock: 600211SPMWHT541MP5WATMS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATNS4

Samsung Semiconductor, Inc.In Stock: 855SPMWHT541MP5WATNS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATSS4

Samsung Semiconductor, Inc.In Stock: 666SPMWHT541MP5WATSS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of SPMWHT541MP5WATUS4 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Color: White, Neutral (4000K CCT)
• Flux output: 33 lm at 65mA test current (32–34 lm acceptable range)
• Forward voltage: 2.95V typical
• Test current: 65mA
• Maximum current rating: 180mA
• Lumens per watt efficiency: 172 lm/W
• CRI: 80

Mechanical Equivalence Criteria:

• Package type: 4-SMD, Flat Leads (5630)
• Dimensions: 5.00mm × 3.00mm
• Height seated: 0.80mm maximum
• Mounting type: Surface Mount
• Packaging format: Tape & Reel (TR)
• MSL rating: 2A (4 Weeks)

Identified Substitute Parts: All five substitute part numbers (SPMWHT541MP5WATSS4, SPMWHT541MP5WAT0S4, SPMWHT541MP5WATMS4, SPMWHT541MP5WATKS4, SPMWHT541MP5WATNS4) maintain complete electrical and mechanical equivalence to the main part. Substitutes differ only in product status (Active vs. Not For New Designs), compliance certifications, thermal resistance specifications, and inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SPMWHT541MP5WATMS4

SPMWHT541MP5WATMS4 is the preferred substitute for SPMWHT541MP5WATUS4. This part maintains complete electrical and mechanical equivalence while offering Active product status. It carries ROHS3 Compliant certification, providing enhanced regulatory compliance over the RoHS Compliant rating of the main part. Inventory availability of 600,200 units ensures supply continuity for production and field replacement applications. The thermal resistance specification of 16°C/W is within acceptable tolerance for the LM561B Plus series thermal management requirements.

Secondary Recommendation: SPMWHT541MP5WATKS4

SPMWHT541MP5WATKS4 serves as an alternative substitute with Active product status and RoHS Compliant certification. This part offers the highest inventory availability at 165,400 units, supporting large-scale production requirements. Thermal resistance of 15°C/W matches the main part specification exactly. Selection of this part is appropriate when maximum supply assurance is required.

Tertiary Options: SPMWHT541MP5WAT0S4, SPMWHT541MP5WATNS4, SPMWHT541MP5WATSS4

These three parts provide additional substitution pathways with Active product status. SPMWHT541MP5WATSS4 offers ROHS3 Compliant and REACH Unaffected certifications with thermal resistance of 14°C/W, the lowest in the substitute group. SPMWHT541MP5WAT0S4 and SPMWHT541MP5WATNS4 maintain RoHS Compliant status with thermal resistance of 15°C/W. Selection among these options depends on specific compliance requirements and inventory allocation priorities.

Substitution Constraints:

All substitute parts are direct electrical and mechanical equivalents. No circuit redesign, PCB layout modification, or thermal management adjustment is required. The thermal resistance variance (14–16°C/W) across the substitute group does not necessitate thermal design changes for applications originally qualified to the main part's 15°C/W specification.

Frequently Asked Questions (FAQ)

Q1: Can SPMWHT541MP5WATMS4 be used as a direct replacement for SPMWHT541MP5WATUS4 without PCB modification?

A: Yes. SPMWHT541MP5WATMS4 is a direct parametric equivalent. All electrical characteristics (2.95V forward voltage, 65mA test current, 33 lm output, 4000K CCT, 80 CRI) and mechanical specifications (5630 package, 5.00mm × 3.00mm dimensions, 0.80mm height, Surface Mount, Tape & Reel packaging) are identical. No PCB layout changes are required.

Q2: What is the difference between RoHS Compliant and ROHS3 Compliant certifications?

A: Both certifications indicate compliance with Restriction of Hazardous Substances directives. ROHS3 Compliant represents the current regulatory standard with updated substance restrictions. Parts carrying ROHS3 Compliant certification (SPMWHT541MP5WATMS4, SPMWHT541MP5WATSS4) meet the latest compliance requirements and are preferred for new production designs and long-term field deployment.

Q3: Why does SPMWHT541MP5WATSS4 have a thermal resistance of 14°C/W while other substitutes specify 15°C/W or 16°C/W?

A: Thermal resistance variation within the 14–16°C/W range reflects manufacturing process optimization across different production batches. This variance is within acceptable tolerance for the LM561B Plus series and does not affect thermal performance in applications designed for the main part's 15°C/W specification. Lower thermal resistance (14°C/W) provides improved thermal performance margin.

Q4: Is SPMWHT541MP5WATUS4 still available for new production orders?

A: SPMWHT541MP5WATUS4 carries Not For New Designs status, indicating end-of-life classification. While 778 units remain in inventory, Samsung Semiconductor does not recommend this part for new design implementations. Active substitute parts (SPMWHT541MP5WATMS4, SPMWHT541MP5WATKS4, SPMWHT541MP5WAT0S4, SPMWHT541MP5WATNS4, SPMWHT541MP5WATSS4) are the appropriate selection for ongoing production.

Q5: Can substitute parts be mixed within a single production batch or assembly?

A: Yes. All substitute parts maintain identical electrical output (33 lm, 2.95V, 65mA), color characteristics (4000K, 80 CRI), and mechanical form factor (5630 package, 5.00mm × 3.00mm, 0.80mm height). Mixing substitute parts within a single assembly or production batch does not affect circuit performance, optical output, or thermal management. However, inventory tracking and supply chain documentation should record which substitute part number is used in each production lot.

Q6: What is the Moisture Sensitivity Level (MSL) 2A rating, and how does it affect handling?

A: MSL 2A indicates the component can be stored in dry conditions for up to 4 weeks before soldering. After 4 weeks of exposure to ambient humidity, the part must be baked at specified temperature and duration before assembly to prevent moisture-induced solder joint defects. All main and substitute parts carry identical MSL 2A (4 Weeks) ratings, requiring identical moisture control procedures.

Q7: Are there any differences in viewing angle or light distribution between the main part and substitutes?

A: No. All parts specify 120° viewing angle, indicating identical light distribution characteristics. The LM561B Plus series maintains consistent optical performance across all part variants.

Q8: Which substitute part offers the best long-term supply assurance?

A: SPMWHT541MP5WATMS4 combines Active product status with the highest inventory level (600,200 units) among the primary recommendations. This part provides optimal supply continuity for both immediate production needs and long-term field replacement requirements.