SPMWHT541MD5WAWKS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAWKS2 is a Samsung Semiconductor LM561B series warm white LED (2700K) designed for surface mount applications in LED lighting systems. This component operates at 2.95V forward voltage with a 65mA test current, delivering 27 lumens at 141 lm/W efficiency. The device features a 120° viewing angle and is packaged in a 4-SMD, flat lead exposed pad configuration (5630 package).

The SPMWHT541MD5WAWKS2 carries a "Not For New Designs" product status, indicating Samsung has discontinued active development for this variant. This status necessitates identification of equivalent substitute components that maintain functional compatibility while offering current manufacturing support and improved performance characteristics.

Substiute Parts

SPMWHT541MD5WAWKS2

Samsung Semiconductor, Inc.In Stock: 896SPMWHT541MD5WAWKS2 Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS4

Samsung Semiconductor, Inc.In Stock: 26064SPMWHT541MP5WAWMS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAWKS2 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Series family (LM561B base product number)
• Color and correlated color temperature (White, Warm 2700K)
• Forward voltage (2.95V typical)
• Test current (65mA)
• Viewing angle (120°)
• Package type (4-SMD, 5630 supplier device package)
• Mounting type (Surface Mount)
• RoHS compliance status
• Moisture sensitivity level (MSL 2A)

Allowable Variation Parameters:

• Luminous flux output (27 lm baseline; higher output acceptable)
• Lumens per watt efficiency (141 lm/W baseline; higher efficiency acceptable)
• Maximum current rating (150mA baseline; higher rating acceptable)
• Physical dimensions (minor variations within package family acceptable)
• Thermal resistance (16°C/W baseline; lower values acceptable)
• Product status (Active status preferred over "Not For New Designs")

The SPMWHT541MP5WAWMS4 qualifies as a direct substitute based on matching all mandatory parameters while offering improved performance in luminous flux (31 lm), efficiency (162 lm/W), and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SPMWHT541MP5WAWMS4

The SPMWHT541MP5WAWMS4 is the qualified substitute for the SPMWHT541MD5WAWKS2 based on the following engineering criteria:

1. Product Status Alignment: The substitute carries Active product status, ensuring continued manufacturing availability and supply chain stability. The main part's "Not For New Designs" designation indicates Samsung's transition away from this variant.

2. Electrical Compatibility: Both components share identical forward voltage (2.95V) and test current (65mA) specifications, ensuring direct compatibility with existing circuit designs without modification to current-limiting resistor values or power supply requirements.

3. Optical Compatibility: Identical color temperature (2700K), CRI (80), and viewing angle (120°) maintain photometric performance in lighting applications.

4. Compliance Certification: Both components are RoHS compliant with identical MSL ratings (2A, 4 Weeks), satisfying regulatory and environmental requirements.

5. Performance Enhancement: The substitute delivers improved luminous flux (31 lm vs. 27 lm) and efficiency (162 lm/W vs. 141 lm/W) at identical operating current, providing superior light output without increased power consumption.

6. Thermal Performance: The substitute exhibits lower thermal resistance (15°C/W vs. 16°C/W), supporting improved heat dissipation in thermal-constrained applications.

7. Physical Compatibility: The substitute's 5630 package maintains surface mount compatibility. The 0.60 mm length increase and 0.10 mm height reduction require verification against specific PCB layout constraints, particularly in space-limited designs.

Selection Criteria Summary: Choose SPMWHT541MP5WAWMS4 for new designs and production transitions. Retain SPMWHT541MD5WAWKS2 only for legacy system maintenance where existing inventory is available and performance specifications are non-negotiable.

Frequently Asked Questions (FAQ)

Q: Can the SPMWHT541MP5WAWMS4 directly replace the SPMWHT541MD5WAWKS2 without circuit modification?

A: Yes. Both components operate at identical forward voltage (2.95V) and test current (65mA). Existing current-limiting resistor values and power supply configurations require no adjustment. The substitute's higher maximum current rating (180mA vs. 150mA) does not necessitate circuit changes.

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

A: This designation indicates Samsung has concluded active development and manufacturing optimization for the SPMWHT541MD5WAWKS2. The company prioritizes production resources toward the LM561B Plus variant (SPMWHT541MP5WAWMS4). New product designs should incorporate the substitute to ensure long-term supply availability and access to manufacturing improvements.

Q: Are there dimensional differences that affect PCB layout?

A: Yes. The substitute is 0.60 mm longer (5.60 mm vs. 5.00 mm) and 0.10 mm lower in profile (0.80 mm vs. 0.90 mm). PCB footprints designed for the main part must be verified for the substitute's length. Height reduction is generally favorable for low-profile applications. Consult PCB layout documentation to confirm clearance compatibility.

Q: Do the optical characteristics remain identical?

A: Yes. Both components deliver identical color temperature (2700K), color rendering index (80), and viewing angle (120°). The substitute's higher luminous flux (31 lm vs. 27 lm) represents improved light output, not a change in color quality or beam pattern.

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

A: The main part features an exposed thermal pad on the bottom surface, providing direct thermal contact to the PCB for enhanced heat dissipation. The substitute uses flat leads without an exposed pad. Thermal management in the substitute relies on lead-based heat transfer. Applications requiring maximum thermal performance should evaluate thermal resistance specifications (15°C/W vs. 16°C/W) and PCB thermal design.

Q: Are both components RoHS compliant?

A: Yes. Both the SPMWHT541MD5WAWKS2 and SPMWHT541MP5WAWMS4 are RoHS compliant and carry identical moisture sensitivity levels (MSL 2A, 4 Weeks), satisfying regulatory requirements for EU and global markets.

Q: What is the efficiency improvement of the substitute?

A: The SPMWHT541MP5WAWMS4 delivers 162 lm/W compared to 141 lm/W for the main part, representing a 21 lm/W (14.9%) efficiency gain at identical operating current. This improvement reduces power consumption per unit of light output in lighting system designs.

Q: Can the substitute be used in existing inventory management systems?

A: The substitute shares the same base product number (SPMWHT541) but carries a distinct full part number (SPMWHT541MP5WAWMS4). Inventory systems must treat these as separate line items. However, circuit-level compatibility allows substitution in bill-of-materials (BOM) documentation with appropriate cross-reference notation.