SPMWHT541MD5WAQMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAQMS2 is a Samsung Semiconductor LM561B series cool white LED (5700K) in 5630 surface mount package format. This component is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. The LED operates at 2.9V forward voltage with a 65mA test current and is housed in a 4-SMD flat lead exposed pad configuration measuring 5.00mm × 3.00mm.

Due to its discontinued design status, identifying functionally equivalent substitute components is essential for ongoing production support, maintenance applications, and legacy system repairs where this specific part number is no longer readily available through standard distribution channels.

Substiute Parts

SPMWHT541MD5WAQMS2

Samsung Semiconductor, Inc.In Stock: 1158SPMWHT541MD5WAQMS2 Datasheet

Current PartRFQ

SPMWHT541MP5WAQKS4

Samsung Semiconductor, Inc.In Stock: 16206SPMWHT541MP5WAQKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWHT541MD5WAQMS2 is determined by strict alignment across the following critical parameters:

Color and CCT Match: The substitute must maintain identical cool white color specification at 5700K to preserve optical and thermal characteristics in the application circuit.

Series Compatibility: Both the main part and substitute belong to the Samsung LM561B family, ensuring consistent die architecture and performance envelope.

Package and Footprint Alignment: The 5630 supplier device package with 4-SMD flat lead configuration must be identical to ensure PCB compatibility without redesign.

Electrical Operating Range: Forward voltage (Vf) and test current specifications must fall within acceptable tolerance bands. The substitute's maximum current rating must support the application's design current without exceeding safe operating limits.

Physical Dimensions: The 5.00mm × 3.00mm footprint and maximum seated height of 0.90mm must be maintained to prevent mechanical interference or thermal management issues.

Regulatory Compliance: RoHS and MSL classifications must meet or exceed the original part's compliance level to ensure supply chain and manufacturing process compatibility.

The SPMWHT541MP5WAQKS4 satisfies all substitution criteria as a direct functional equivalent within the LM561B product family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAQKS4

The SPMWHT541MP5WAQKS4 is the qualified substitute for SPMWHT541MD5WAQMS2 applications. Selection rationale is based on the following engineering factors:

Product Status Alignment: The substitute maintains active product status within Samsung's current portfolio, ensuring long-term availability and supply chain stability compared to the discontinued main part.

Electrical Compatibility: Forward voltage variance of 0.05V (2.9V to 2.95V) is within acceptable tolerance for LED circuit design. The higher maximum current rating (180mA vs. 150mA) provides additional operational margin without compromising the 65mA test current specification.

Thermal Performance: The substitute exhibits improved thermal resistance (15°C/W vs. 16°C/W), resulting in lower junction temperature operation under identical current conditions. This enhancement supports extended component lifespan and reliability.

Regulatory Compliance: ROHS3 compliance of the substitute exceeds the RoHS Compliant status of the main part, meeting current and future regulatory requirements across global markets.

Physical and Mechanical Compatibility: Identical footprint (5.00mm × 3.00mm), package type (5630), and mounting configuration ensure direct PCB-level substitution without layout modification or requalification.

Optical Specifications: Matching 5700K CCT and identical color classification preserve the intended application's color temperature and visual output characteristics.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAQKS4 be used as a direct drop-in replacement for SPMWHT541MD5WAQMS2?

A: Yes. Both components share identical footprint dimensions (5.00mm × 3.00mm), 5630 package configuration, and 4-SMD surface mount format. No PCB redesign or layout modification is required for substitution.

Q: What is the significance of the 0.05V forward voltage difference between the two parts?

A: The forward voltage variance (2.9V to 2.95V) is within standard LED circuit design tolerance. Current-limiting resistor values in typical LED driver circuits accommodate this variance without performance degradation. Circuit simulation or empirical testing is not required for this substitution.

Q: Why is the substitute part classified as "LM561B Plus" while the main part is "LM561B"?

A: The "Plus" designation indicates an enhanced product variant within the same LM561B family. Both parts maintain identical core electrical and optical specifications (5700K, 65mA test current, cool white color). The Plus variant offers improved thermal characteristics and higher maximum current rating.

Q: Does the lower seated height of the substitute (0.80mm vs. 0.90mm) affect PCB assembly?

A: No. The substitute's lower profile is mechanically compatible with the original design. The 0.10mm height reduction does not create clearance or interference issues in standard PCB layouts. This characteristic may provide marginal benefits in space-constrained applications.

Q: Are there any moisture sensitivity or storage requirement differences?

A: Both parts maintain identical MSL 2A (4 Weeks) classification. Storage, handling, and reflow soldering procedures remain unchanged. No additional moisture control measures are required when transitioning from the main part to the substitute.

Q: What is the impact of the substitute's higher maximum current rating (180mA vs. 150mA)?

A: The increased maximum current rating provides additional operational headroom without affecting the standard 65mA test current operation. This enhancement supports applications requiring higher brightness levels or future design iterations without component replacement.

Q: Is the substitute's improved thermal resistance (15°C/W vs. 16°C/W) significant for thermal management design?

A: The 1°C/W improvement represents approximately 6% better thermal performance. In high-brightness or continuous-operation applications, this translates to lower junction temperature and extended component lifespan. Existing thermal management designs remain valid with the substitute.

Q: Can the substitute be used in new product designs?

A: Yes. The SPMWHT541MP5WAQKS4 maintains active product status and is suitable for new designs. The original part (SPMWHT541MD5WAQMS2) is designated "Not For New Designs" and should not be selected for new development projects.