SPMWHT541MD5WAQMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAQMS3 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 65mA test current and delivers 80 CRI (Color Rendering Index) performance suitable for general lighting applications.

Due to its discontinued design status, equivalent substitute parts from the same manufacturer series are necessary for ongoing production requirements, maintenance applications, and design continuity where this specific part number is currently specified.

Substiute Parts

SPMWHT541MD5WAQMS3

Samsung Semiconductor, Inc.In Stock: 807SPMWHT541MD5WAQMS3 Datasheet

Current PartRFQ

SPMWHT541MP5WAQKS4

Samsung Semiconductor, Inc.In Stock: 16206SPMWHT541MP5WAQKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for SPMWHT541MD5WAQMS3 is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Series family: LM561B (same base product number SPMWHT541)
• Color specification: White, Cool white
• CCT (Correlated Color Temperature): 5700K
• CRI (Color Rendering Index): 80 minimum
• Package type: 4-SMD surface mount in 5630 footprint
• Physical dimensions: 5.00mm L × 3.00mm W (within tolerance)
• Electrical compatibility: Forward voltage 2.9V nominal, test current 65mA

Secondary Compatibility Parameters:

• Current rating: Maximum current must accommodate 65mA test condition
• Thermal characteristics: Package thermal resistance suitable for application thermal budget
• Compliance: RoHS and MSL ratings must meet or exceed original specification
• Mounting type: Surface mount only

The substitute part SPMWHT541MP5WAQKS4 qualifies as a direct equivalent based on these criteria. It maintains identical color temperature, CRI, footprint, and electrical test conditions while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SPMWHT541MP5WAQKS4

The SPMWHT541MP5WAQKS4 is the qualified substitute for SPMWHT541MD5WAQMS3 based on the following engineering factors:

Product Status Alignment: The main part carries "Not For New Designs" status, indicating Samsung has transitioned this component to end-of-life. The substitute part maintains "Active" status, ensuring continued availability, supply chain stability, and manufacturer support for production environments.

Electrical Compatibility: Both parts operate at identical test conditions (65mA, 5700K, 80 CRI). The forward voltage variance of 0.05V (2.9V to 2.95V) falls within standard LED manufacturing tolerances and does not require circuit redesign. The substitute's higher maximum current rating (180mA vs. 150mA) provides additional operational margin without affecting the 65mA test point performance.

Compliance and Certification: Both parts meet RoHS requirements and share identical MSL (2A, 4 Weeks) moisture sensitivity ratings. The substitute achieves ROHS3 compliance, representing current regulatory standards.

Physical and Thermal Characteristics: The substitute maintains identical footprint dimensions (5.00mm × 3.00mm) and 5630 package format, ensuring PCB layout compatibility. The lower seated height (0.80mm vs. 0.90mm) and improved thermal resistance (15°C/W vs. 16°C/W) represent design enhancements that do not compromise mechanical fit or thermal performance.

Performance Data: The substitute provides documented luminous flux (34lm at 65mA) and luminous efficacy (177 lm/W), enabling precise photometric calculations for lighting design applications where the main part lacked published specifications.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAQKS4 be used as a direct drop-in replacement for SPMWHT541MD5WAQMS3?

A: Yes. Both parts share identical electrical test conditions (65mA, 2.9V nominal forward voltage), color temperature (5700K), CRI (80), and physical footprint (5630, 5.00mm × 3.00mm). The 0.05V forward voltage difference and lower seated height of the substitute are within standard LED manufacturing tolerances and do not require circuit modification.

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

A: This designation indicates the part has reached end-of-life in Samsung's product portfolio. Existing inventory may be available, but the manufacturer will not continue production or provide long-term supply guarantees. For ongoing production, the active substitute part is the appropriate selection.

Q: Are there any PCB layout considerations when switching from the main part to the substitute?

A: No layout changes are required. Both parts use identical 5630 package footprints with 5.00mm × 3.00mm dimensions. The substitute's lower seated height (0.80mm vs. 0.90mm) actually provides additional clearance margin for component placement and solder joint inspection.

Q: How do the thermal characteristics compare?

A: The substitute offers improved thermal performance with 15°C/W thermal resistance compared to 16°C/W for the main part. This represents approximately 6% better heat dissipation, which is beneficial for applications with thermal constraints but does not require design changes for existing circuits.

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

A: Both descriptions refer to the same 4-SMD 5630 package format with surface mount leads. The terminology variation reflects different documentation conventions between product generations. Electrical and mechanical compatibility is identical.

Q: Is the substitute part available in the same packaging format (Tape & Reel)?

A: Yes. Both the main part and substitute are supplied in Tape & Reel (TR) packaging format suitable for automated assembly processes. MSL ratings (2A, 4 Weeks) are identical.

Q: Can the substitute part be used in applications requiring the exact forward voltage of 2.9V?

A: The substitute operates at 2.95V typical forward voltage, representing a 0.05V increase. For applications with strict voltage regulation requirements, this variance must be evaluated within the circuit's voltage tolerance band. In most LED driver circuits with current regulation, this variance is transparent to system performance.

Q: What inventory status should be considered when selecting between these parts?

A: The main part shows 740 units in stock (legacy inventory), while the substitute shows 16,110 units in stock (active production). For production planning, the substitute's significantly higher inventory level provides supply security and reduces lead time risk.