SPMWHT541MD5WAPMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAPMS3 is a Samsung Semiconductor LM561B series cool white LED (6500K) designed for surface mount lighting applications. This component features a 5630 package format with 4-SMD flat lead exposed pad configuration, operating at 2.9V typical forward voltage and 65mA test current. The part is classified as "Not For New Designs," indicating it has been superseded in Samsung's product portfolio. Identifying equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and component sourcing continuity.

Substiute Parts

SPMWHT541MD5WAPMS3

Samsung Semiconductor, Inc.In Stock: 1908SPMWHT541MD5WAPMS3 Datasheet

Current PartRFQ

SPMWHT541MP5WAPKS4

Samsung Semiconductor, Inc.In Stock: 48537SPMWHT541MP5WAPKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAPMS3 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Series family: LM561B or LM561B Plus (same base product number SPMWHT541)
• Color and CCT: White, Cool 6500K
• Package format: 5630 (4-SMD, surface mount)
• Mounting type: Surface Mount
• Physical dimensions: 5.00mm x 3.00mm footprint
• Electrical compatibility: Forward voltage within acceptable operating range (2.9V to 2.95V)
• Test current: 65mA nominal operation
• CRI: 80 minimum

Substitution Logic: The SPMWHT541MP5WAPKS4 qualifies as a direct substitute because it maintains identical color temperature (6500K), CRI (80), package dimensions (5630, 5.00mm x 3.00mm), test current (65mA), and mounting type. The forward voltage differential (2.95V vs. 2.9V) and maximum current increase (180mA vs. 150mA) remain within acceptable engineering tolerances for the LM561B product family. The substitute represents an active product variant (LM561B Plus) with enhanced performance characteristics while preserving mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Existing Production Support: The SPMWHT541MD5WAPMS3 remains available with 1860 units in stock. Continued use is appropriate for maintenance, repair, and legacy system support where the "Not For New Designs" status does not apply.

For New Design Initiatives: The SPMWHT541MP5WAPKS4 is the recommended substitute for new applications. This part carries Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The LM561B Plus variant provides enhanced thermal performance (15°C/W vs. 16°C/W), improved maximum current rating (180mA vs. 150mA), and documented luminous flux output (33lm at 65mA test current, 167 lm/W efficiency). The 0.10mm reduction in seated height (0.80mm vs. 0.90mm) may provide design flexibility for space-constrained applications.

Compliance Considerations: Both parts maintain MSL 2A (4 Weeks) moisture sensitivity and ECCN EAR99 classification. The substitute's ROHS3 compliance supersedes the original RoHS Compliant designation, providing enhanced environmental and regulatory assurance for future production batches.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAPKS4 be used as a direct drop-in replacement for SPMWHT541MD5WAPMS3?

A: Yes, within the specified electrical and mechanical parameters. Both parts share identical 5630 package dimensions (5.00mm x 3.00mm), 4-SMD surface mount configuration, 6500K color temperature, 80 CRI, and 65mA test current. The forward voltage difference (2.95V vs. 2.9V) and maximum current increase (180mA vs. 150mA) are within acceptable operating tolerances for the LM561B family. The substitute's 0.10mm lower seated height (0.80mm) is compatible with standard PCB assembly processes.

Q: What is the significance of the "Not For New Designs" status on SPMWHT541MD5WAPMS3?

A: This designation indicates Samsung has transitioned the LM561B standard variant to end-of-life status in favor of the LM561B Plus series. The part remains available for existing production and support applications but should not be selected for new product development. The SPMWHT541MP5WAPKS4 (LM561B Plus) is the active replacement offering improved performance and long-term availability.

Q: Are there mechanical compatibility concerns when substituting these parts?

A: No mechanical incompatibilities exist. Both parts use identical 5630 package footprints and 4-SMD surface mount lead configurations. The substitute's slightly lower profile (0.80mm vs. 0.90mm) presents no clearance issues and may improve design margins in height-constrained applications. PCB pad layouts and reflow profiles remain unchanged.

Q: How do the thermal characteristics compare?

A: The SPMWHT541MP5WAPKS4 provides superior thermal performance with 15°C/W thermal resistance compared to 16°C/W for the original part. This 1°C/W improvement reduces junction temperature rise under identical operating conditions, enhancing reliability and enabling higher current operation within safe thermal limits.

Q: What inventory considerations apply to these substitutes?

A: SPMWHT541MD5WAPMS3 has 1860 units in current stock. SPMWHT541MP5WAPKS4 has significantly higher availability at 48482 units, providing superior supply chain security for ongoing production requirements.