SPMWHT541MD5WAWMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAWMS2 is a Samsung Semiconductor LM561B series warm white LED (2700K) designed for surface mount applications. This component features a 5630 package format with 4-SMD flat lead exposed pad configuration, delivering 27 lumens at 65mA test current with 141 lm/W efficiency and 80 CRI. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional and mechanical compatibility for ongoing production and replacement applications.

Substiute Parts

SPMWHT541MD5WAWMS2

Samsung Semiconductor, Inc.In Stock: 955SPMWHT541MD5WAWMS2 Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS4

Samsung Semiconductor, Inc.In Stock: 26064SPMWHT541MP5WAWMS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SPMWHT541MD5WAWMS2 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Color and correlated color temperature (CCT): White, Warm 2700K
• Series compatibility: LM561B family
• Forward voltage (Typ): 2.95V
• Viewing angle: 120°
• CRI: 80
• Package format: 5630 (4-SMD surface mount)
• Compliance: RoHS Compliant, MSL 2A

Secondary Compatibility Factors:

• Test current: 65mA nominal operation
• Maximum current rating: Must support design current envelope
• Thermal resistance: Package thermal performance
• Physical dimensions: Length, width, and height within PCB layout constraints

The SPMWHT541MP5WAWMS4 (LM561B Plus variant) qualifies as a direct substitute based on identical electrical specifications (2.95V Vf, 2700K CCT, 120° viewing angle, 80 CRI) and compatible 5630 package geometry. The LM561B Plus designation indicates an enhanced generation within the same series, with improved luminous flux output (31 lm vs. 27 lm) and efficiency (162 lm/W vs. 141 lm/W) at identical test conditions.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The SPMWHT541MP5WAWMS4 is a direct functional and mechanical substitute for the obsolete SPMWHT541MD5WAWMS2. Both components share identical electrical specifications (2.95V forward voltage, 65mA test current, 2700K CCT, 80 CRI, 120° viewing angle) and compatible 5630 surface mount package geometry.

Compliance and Certification:

Both parts maintain RoHS Compliance, identical MSL 2A (4 Weeks) moisture sensitivity ratings, and matching export classifications (EAR99, HTSUS 8541.41.0000). No regulatory or environmental compliance barriers exist for substitution.

Performance Considerations:

The LM561B Plus variant (SPMWHT541MP5WAWMS4) delivers enhanced performance metrics: 31 lm versus 27 lm luminous flux (+15% output), 162 lm/W versus 141 lm/W efficiency (+15% efficiency), and 180 mA maximum current versus 150 mA (+20% current headroom). Thermal resistance improves from 16°C/W to 15°C/W.

Physical Compatibility:

Length dimension increases from 5.00 mm to 5.60 mm (+0.60 mm). Height decreases from 0.90 mm to 0.80 mm (−0.10 mm). Width remains constant at 3.00 mm. PCB layout verification is required to confirm the 0.60 mm length increase does not conflict with adjacent component placement or trace routing.

Packaging and Availability:

The substitute part is supplied in Tape & Reel (TR) format with 25,996 pieces in active inventory, compared to the obsolete part's limited stock of 913 pieces. Active product status ensures long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAWMS4 directly replace SPMWHT541MD5WAWMS2 without circuit modification?

A: Yes. Identical forward voltage (2.95V), test current (65mA), and color temperature (2700K) ensure direct electrical compatibility. No circuit redesign is required. PCB layout verification is necessary only to confirm the 0.60 mm length increase does not create mechanical conflicts.

Q: What is the difference between LM561B and LM561B Plus?

A: Both are Samsung warm white 2700K LEDs in the 5630 package with identical electrical specifications. The LM561B Plus represents an enhanced generation with improved luminous flux (31 lm vs. 27 lm), efficiency (162 lm/W vs. 141 lm/W), and maximum current rating (180 mA vs. 150 mA) at identical test conditions.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both parts are RoHS Compliant, share identical MSL 2A ratings, and carry matching export classifications (EAR99, HTSUS 8541.41.0000). Substitution introduces no regulatory or environmental compliance barriers.

Q: What is the physical dimension difference, and does it affect PCB design?

A: The substitute part is 0.60 mm longer (5.60 mm vs. 5.00 mm) and 0.10 mm shorter in height (0.80 mm vs. 0.90 mm). Width remains unchanged at 3.00 mm. PCB layout review is required to confirm the length increase does not conflict with adjacent components or trace routing. Height reduction is beneficial for clearance.

Q: Does the improved efficiency of the LM561B Plus affect thermal management?

A: The LM561B Plus exhibits improved thermal performance with 15°C/W thermal resistance compared to 16°C/W in the original part. This represents a 6% improvement in heat dissipation efficiency, reducing junction temperature at identical power dissipation levels.

Q: What packaging formats are available for the substitute part?

A: The SPMWHT541MP5WAWMS4 is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly. The original part was supplied in bulk packaging. Confirm tape specifications and reel compatibility with assembly equipment.

Q: Is the substitute part available in sufficient quantity for production?

A: Yes. The SPMWHT541MP5WAWMS4 has 25,996 pieces in active inventory with Active product status, ensuring reliable long-term supply. The original obsolete part has limited remaining stock of 913 pieces.

Q: Can I use the substitute part in existing designs without re-qualification?

A: Electrical compatibility is confirmed. PCB layout verification is required due to the 0.60 mm length dimension change. Thermal and optical performance improvements may require re-evaluation of thermal management and light distribution characteristics in the specific application context.