SPMWHT541MD5WAWMSD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAWMSD is a Samsung Semiconductor LM561B series warm white LED designed for surface mount applications. This component delivers 32 lumens at 65mA with a color temperature of 2700K and a Color Rendering Index (CRI) of 80. The part is marked as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. This obsolescence necessitates identification of functionally equivalent substitute components to maintain design continuity and support existing inventory requirements.

Substiute Parts

SPMWHT541MD5WAWMSD

Samsung Semiconductor, Inc.In Stock: 713SPMWHT541MD5WAWMSD Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS5

Samsung Semiconductor, Inc.In Stock: 23523SPMWHT541MP5WAWMS5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAWMSD is determined by strict alignment of the following critical parameters:

Mandatory Matching Criteria:

• Color and CCT: White, Warm 2700K
• CRI: 80 or higher
• Test Current: 65 mA nominal operation
• Forward Voltage: 2.95 V (±tolerance)
• Viewing Angle: 120°
• Package Type: 4-SMD surface mount, 5630 form factor
• Footprint Dimensions: 5.00 × 3.00 mm
• Thermal Resistance: Within acceptable range for thermal design
• Compliance: RoHS and MSL ratings compatible with assembly processes

Substitution Logic: The SPMWHT541MP5WAWMS5 qualifies as a direct substitute because it maintains identical color temperature, CRI, test current, forward voltage, viewing angle, and mechanical footprint. Both components are Samsung LM561B series warm white LEDs with 5630 package geometry and surface mount configuration. The substitute part represents an evolution within the same product family (LM561B Plus variant) with improved performance characteristics while preserving electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAWMS5

The SPMWHT541MP5WAWMS5 is the recommended substitute for the SPMWHT541MD5WAWMSD based on the following engineering criteria:

Compliance and Status: The substitute part carries Active product status, ensuring long-term availability and supply chain continuity. It meets ROHS3 compliance, which exceeds the RoHS Compliant rating of the original part, supporting current regulatory requirements for electronic components.

Electrical Compatibility: Both parts operate at identical forward voltage (2.95 V) and test current (65 mA), ensuring direct circuit compatibility without modification to drive electronics or current-limiting resistor values. The substitute's higher maximum current rating (180 mA vs. 150 mA) provides additional design margin without affecting nominal operation.

Photometric Performance: The substitute delivers 33 lumens at 65 mA compared to 32 lumens for the original part, representing a 3% increase in light output within the specified tolerance range. Efficiency improves from 167 lm/W to 172 lm/W, a 3% gain. Both parts maintain identical color temperature (2700K) and CRI (80), ensuring color consistency in lighting applications.

Mechanical and Thermal Characteristics: The 5630 package footprint and 5.00 × 3.00 mm dimensions are identical, enabling direct PCB layout compatibility. The substitute's reduced height (0.80 mm vs. 0.90 mm) and improved thermal resistance (15°C/W vs. 16°C/W) provide thermal design benefits without requiring layout modifications.

Moisture and Handling: Both parts share identical MSL 2A (4 Weeks) ratings, maintaining equivalent moisture sensitivity and storage requirements for assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the SPMWHT541MP5WAWMS5 be used as a direct replacement for the SPMWHT541MD5WAWMSD without PCB modifications?

A: Yes. Both parts share identical electrical parameters (2.95 V forward voltage, 65 mA test current), identical color specifications (2700K, CRI 80), and identical mechanical footprint (5630 package, 5.00 × 3.00 mm). No circuit modifications, resistor value changes, or PCB layout alterations are required.

Q: What are the differences between the main part and the substitute?

A: The substitute is a newer variant (LM561B Plus) within the same product family. Key differences include: (1) higher light output (33 lm vs. 32 lm at 65 mA), (2) improved efficiency (172 lm/W vs. 167 lm/W), (3) higher maximum current rating (180 mA vs. 150 mA), (4) lower profile height (0.80 mm vs. 0.90 mm), (5) better thermal resistance (15°C/W vs. 16°C/W), and (6) Active product status versus Not For New Designs. All differences are performance improvements with no negative impact on compatibility.

Q: Are there any package or lead differences between these parts?

A: Both parts use the 5630 package with 4-SMD configuration. The main part specifies "Flat Lead Exposed Pad" while the substitute specifies "Flat Leads." Both configurations are mechanically compatible with standard 5630 PCB footprints. The exposed pad on the original part provides enhanced thermal performance, while the substitute achieves equivalent thermal performance through improved package design (15°C/W vs. 16°C/W).

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

A: This designation indicates the SPMWHT541MD5WAWMSD has reached end-of-life in Samsung's product roadmap. The manufacturer recommends transitioning to newer alternatives for new product development. The SPMWHT541MP5WAWMS5, with Active status, is the designated successor and is supported for ongoing production and new designs.

Q: Are the RoHS compliance levels compatible?

A: Yes. The original part is RoHS Compliant, while the substitute is ROHS3 Compliant. ROHS3 represents a higher compliance standard that includes additional restricted substances. Components meeting ROHS3 are fully compatible with systems designed for RoHS compliance.

Q: Can inventory of the original part be mixed with the substitute in production?

A: Yes. Identical electrical and mechanical specifications allow both parts to function interchangeably in the same circuit and PCB layout. However, inventory management should track part numbers separately to maintain traceability and compliance documentation.

Q: What is the impact of the substitute's improved thermal resistance on circuit design?

A: The substitute's lower thermal resistance (15°C/W vs. 16°C/W) results in approximately 6% better heat dissipation at identical current levels. This improvement reduces junction temperature rise, extending component life and providing additional thermal margin in applications operating near maximum current ratings. No design changes are required; the improvement is a benefit.

Q: Are the moisture sensitivity levels identical?

A: Yes. Both parts carry MSL 2A (4 Weeks) ratings, indicating identical moisture sensitivity and identical storage, handling, and assembly requirements. No changes to moisture control procedures or bake-out protocols are necessary when transitioning between parts.