SPMWHT541MD5WAW0SC LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAW0SC is a Samsung Semiconductor LM561B series warm white LED designed for surface mount applications. This component operates at 2700K color temperature with a forward voltage of 2.95V and test current of 65mA, delivering 30lm at 25°C. The part is classified as "Not For New Designs," making identification of functionally equivalent alternatives essential for ongoing production and maintenance applications where this LED remains in active use.

Substiute Parts

SPMWHT541MD5WAW0SC

Samsung Semiconductor, Inc.In Stock: 906SPMWHT541MD5WAW0SC Datasheet

Current PartRFQ

SPMWHT541MP5WAWMS4

Samsung Semiconductor, Inc.In Stock: 26064SPMWHT541MP5WAWMS4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAW0SC is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Color and CCT: White, Warm 2700K (exact match required)
• Forward Voltage (Vf): 2.95V nominal (determines circuit compatibility)
• Test Current: 65mA (baseline operating point)
• CRI: 80 (color rendering specification)
• Viewing Angle: 120° (optical performance)
• Package Type: 4-SMD, 5630 form factor (PCB footprint compatibility)
• RoHS Compliance: Required for regulatory alignment

Allowable Variation Parameters:

• Flux output: Tolerance range 28lm–32lm at 25°C, 65mA test current
• Lumens/Watt efficiency: May vary within product line improvements
• Current - Max rating: May increase in newer product variants
• Thermal Resistance: Minor improvements acceptable (lower values beneficial)
• Height and dimensional tolerances: Within SMD assembly specifications
• Product Status: Active status preferred for new inventory; "Not For New Designs" acceptable for direct replacement

The SPMWHT541MP5WAWMS4 qualifies as a substitute based on identical electrical performance at the test point, matching color temperature, CRI, and package footprint, while offering improved efficiency and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Basis:

The SPMWHT541MP5WAWMS4 is a direct electrical substitute for the SPMWHT541MD5WAW0SC. Both components share identical forward voltage (2.95V), test current (65mA), color temperature (2700K), CRI (80), and viewing angle (120°). Circuit designs using the main part number will function identically with the substitute without modification.

Compliance and Status Considerations:

The SPMWHT541MP5WAWMS4 carries Active product status, whereas the main part is designated "Not For New Designs." For applications requiring ongoing component sourcing, the substitute offers superior long-term availability. Both parts maintain RoHS compliance and identical moisture sensitivity levels (MSL 2A, 4 Weeks), ensuring equivalent handling and storage requirements.

Performance Improvements:

The substitute delivers measurable enhancements: luminous efficiency increases from 156 lm/W to 162 lm/W, maximum current rating improves from 150mA to 180mA, thermal resistance decreases from 16°C/W to 15°C/W, and seated height reduces from 0.90mm to 0.80mm. These improvements do not alter functional compatibility but provide operational margin and thermal performance benefits.

Dimensional Consideration:

The substitute length increases from 5.00mm to 5.60mm. PCB layouts with tight horizontal spacing constraints must be evaluated. The height reduction (0.90mm to 0.80mm) is universally beneficial for clearance-limited applications.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAWMS4 replace SPMWHT541MD5WAW0SC without circuit modification?

A: Yes. Both components operate at identical forward voltage (2.95V) and test current (65mA). No circuit changes are required. The substitute is a direct electrical replacement.

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

A: Both are 4-SMD 5630 form factors with compatible PCB footprints. The exposed pad variant provides enhanced thermal dissipation through direct substrate contact. The flat leads variant achieves similar thermal performance through the 15°C/W rating. Both are suitable for standard SMD assembly processes.

Q: Does the 0.60mm length increase (5.00mm to 5.60mm) affect PCB compatibility?

A: PCB footprints designed for the 5630 package accommodate both dimensions. Verify available horizontal spacing in layouts with component density constraints. The substitute's reduced height (0.80mm vs. 0.90mm) provides additional clearance benefit.

Q: Are the flux output ranges compatible?

A: Yes. The main part specifies 30lm (28–32lm range) and the substitute specifies 31lm (30–32lm range) at identical test conditions (25°C, 65mA). Both fall within acceptable warm white LED performance for 2700K applications. The substitute's higher nominal output (31lm) represents product line improvement.

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

A: This designation indicates Samsung has transitioned the LM561B standard variant to the LM561B Plus line. The substitute (SPMWHT541MP5WAWMS4) represents the current active product. For new designs, the substitute is the recommended choice. For existing production using the main part, the substitute provides a compatible upgrade path with improved specifications.

Q: Are storage and handling requirements identical?

A: Yes. Both components carry MSL 2A (4 Weeks) moisture sensitivity levels. Identical desiccant storage, bake-out procedures, and shelf-life management apply to both parts.

Q: Does the improved thermal resistance (15°C/W vs. 16°C/W) require thermal design changes?

A: No. The 1°C/W improvement is a benefit that reduces junction temperature under identical operating conditions. Existing thermal designs remain valid; the substitute provides additional thermal margin.