SPMWHT541MD5WATHSC LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WATHSC is a Samsung Semiconductor LM561B series white neutral LED with 4000K color temperature, designed for surface mount applications in 5630 package format. This component delivers 32lm at 65mA test current with 167 lm/W efficiency and 80 CRI. The part is marked as Not For New Designs, making identification of compatible substitutes essential for ongoing production and maintenance applications. The LM561B series provides a standardized platform for neutral white LED lighting across multiple product variants.

Substiute Parts

SPMWHT541MD5WATHSC

Samsung Semiconductor, Inc.In Stock: 791SPMWHT541MD5WATHSC Datasheet

Current PartRFQ

SPMWHT541MP5WATMS4

Samsung Semiconductor, Inc.In Stock: 600211SPMWHT541MP5WATMS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WATHSC is determined by strict alignment of electrical and mechanical parameters within the LM561B product family. The following criteria establish valid substitution:

Critical Matching Parameters:

• Color specification: White, Neutral
• CCT: 4000K
• Package type: 4-SMD, 5630 form factor
• Mounting: Surface Mount
• Viewing angle: 120°
• CRI: 80
• Thermal resistance: 16°C/W
• Moisture sensitivity: 2A (4 Weeks)

Allowable Variation Parameters:

• Flux output at test current: Range 30lm–34lm at 65mA
• Forward voltage: 2.95V nominal (typical specification)
• Maximum current rating: May exceed 150mA in substitute variants
• Lumens/Watt efficiency: May exceed 167 lm/W
• Height seated maximum: May be lower than 0.90mm
• Lead configuration: Flat leads acceptable (with or without exposed pad)

The SPMWHT541MP5WATMS4 qualifies as a direct substitute based on matching all critical parameters while offering improved performance characteristics in efficiency and current handling capacity.

Parameter Comparison

Engineering Selection Recommendations

SPMWHT541MP5WATMS4 as Primary Substitute:

The SPMWHT541MP5WATMS4 is the designated substitute for SPMWHT541MD5WATHSC based on the following engineering criteria:

1. Product Status Alignment: The substitute carries Active product status, whereas the main part is marked Not For New Designs. This transition ensures long-term supply continuity and manufacturing support.

2. Electrical Compatibility: Both parts operate at identical nominal forward voltage (2.95V) and test current (65mA). Flux output remains within the specified tolerance band (30–34lm), with the substitute delivering 33lm versus the main part's 32lm. This 1lm difference falls within normal manufacturing variation.

3. Mechanical Compatibility: Both components use identical 5630 package footprint (5.00mm x 3.00mm) and surface mount configuration. The substitute's reduced height (0.80mm vs. 0.90mm) presents no compatibility issues and may improve clearance in space-constrained layouts.

4. Performance Enhancement: The substitute offers improved efficiency (172 lm/W vs. 167 lm/W) and higher maximum current rating (180mA vs. 150mA), providing design margin for thermal and electrical stress conditions.

5. Compliance Status: The substitute achieves ROHS3 compliance, exceeding the main part's RoHS Compliant designation. Both maintain identical MSL 2A (4 Weeks) moisture sensitivity ratings.

6. Thermal Characteristics: Identical thermal resistance (16°C/W) ensures equivalent thermal performance in PCB layouts designed for the original component.

Selection Criteria for New Designs:

For applications currently using SPMWHT541MD5WATHSC, transition to SPMWHT541MP5WATMS4 is supported by direct parameter compatibility. No circuit redesign or thermal analysis revision is required. Existing PCB layouts, solder profiles, and assembly processes remain valid without modification.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WATMS4 be used as a direct replacement for SPMWHT541MD5WATHSC in existing assemblies?

A: Yes. Both components share identical electrical specifications at the test current (65mA, 2.95V), matching flux output tolerance (30–34lm), and identical package footprint (5630, 5.00mm x 3.00mm). The substitute's lower profile (0.80mm vs. 0.90mm) and higher current rating present no compatibility issues. PCB layouts, solder profiles, and assembly processes require no modification.

Q: What is the significance of the "Not For New Designs" status on SPMWHT541MD5WATHSC?

A: This designation indicates the part is in mature/legacy phase with limited future availability. Manufacturers typically apply this status when transitioning to improved variants. The SPMWHT541MP5WATMS4 (Active status) represents the current production equivalent, ensuring supply continuity for new designs and ongoing production.

Q: Are there differences in lead configuration between these parts?

A: The main part features 4-SMD with Flat Lead Exposed Pad configuration. The substitute uses 4-SMD with Flat Leads (without exposed pad designation). Both configurations are mechanically and electrically compatible for standard surface mount assembly. The exposed pad in the original part provides optional thermal enhancement; its absence in the substitute does not affect electrical performance given identical thermal resistance ratings (16°C/W).

Q: How do the efficiency ratings compare?

A: The substitute delivers 172 lm/W versus 167 lm/W for the main part—a 3% efficiency improvement. At the standard 65mA test current, this translates to 33lm output versus 32lm, both within the specified tolerance band (30–34lm). This improvement reflects manufacturing advances in the LM561B Plus variant.

Q: What is the maximum current difference, and does it affect circuit design?

A: The substitute supports 180mA maximum current versus 150mA for the main part. This 30mA increase provides additional design margin but does not require circuit modification. Existing designs operating at or below 150mA remain fully compatible. The higher rating accommodates more demanding applications without component change.

Q: Are moisture sensitivity and storage requirements identical?

A: Yes. Both components carry MSL 2A (4 Weeks) rating, requiring identical moisture control, baking procedures, and shelf-life management. No changes to component handling, storage, or assembly processes are necessary.

Q: Does the substitute meet the same RoHS requirements?

A: The main part is RoHS Compliant. The substitute achieves ROHS3 Compliant status, which represents an enhanced compliance standard. This upgrade ensures compatibility with current and future regulatory requirements without any restriction on use.

Q: Can these parts be mixed in the same production batch?

A: Yes. Both components meet identical electrical, mechanical, and thermal specifications at operating conditions. Mixed usage in the same assembly or production run presents no compatibility, performance, or reliability concerns. However, component traceability documentation should reflect the specific part number used in each unit.