SPMWHT541MD5WAP0SD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAP0SD 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, delivering 34 lumens at 65mA test current with a forward voltage of 2.95V and 120° viewing angle.

The SPMWHT541MD5WAP0SD carries a "Not For New Designs" product status designation. This status indicates the component remains available in inventory but is no longer recommended for new product development. Identifying equivalent substitute parts ensures design continuity and supports long-term supply chain planning for existing applications.

Substiute Parts

SPMWHT541MD5WAP0SD

Samsung Semiconductor, Inc.In Stock: 798SPMWHT541MD5WAP0SD Datasheet

Current PartRFQ

SPMWHT541MP5WAP0S4

Samsung Semiconductor, Inc.In Stock: 886SPMWHT541MP5WAP0S4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAP0SD is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Color and correlated color temperature (CCT): White, Cool 6500K
• Forward voltage (Vf): 2.95V nominal
• Test current: 65mA
• Viewing angle: 120°
• CRI: 80
• Package format: 4-SMD, 5630 supplier device package
• Physical dimensions: 5.00mm × 3.00mm footprint
• RoHS compliance and MSL rating

Allowable Variation Parameters:

• Flux output: Within specification range (32–36 lm at 25°C, 65mA)
• Lumens/Watt efficiency: Acceptable within product line performance
• Maximum current rating: May vary between product variants
• Height (seated): Minor variations acceptable within assembly constraints
• Thermal resistance: Acceptable within thermal management design

The SPMWHT541MP5WAP0S4 (LM561B Plus variant) qualifies as a direct substitute based on matching all critical parameters while maintaining compatibility with existing PCB layouts, driver circuits, and thermal management systems.

Parameter Comparison

Engineering Selection Recommendations

SPMWHT541MD5WAP0SD (Original Part): The SPMWHT541MD5WAP0SD remains available with 767 units in stock. However, its "Not For New Designs" status indicates Samsung has transitioned this component to end-of-life status. This designation reflects Samsung's product lifecycle management and does not indicate functional deficiency. The part maintains full RoHS compliance and standard MSL rating. Selection of this part is appropriate for sustaining production of existing designs or for applications where inventory continuity is prioritized.

SPMWHT541MP5WAP0S4 (Substitute Part): The SPMWHT541MP5WAP0S4 carries "Active" product status and represents Samsung's current LM561B Plus product line. This variant maintains electrical compatibility with the original part across all critical parameters: identical color temperature (6500K), forward voltage (2.95V), test current (65mA), viewing angle (120°), and CRI (80). The substitute offers improved thermal characteristics (15°C/W versus 16°C/W) and higher maximum current rating (180mA versus 150mA). Physical footprint compatibility is confirmed (5.00mm × 3.00mm). Both parts carry identical RoHS compliance and MSL ratings. The SPMWHT541MP5WAP0S4 is the recommended selection for new product development and for replacement in existing designs where supply of the original part becomes constrained.

Frequently Asked Questions (FAQ)

Q: Can the SPMWHT541MP5WAP0S4 be used as a direct replacement for the SPMWHT541MD5WAP0SD in existing designs?

A: Yes. Both parts share identical electrical specifications at the test current of 65mA: 2.95V forward voltage, 6500K color temperature, 120° viewing angle, and 80 CRI. The 5630 package footprint and 5.00mm × 3.00mm dimensions are identical. PCB layouts, driver circuits, and thermal management designs require no modification. The substitute part is mechanically and electrically compatible.

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

A: Both designations refer to the 4-SMD 5630 package format. The terminology variation reflects Samsung's product documentation conventions between the original and Plus variants. The physical package, lead configuration, and PCB footprint remain identical. No design changes are required.

Q: How do the flux outputs compare between these parts?

A: The SPMWHT541MD5WAP0SD delivers 34 lumens (32–36 lm range) at 65mA and 25°C. The SPMWHT541MP5WAP0S4 delivers 33 lumens (32–34 lm range) at the same conditions. Both values fall within acceptable performance ranges for cool white 6500K LEDs in this package class. The 1-lumen difference represents normal manufacturing variation within the LM561B product family.

Q: What is the significance of the higher maximum current rating on the substitute part?

A: The SPMWHT541MP5WAP0S4 supports 180mA maximum current versus 150mA on the original part. This increased rating provides design flexibility for applications requiring higher brightness levels. However, at the standard 65mA test current, both parts operate identically. The higher rating does not affect compatibility with existing 65mA driver designs.

Q: Are there thermal management differences between these parts?

A: The SPMWHT541MP5WAP0S4 exhibits slightly improved thermal resistance (15°C/W versus 16°C/W). This 1°C/W improvement reflects incremental enhancements in the Plus variant. For most applications, this difference is negligible. Existing thermal designs remain valid for the substitute part.

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates Samsung's product lifecycle management decision to transition the LM561B standard variant to end-of-life status in favor of the LM561B Plus product line. The original part remains fully functional and available in inventory. The designation does not reflect performance issues but rather Samsung's strategic product portfolio management.

Q: Are both parts RoHS compliant?

A: Yes. Both the SPMWHT541MD5WAP0SD and SPMWHT541MP5WAP0S4 carry RoHS Compliant status and identical MSL 2A (4 Weeks) ratings. No compliance differences exist between the parts.