SPMWHT541MD5WAPKS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAPKS3 is a Samsung Semiconductor LM561B series cool white LED (6500K) designed for surface mount lighting applications. This component operates at 2.95V forward voltage with a test current of 65mA, delivering 31 lumens at 162 lm/W efficiency. The device features a 120° viewing angle and is housed in a 4-SMD package with flat lead exposed pad configuration (5630 form factor).

The SPMWHT541MD5WAPKS3 carries a "Not For New Designs" product status, indicating Samsung has transitioned this model to end-of-life. This status necessitates identification of functionally equivalent substitute components for ongoing production requirements and design continuity.

Substiute Parts

SPMWHT541MD5WAPKS3

Samsung Semiconductor, Inc.In Stock: 1057SPMWHT541MD5WAPKS3 Datasheet

Current PartRFQ

SPMWHT541MP5WAPKS4

Samsung Semiconductor, Inc.In Stock: 48537SPMWHT541MP5WAPKS4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAPKS3 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Color Temperature (CCT): 6500K (cool white)
• Color: White, Cool
• Forward Voltage (Vf): 2.95V
• Test Current: 65mA
• Viewing Angle: 120°
• Package Type: 4-SMD configuration
• Supplier Device Package: 5630 form factor
• Physical Dimensions: 5.00mm × 3.00mm
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Luminous Flux: Within specification range (30–34 lm acceptable)
• Luminous Efficacy: Higher efficiency acceptable
• Maximum Current Rating: Equal or higher acceptable
• Height (Seated): Variation within 0.10mm acceptable
• Thermal Resistance: Lower values acceptable
• Product Status: Active status preferred for new inventory
• Compliance Certifications: RoHS3 acceptable as upgrade from RoHS Compliant

The SPMWHT541MP5WAPKS4 qualifies as a direct substitute based on identical electrical performance at rated conditions, matching package geometry, and compatible thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAPKS4

The SPMWHT541MP5WAPKS4 is the qualified substitute for SPMWHT541MD5WAPKS3 based on the following engineering criteria:

Electrical Compatibility: Both components operate at identical forward voltage (2.95V) and test current (65mA). The substitute delivers 33 lumens compared to 31 lumens in the original, representing a 6.5% increase in luminous output within acceptable tolerance bands. Luminous efficacy improves from 162 lm/W to 167 lm/W.

Thermal Performance: The SPMWHT541MP5WAPKS4 exhibits superior thermal characteristics with a thermal resistance of 15°C/W versus 16°C/W in the original part, providing improved heat dissipation in thermal-constrained applications.

Mechanical Compatibility: Both components share identical package dimensions (5.00mm × 3.00mm) and 5630 form factor. The substitute features a lower seated height (0.80mm versus 0.90mm), providing additional clearance in space-constrained PCB layouts.

Product Status and Compliance: The SPMWHT541MP5WAPKS4 carries Active product status with RoHS3 compliance, compared to the Not For New Designs status of the original part. This transition ensures long-term supply availability and alignment with current regulatory requirements.

Current Rating: The substitute supports a maximum current of 180mA versus 150mA in the original, providing additional operational margin without affecting performance at the 65mA test condition.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAPKS4 be used as a direct drop-in replacement for SPMWHT541MD5WAPKS3?

A: Yes. Both components share identical electrical specifications at rated operating conditions (2.95V, 65mA), matching package geometry (5630, 4-SMD), and compatible thermal characteristics. The substitute requires no circuit modifications.

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

A: Both designations refer to 4-SMD surface mount configurations with 5.00mm × 3.00mm footprints. The terminology variation reflects Samsung's product line evolution. Electrical and mechanical compatibility remains unchanged.

Q: Why does the substitute part deliver higher luminous flux (33lm vs 31lm)?

A: The SPMWHT541MP5WAPKS4 represents an improved generation within the LM561B Plus series. The higher flux output (33lm) falls within the acceptable tolerance range for 6500K cool white LEDs and reflects manufacturing process improvements. Both parts meet the same color temperature and CRI specifications.

Q: Is the lower height of SPMWHT541MP5WAPKS4 (0.80mm vs 0.90mm) a concern?

A: No. The lower seated height is a design improvement that provides additional clearance for PCB assembly and component placement. This does not affect electrical performance or thermal management.

Q: What is the significance of RoHS3 compliance on the substitute part?

A: RoHS3 represents an updated compliance standard that supersedes RoHS Compliant designation. The SPMWHT541MP5WAPKS4 meets current regulatory requirements for hazardous substance restrictions, ensuring compliance with evolving environmental standards.

Q: Are there any thermal management differences between these parts?

A: The SPMWHT541MP5WAPKS4 provides improved thermal performance with a thermal resistance of 15°C/W compared to 16°C/W in the original. This 1°C/W improvement enhances heat dissipation, particularly beneficial in high-density LED array applications.

Q: What is the inventory status of these components?

A: SPMWHT541MD5WAPKS3 has 947 pieces in stock with Not For New Designs status. SPMWHT541MP5WAPKS4 has 48,482 pieces in stock with Active product status, ensuring reliable long-term supply availability.

Q: Can the substitute support higher current applications?

A: The SPMWHT541MP5WAPKS4 supports maximum current of 180mA versus 150mA in the original. However, both components are rated for 65mA test current. Higher current operation requires thermal analysis specific to your application design.