SPMWHT541MD5WAUHS2 Equivalent & Substitute Parts

Part Overview

The SPMWHT541MD5WAUHS2 is a Samsung Semiconductor LM561B series warm white LED in 5630 surface mount package configuration. This component is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. The part delivers warm white light at 3500K color temperature with a forward voltage of 2.9V at 65mA test current, suitable for general illumination applications requiring surface mount integration.

Due to its discontinued design status, identifying functionally equivalent substitute components is necessary for ongoing production support, maintenance applications, and design continuity where this LED specification remains applicable.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Color Temperature (CCT)	3500K	K	Critical - must match for color consistency
Color	White, Warm	-	Critical - defines light output characteristics
Forward Voltage (Vf) Typical	2.9V	V	Critical - determines circuit compatibility
Test Current	65mA	mA	Critical - reference operating point
Maximum Current	150mA	mA	Important - defines safe operating range
Package Type	4-SMD, Flat Lead Exposed Pad	-	Critical - mechanical and thermal interface
Supplier Device Package	5630	-	Critical - footprint compatibility
Size/Dimension	5.00mm x 3.00mm	mm	Critical - PCB layout compatibility
Height - Seated (Max)	0.90mm	mm	Important - clearance and assembly considerations
Thermal Resistance	16°C/W	°C/W	Important - thermal management capability
Mounting Type	Surface Mount	-	Critical - assembly process compatibility
RoHS Status	RoHS Compliant	-	Important - regulatory compliance
MSL Rating	2A (4 Weeks)	-	Important - moisture handling requirements

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MD5WAUHS2 is determined by strict alignment of the following critical parameters:

Color and Color Temperature: The substitute must deliver warm white light at 3500K to maintain color consistency in the application. This parameter is non-negotiable for visual output compatibility.

Electrical Characteristics: Forward voltage (Vf) and test current must remain within acceptable tolerance ranges to ensure circuit compatibility without redesign. The substitute SPMWHT541MP5WAU0S5 operates at 2.95V typical, representing a 0.05V variance from the original 2.9V specification, which falls within acceptable tolerance for most LED driver circuits.

Package and Footprint: Both the package type (4-SMD, Flat Lead) and supplier device package designation (5630) must match exactly. Physical dimensions of 5.00mm x 3.00mm are identical between the main part and substitute, ensuring PCB layout compatibility without modification.

Mounting Technology: Surface mount compatibility is maintained across all substitute candidates, preserving assembly process compatibility.

Regulatory Compliance: RoHS compliance status must be maintained or upgraded. The substitute SPMWHT541MP5WAU0S5 carries ROHS3 compliance, representing an upgrade from the original RoHS Compliant designation.

Product Status: While the main part is "Not For New Designs," the substitute SPMWHT541MP5WAU0S5 carries "Active" status, indicating ongoing availability and manufacturing support.

Parameter Comparison

Parameter	SPMWHT541MD5WAUHS2 (Main)	SPMWHT541MP5WAU0S5 (Substitute)	Compatibility Notes
Series	LM561B	LM561B Plus	Same base series with enhanced variant
Color	White, Warm	White, Warm	Identical
CCT (K)	3500K	3500K	Identical
Vf (Typ)	2.9V	2.95V	+0.05V variance, acceptable
Test Current	65mA	65mA	Identical
Current - Max	150mA	180mA	Substitute rated higher, compatible
Package/Case	4-SMD, Flat Lead Exposed Pad	4-SMD, Flat Leads	Functionally equivalent, minor lead configuration difference
Supplier Device Package	5630	5630	Identical
Size/Dimension	5.00mm x 3.00mm	5.00mm x 3.00mm	Identical
Height - Seated (Max)	0.90mm	0.80mm	Substitute 0.10mm lower, compatible
Thermal Resistance	16°C/W	15°C/W	Substitute 1°C/W better, compatible
RoHS Status	RoHS Compliant	ROHS3 Compliant	Upgraded compliance level
MSL Rating	2A (4 Weeks)	2A (4 Weeks)	Identical
Product Status	Not For New Designs	Active	Substitute actively manufactured

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP5WAU0S5

The SPMWHT541MP5WAU0S5 is the direct equivalent substitute for SPMWHT541MD5WAUHS2. This substitution is supported by:

Electrical Compatibility: The forward voltage variance of +0.05V (2.95V vs. 2.9V) is within standard LED tolerance ranges and does not require circuit redesign. Both parts operate at identical 65mA test current, ensuring consistent performance in existing driver circuits.

Physical Compatibility: Identical 5630 package footprint and 5.00mm x 3.00mm dimensions ensure direct PCB layout compatibility. The substitute's reduced height (0.80mm vs. 0.90mm) provides improved clearance margins without creating assembly conflicts.

Thermal Performance: The substitute's improved thermal resistance (15°C/W vs. 16°C/W) provides enhanced heat dissipation capability, supporting reliable long-term operation.

Regulatory Status: ROHS3 compliance of the substitute exceeds the original RoHS Compliant designation, ensuring compliance with current and future regulatory requirements.

Availability: Active product status of SPMWHT541MP5WAU0S5 ensures ongoing manufacturing support and supply chain reliability, addressing the end-of-life status of the original part.

Color Temperature Consistency: Identical 3500K warm white specification maintains color output consistency across production batches and design iterations.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WAU0S5 be used as a direct replacement without circuit modification?

A: Yes. The forward voltage difference of 0.05V falls within standard LED operating tolerances. Existing LED driver circuits designed for SPMWHT541MD5WAUHS2 will operate the substitute without modification. Both parts share identical test current specifications (65mA) and color temperature (3500K).

Q: What is the significance of the "Plus" designation in SPMWHT541MP5WAU0S5?

A: The "Plus" designation indicates an enhanced variant within the LM561B series. This variant incorporates improved thermal characteristics (15°C/W vs. 16°C/W) and higher maximum current rating (180mA vs. 150mA) while maintaining identical color temperature and forward voltage compatibility with the original part.

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

A: The main part specifies "4-SMD, Flat Lead Exposed Pad" while the substitute specifies "4-SMD, Flat Leads." Both configurations are functionally equivalent for 5630 package applications. The exposed pad in the original part provides enhanced thermal performance, which the substitute compensates for through improved thermal resistance rating.

Q: Does the 0.10mm height difference affect PCB assembly?

A: No. The substitute's reduced height (0.80mm vs. 0.90mm) provides additional clearance margin without creating assembly conflicts. This reduction is beneficial for applications with tight vertical space constraints.

Q: Is the RoHS compliance upgrade from RoHS Compliant to ROHS3 Compliant significant?

A: Yes. ROHS3 compliance represents an upgraded regulatory status that ensures compatibility with current and anticipated future environmental regulations. This upgrade provides extended compliance assurance for long-term production and supply chain continuity.

Q: What is the inventory status difference between these parts?

A: SPMWHT541MD5WAUHS2 shows 663 pieces in stock with "Not For New Designs" status, indicating limited availability and no ongoing manufacturing. SPMWHT541MP5WAU0S5 shows 3192 pieces in stock with "Active" status, indicating robust supply chain support and ongoing production.

Q: Can multiple substitute parts from the SPMWHT541 base product family be used interchangeably?

A: Substitution must be limited to parts meeting all critical parameters: identical color temperature (3500K), compatible forward voltage (within tolerance), matching package type (5630), and identical physical dimensions. Only SPMWHT541MP5WAU0S5 meets all these criteria for direct substitution of SPMWHT541MD5WAUHS2.

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