SPMWHT541MP5WAUNS5 Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WAUNS5 is a Samsung Semiconductor LM561B Plus white warm LED in 5630 package format, rated for 3500K color temperature with 65mA test current and 2.95V forward voltage. This surface mount LED is designed for general illumination applications requiring warm white light output at 34 lumens with 80 CRI.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible LED series with equivalent optical and electrical performance characteristics.

Key Parameters

Parameter	Value	Unit
Series	LM561B Plus	—
Color	White, Warm	—
CCT (Correlated Color Temperature)	3500K	K
Flux @ 25°C, 65mA	34	lm
Forward Voltage (Vf) Typical	2.95	V
Test Current	65	mA
Maximum Current	180	mA
Lumens per Watt	177	lm/W
CRI (Color Rendering Index)	80	—
Viewing Angle	120	°
Package / Case	4-SMD, Flat Leads	—
Supplier Device Package	5630	—
Size	5.00 × 3.00	mm
Height - Seated (Max)	0.80	mm
Thermal Resistance	15	°C/W
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MP5WAUNS5 is determined by the following critical parameters:

Optical Compatibility: Color temperature (CCT), color rendering index (CRI), and luminous flux must remain within specified ranges. The main part operates at 3500K with 80 CRI and 34 lumens at 65mA test current.

Electrical Compatibility: Forward voltage, test current, and maximum current ratings must support the intended circuit design. The main part specifies 2.95V typical forward voltage at 65mA test current with 180mA maximum rating.

Mechanical Compatibility: Package type (4-SMD, Flat Leads), supplier device package (5630), physical dimensions (5.00mm × 3.00mm), and height (0.80mm maximum) must match PCB layout requirements.

Thermal Characteristics: Thermal resistance of 15°C/W affects heat dissipation performance in the application circuit.

Packaging Format: The main part is supplied in Tape & Reel (TR) format. Substitutes in Cut Tape (CT) or alternative TR configurations are functionally equivalent but differ in supply format.

Compliance and Status: RoHS compliance and product status (Active vs. Not For New Designs) affect long-term availability and regulatory requirements.

Substitute parts are grouped into two categories:

LM561B Plus Series (3500K and 3000K variants): Same series with identical electrical characteristics (2.95V, 180mA max), varying only in color temperature and packaging format.
LM561C Series (3500K and 3000K variants): Alternative series with lower forward voltage (2.75V), higher maximum current (200mA), improved thermal resistance (12°C/W), and higher efficiency (190 lm/W), maintaining identical optical output and mechanical form factor.

Parameter Comparison

Part Number	Series	CCT (K)	Vf (V)	Test Current (mA)	Max Current (mA)	Flux @ 25°C (lm)	lm/W	Thermal Resistance (°C/W)	Packaging	Product Status
SPMWHT541MP5WAUNS5	LM561B Plus	3500	2.95	65	180	34	177	15	TR	Active
SPMWHT541ML5XAU0S5	LM561C	3500	2.75	65	200	34	190	12	CT	Active
SPMWHT541ML5XAUMS5	LM561C	3500	2.75	65	200	34	190	12	TR	Active
SPMWHT541ML5XAV0S5	LM561C	3000	2.75	65	200	34	190	12	TR	Active
SPMWHT541ML5XAVMS5	LM561C	3000	2.75	65	200	34	190	12	TR	Active
SPMWHT541MP5WAU0S5	LM561B Plus	3500	2.95	65	180	34	177	15	TR	Active
SPMWHT541MP5WAUUS5	LM561B Plus	3500	2.95	65	180	34	177	15	TR	Not For New Designs
SPMWHT541MP5WAVMS5	LM561B Plus	3000	2.95	65	180	34	177	15	TR	Active
SPMWHT541MP5WAVUS5	LM561B Plus	3000	2.95	65	180	34	177	15	TR	Not For New Designs

Engineering Selection Recommendations

For Active Product Status Applications: Select SPMWHT541MP5WAUNS5 (main part), SPMWHT541MP5WAU0S5, or SPMWHT541MP5WAVMS5 from the LM561B Plus series. These parts carry Active product status, ensuring continued availability and support for new designs.

For 3500K Color Temperature Requirement: SPMWHT541MP5WAUNS5, SPMWHT541MP5WAU0S5, SPMWHT541MP5WAUUS5, SPMWHT541ML5XAUMS5, and SPMWHT541ML5XAU0S5 maintain the 3500K specification. The LM561C variants (SPMWHT541ML5XAUMS5 and SPMWHT541ML5XAU0S5) offer improved thermal resistance and efficiency at the cost of lower forward voltage.

For 3000K Color Temperature Requirement: SPMWHT541MP5WAVMS5, SPMWHT541MP5WAVUS5, SPMWHT541ML5XAV0S5, and SPMWHT541ML5XAVMS5 provide 3000K operation. SPMWHT541MP5WAVMS5 is Active status; SPMWHT541ML5XAVMS5 offers superior thermal and efficiency characteristics.

For Tape & Reel Packaging: All substitute parts except SPMWHT541ML5XAU0S5 are supplied in TR format, matching the main part's packaging specification.

For RoHS3 Compliance: SPMWHT541MP5WAU0S5, SPMWHT541ML5XAUMS5, SPMWHT541ML5XAVMS5, and SPMWHT541MP5WAVMS5 carry ROHS3 certification, providing enhanced regulatory compliance documentation.

For Thermal Performance: LM561C series parts (SPMWHT541ML5XAU0S5, SPMWHT541ML5XAUMS5, SPMWHT541ML5XAV0S5, SPMWHT541ML5XAVMS5) deliver 12°C/W thermal resistance compared to 15°C/W for LM561B Plus variants, reducing junction temperature rise by 3°C/W.

For Efficiency: LM561C series parts deliver 190 lm/W versus 177 lm/W for LM561B Plus, representing 7.3% higher luminous efficacy at identical flux output.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541ML5XAUMS5 (LM561C) directly replace SPMWHT541MP5WAUNS5 (LM561B Plus)?

A: Yes, for applications where forward voltage tolerance permits. Both parts deliver identical 34 lumens at 65mA test current, 120° viewing angle, and 80 CRI. The LM561C operates at 2.75V versus 2.95V, reducing circuit voltage drop by 0.20V. Maximum current rating increases from 180mA to 200mA. Thermal resistance improves from 15°C/W to 12°C/W. Verify circuit design accommodates the lower forward voltage before substitution.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Both formats contain identical LED components. Cut Tape supplies individual strips of components, suitable for manual assembly or small-volume production. Tape & Reel supplies components on continuous reels for automated pick-and-place assembly. The main part SPMWHT541MP5WAUNS5 uses TR format. SPMWHT541ML5XAU0S5 uses CT format; all other substitutes use TR format.

Q: Why does SPMWHT541MP5WAUUS5 show "Not For New Designs" status?

A: Parts marked "Not For New Designs" remain available for existing production but are not recommended for new product development. These parts may have limited future availability or have been superseded by improved variants. For new designs, select parts with Active status: SPMWHT541MP5WAUNS5, SPMWHT541MP5WAU0S5, SPMWHT541MP5WAVMS5, or LM561C series alternatives.

Q: Can I substitute a 3000K part for a 3500K requirement?

A: No. Color temperature is a critical optical parameter. 3000K (warmer) and 3500K (cooler) produce visibly different light appearance. SPMWHT541MP5WAVMS5 and SPMWHT541MP5WAVUS5 operate at 3000K and are not interchangeable with 3500K parts for applications requiring specific color temperature.

Q: What is the significance of CRI 80 across all parts?

A: CRI (Color Rendering Index) of 80 indicates these LEDs render colors with 80% fidelity compared to a reference light source. All listed parts maintain CRI 80, ensuring consistent color rendering performance across substitutions.

Q: How does thermal resistance affect LED performance?

A: Thermal resistance (°C/W) determines junction temperature rise above ambient for a given power dissipation. Lower thermal resistance reduces heat buildup. LM561C parts at 12°C/W dissipate heat more efficiently than LM561B Plus at 15°C/W. In high-ambient or thermally constrained applications, LM561C variants extend LED lifespan and maintain stable light output.

Q: Are all parts RoHS compliant?

A: Yes. All listed parts carry either RoHS or ROHS3 compliance certification. SPMWHT541MP5WAU0S5, SPMWHT541ML5XAUMS5, SPMWHT541ML5XAVMS5, and SPMWHT541MP5WAVMS5 specify ROHS3 compliance. Remaining parts specify RoHS compliance. Both certifications meet regulatory requirements for hazardous substance restrictions.

Q: What is Moisture Sensitivity Level (MSL) 2A?

A: MSL 2A indicates the component can be stored in dry conditions for up to 4 weeks before soldering. After 4 weeks of exposure to ambient humidity, the component requires baking at specified temperature and duration before assembly to prevent moisture-induced solder joint failures. All listed parts carry identical MSL 2A (4 Weeks) specification.

Q: Can I use SPMWHT541MP5WAVMS5 (3000K) in a circuit designed for SPMWHT541MP5WAUNS5 (3500K)?

A: Electrically, yes—both are LM561B Plus with identical 2.95V forward voltage, 65mA test current, and 180mA maximum current. Optically, no—the 500K color temperature difference produces noticeably warmer light. Substitution is valid only if the application permits 3000K operation or if color temperature adjustment is acceptable.

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