SPMWHT541MP5WATUS5 LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WATUS5 is a Samsung Semiconductor LED lighting component from the LM561B Plus series. This surface-mount LED operates at neutral white 4000K color temperature with a forward voltage of 2.95V and test current of 65mA. The component is packaged in a 5630 4-SMD flat lead configuration with a 120° viewing angle.

The SPMWHT541MP5WATUS5 carries a product status of "Not For New Designs," indicating it is an obsolete or legacy component. Equivalent and substitute parts from the active product portfolio are available to support ongoing production requirements and design transitions.

Key Parameters

Parameter	Value	Unit
Series	LM561B Plus	—
Color	White, Neutral	—
CCT (Correlated Color Temperature)	4000K	K
Flux @ 25°C, 65mA Test Current	35lm (34–36lm range)	lm
Forward Voltage (Vf) Typical	2.95V	V
Test Current	65mA	mA
Maximum Current	180mA	mA
Lumens per Watt @ Test Current	182 lm/W	lm/W
CRI (Color Rendering Index)	80	—
Viewing Angle	120°	°
Package / Case	4-SMD, Flat Leads	—
Supplier Device Package	5630	—
Size / Dimension	5.00mm × 3.00mm	mm
Height – Seated (Max)	0.80mm	mm
Thermal Resistance of Package	15°C/W	°C/W
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MP5WATUS5 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Color: White, Neutral (4000K CCT)
Flux output: 35lm at 25°C, 65mA test current (34–36lm acceptable range)
CRI: 80 minimum
Viewing angle: 120°
Package: 4-SMD, Flat Leads (5630 form factor)
Mounting: Surface Mount
Physical dimensions: 5.00mm × 3.00mm, 0.80mm max height
Moisture Sensitivity: 2A (4 Weeks)

Secondary Compatibility Parameters:

Forward voltage (Vf): 2.75V to 2.95V range
Test current: 65mA nominal
Maximum current rating: 180mA or higher

Substitute parts are grouped into two series categories:

LM561B Plus Series (same series as main part): SPMWHT541MP5WAT0S5, SPMWHT541MP5WATKS5, SPMWHT541MP5WATMS5, SPMWHT541MP5WATNS5, SPMWHT541MP5WATSS5
- Identical forward voltage (2.95V)
- Identical thermal resistance (15°C/W)
- Active product status
LM561C Series (parametric equivalent): SPMWHT541ML5XAT0S5, SPMWHT541ML5XATKS5, SPMWHT541ML5XATMS5
- Lower forward voltage (2.75V)
- Improved thermal resistance (12°C/W)
- Higher efficiency (196 lm/W vs. 182 lm/W)
- Higher maximum current rating (200mA vs. 180mA)
- Active product status

All substitute parts maintain identical optical output (35lm), color temperature (4000K), CRI (80), viewing angle (120°), and physical package specifications.

Parameter Comparison

Part Number	Series	Product Status	Vf (Typ) [V]	Flux @ 65mA [lm]	Imax [mA]	Efficiency [lm/W]	Thermal Resistance [°C/W]	RoHS Status	Inventory [Pcs]
SPMWHT541MP5WATUS5	LM561B Plus	Not For New Designs	2.95	35 (34–36)	180	182	15	RoHS Compliant	25490
SPMWHT541MP5WAT0S5	LM561B Plus	Active	2.95	35 (34–36)	180	182	15	RoHS Compliant	5749
SPMWHT541MP5WATKS5	LM561B Plus	Active	2.95	35 (34–36)	180	183	15	RoHS Compliant	849
SPMWHT541MP5WATMS5	LM561B Plus	Active	2.95	35 (34–36)	180	182	15	ROHS3 Compliant	2088
SPMWHT541MP5WATNS5	LM561B Plus	Active	2.95	35 (34–36)	180	182	15	RoHS Compliant	798
SPMWHT541MP5WATSS5	LM561B Plus	Active	2.95	35 (34–36)	180	183	14	ROHS3 Compliant	1157
SPMWHT541ML5XAT0S5	LM561C	Active	2.75	35 (34–36)	200	196	12	ROHS3 Compliant	14120
SPMWHT541ML5XATKS5	LM561C	Active	2.75	35 (34–36)	200	196	12	RoHS Compliant	680
SPMWHT541ML5XATMS5	LM561C	Active	2.75	35 (34–36)	200	196	12	ROHS3 Compliant	25846

Engineering Selection Recommendations

For Direct Series Replacement (LM561B Plus):

Select from SPMWHT541MP5WAT0S5, SPMWHT541MP5WATKS5, SPMWHT541MP5WATMS5, SPMWHT541MP5WATNS5, or SPMWHT541MP5WATSS5 when the design requires identical electrical characteristics and thermal performance to the obsolete SPMWHT541MP5WATUS5. All five parts are in active product status and maintain the same forward voltage (2.95V), thermal resistance (15°C/W), and maximum current rating (180mA).

SPMWHT541MP5WATMS5 and SPMWHT541MP5WATSS5 carry ROHS3 compliance certification, providing enhanced regulatory alignment for new production batches. SPMWHT541MP5WATMS5 offers the highest inventory availability (25,846 pcs) among LM561B Plus alternatives.

For Parametric Equivalent Substitution (LM561C Series):

Select from SPMWHT541ML5XAT0S5, SPMWHT541ML5XATKS5, or SPMWHT541ML5XATMS5 when design flexibility permits acceptance of lower forward voltage (2.75V vs. 2.95V), improved thermal performance (12°C/W vs. 15°C/W), and higher maximum current rating (200mA vs. 180mA). The LM561C series delivers identical optical output and color characteristics while offering superior efficiency (196 lm/W vs. 182 lm/W).

All LM561C alternatives are in active product status. SPMWHT541ML5XATMS5 provides the highest inventory availability (25,846 pcs) and ROHS3 compliance.

Compliance Considerations:

All substitute parts maintain RoHS compliance. Parts designated ROHS3 Compliant (SPMWHT541MP5WATMS5, SPMWHT541MP5WATSS5, SPMWHT541ML5XAT0S5, SPMWHT541ML5XATMS5) satisfy enhanced regulatory requirements for new design implementations.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP5WATUS5 be directly replaced with any LM561B Plus variant?

A: Yes. All LM561B Plus variants (SPMWHT541MP5WAT0S5, SPMWHT541MP5WATKS5, SPMWHT541MP5WATMS5, SPMWHT541MP5WATNS5, SPMWHT541MP5WATSS5) are direct electrical and mechanical equivalents. They share identical forward voltage (2.95V), thermal resistance (15°C/W), optical output (35lm), and package specifications. The primary difference is product status (all are active) and compliance certifications.

Q: What is the difference between LM561B Plus and LM561C series substitutes?

A: LM561C series parts are parametric equivalents with three key differences: lower forward voltage (2.75V vs. 2.95V), improved thermal resistance (12°C/W vs. 15°C/W), and higher maximum current rating (200mA vs. 180mA). Optical output, color temperature, CRI, viewing angle, and physical package remain identical. LM561C offers superior efficiency (196 lm/W vs. 182 lm/W).

Q: Are there any circuit design considerations when switching from LM561B Plus to LM561C?

A: The lower forward voltage of LM561C (2.75V vs. 2.95V) results in approximately 0.2V less voltage drop across the LED. Designs using current-limiting resistors or constant-current drivers must account for this 200mV difference to maintain the same 65mA test current. The improved thermal resistance of LM561C may also allow higher operating currents within the 200mA maximum rating.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts use identical 4-SMD flat lead packaging (5630 form factor) with dimensions of 5.00mm × 3.00mm and maximum seated height of 0.80mm. All are surface-mount components with identical moisture sensitivity level (2A, 4 weeks).

Q: Which substitute part offers the best inventory availability?

A: SPMWHT541ML5XATMS5 (LM561C series) and SPMWHT541MP5WATMS5 (LM561B Plus series) both offer 25,846 pcs and 2,088 pcs respectively. SPMWHT541ML5XATMS5 provides the highest total inventory among all active substitutes.

Q: What is the significance of ROHS3 compliance versus standard RoHS compliance?

A: ROHS3 Compliant parts meet enhanced regulatory requirements beyond standard RoHS certification. Parts marked ROHS3 Compliant (SPMWHT541MP5WATMS5, SPMWHT541MP5WATSS5, SPMWHT541ML5XAT0S5, SPMWHT541ML5XATMS5) are recommended for new design implementations and markets with stricter environmental regulations.

Q: Can SPMWHT541MP5WATUS5 be used interchangeably with substitute parts in existing production?

A: The SPMWHT541MP5WATUS5 carries "Not For New Designs" status, indicating it is obsolete. While existing inventory may be used to complete current production runs, all new designs and future production should transition to active substitute parts. LM561B Plus variants provide identical performance; LM561C variants offer improved efficiency and thermal characteristics.

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