SPMWHT541MP5WATHSD LED Equivalent & Substitute Parts

Part Overview

The SPMWHT541MP5WATHSD is a Samsung Semiconductor LM561B Plus white neutral 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 34 lumens at 65mA test current with a forward voltage of 2.95V and 120° viewing angle. Due to its discontinued status, equivalent substitute parts from the active LM561B Plus and LM561C series are available to maintain design continuity and ensure supply chain reliability for existing applications.

Key Parameters

Parameter	Value	Unit
Series	LM561B Plus	—
Color	White, Neutral	—
CCT (Correlated Color Temperature)	4000K	K
Flux @ 25°C, 65mA Test Current	34 lm (32–36 lm range)	lm
Forward Voltage (Vf) Typical	2.95V	V
Test Current	65mA	mA
Maximum Current	180mA	mA
Lumens/Watt @ 65mA	177 lm/W	lm/W
CRI (Color Rendering Index)	80	—
Viewing Angle	120°	—
Package Type	4-SMD, Flat Leads	—
Supplier Device Package	5630	—
Dimensions	5.00mm L × 3.00mm W	mm
Height (Seated, Max)	0.80mm	mm
Thermal Resistance	16°C/W	°C/W
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—
MSL (Moisture Sensitivity Level)	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitution eligibility for SPMWHT541MP5WATHSD is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

Color: White, Neutral (4000K CCT)
Flux output: 34 lm nominal (32–36 lm acceptable range)
Test current: 65mA
Maximum current rating: 180mA
Viewing angle: 120°
Package: 4-SMD, Flat Leads (5630)
Physical dimensions: 5.00mm × 3.00mm, 0.80mm height
Mounting: Surface Mount
Compliance: RoHS Compliant, MSL 2A

Substitution Categories:

Category 1: Direct Series Equivalent (LM561B Plus) SPMWHT541MP5WAT0S5 maintains identical electrical performance within the LM561B Plus series. This part is Active status and represents the primary substitute for the discontinued SPMWHT541MP5WATHSD.

Category 2: Parametric Equivalents (LM561C Series) SPMWHT541ML5XAT0S0, SPMWHT541ML5XATKS0, and SPMWHT541ML5XATMS0 are LM561C series parts that meet all flux, current, and package requirements. These parts differ in forward voltage specification (2.75V or 2.8V versus 2.95V) but deliver equivalent luminous output and efficiency within acceptable design tolerances. All three are Active status.

Parameter Comparison

Parameter	SPMWHT541MP5WATHSD (Main)	SPMWHT541MP5WAT0S5 (Direct Equivalent)	SPMWHT541ML5XAT0S0 (Parametric Equivalent)	SPMWHT541ML5XATKS0 (Parametric Equivalent)	SPMWHT541ML5XATMS0 (Parametric Equivalent)
Manufacturer	Samsung Semiconductor, Inc.	Samsung Semiconductor, Inc.	Samsung Semiconductor, Inc.	Samsung Semiconductor, Inc.	Samsung Semiconductor, Inc.
Series	LM561B Plus	LM561B Plus	LM561C	LM561C	LM561C
Product Status	Not For New Designs	Active	Active	Active	Active
Color / CCT	White, Neutral / 4000K	White, Neutral / 4000K	White, Neutral / 4000K	White, Neutral / 4000K	White, Neutral / 4000K
Flux @ 25°C, 65mA	34 lm (32–36 lm)	35 lm (34–36 lm)	34 lm (32–36 lm)	34 lm (32–36 lm)	34 lm (32–36 lm)
Forward Voltage (Vf) Typical	2.95V	2.95V	2.75V	2.75V	2.8V
Test Current	65mA	65mA	65mA	65mA	65mA
Maximum Current	180mA	180mA	180mA	180mA	180mA
Lumens/Watt @ 65mA	177 lm/W	182 lm/W	190 lm/W	190 lm/W	187 lm/W
CRI	80	80	80	80	80
Viewing Angle	120°	120°	120°	120°	120°
Package / Case	4-SMD, Flat Leads	4-SMD, Flat Leads	4-SMD, Flat Leads	4-SMD, Flat Leads	4-SMD, Flat Leads
Supplier Device Package	5630	5630	5630	5630	5630
Dimensions	5.00mm × 3.00mm	5.00mm × 3.00mm	5.00mm × 3.00mm	5.00mm × 3.00mm	5.00mm × 3.00mm
Height (Seated, Max)	0.80mm	0.80mm	0.80mm	0.80mm	0.80mm
Thermal Resistance	16°C/W	15°C/W	12°C/W	12°C/W	12°C/W
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
MSL	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)
Inventory Status	696 Pcs	5749 Pcs	909 Pcs	769 Pcs	33730 Pcs

Engineering Selection Recommendations

For Direct Replacement (Preferred): SPMWHT541MP5WAT0S5 is the primary substitute. This part maintains LM561B Plus series continuity with identical forward voltage (2.95V) and superior inventory availability (5749 units). Active product status ensures long-term supply chain stability. Thermal resistance improvement (15°C/W versus 16°C/W) provides marginal thermal performance benefit.

For Parametric Substitution (LM561C Series): SPMWHT541ML5XATMS0 is the recommended parametric equivalent due to highest inventory availability (33730 units) and established supply chain presence. Forward voltage of 2.8V is within acceptable tolerance for 4000K neutral white LED applications. Thermal resistance of 12°C/W represents significant improvement over the main part. Lumens/Watt efficiency of 187 lm/W exceeds the main part specification.

SPMWHT541ML5XAT0S0 and SPMWHT541ML5XATKS0 are functionally equivalent alternatives with identical electrical performance (2.75V Vf, 190 lm/W efficiency, 12°C/W thermal resistance) but lower inventory levels. Selection between these two LM561C variants is interchangeable based on procurement availability.

Compliance Verification: All substitute parts maintain RoHS Compliance and MSL 2A (4 Weeks) rating, ensuring compatibility with standard surface mount assembly processes and storage requirements.

Frequently Asked Questions (FAQ)

Q1: Can SPMWHT541MP5WAT0S5 be used as a direct drop-in replacement for SPMWHT541MP5WATHSD?

A: Yes. SPMWHT541MP5WAT0S5 is a direct equivalent within the LM561B Plus series. Both parts share identical forward voltage (2.95V), flux output (34 lm nominal), test current (65mA), maximum current (180mA), viewing angle (120°), and 5630 package configuration. The substitute has Active product status, ensuring continued availability.

Q2: What is the difference between LM561B Plus and LM561C series substitutes?

A: Both series deliver equivalent luminous output (34 lm at 65mA) and maintain identical package, dimensions, and viewing angle specifications. The primary difference is forward voltage: LM561B Plus operates at 2.95V, while LM561C operates at 2.75V or 2.8V depending on part number suffix. LM561C series also provides improved thermal resistance (12°C/W versus 16°C/W for the main part) and higher lumens/watt efficiency (187–190 lm/W versus 177 lm/W).

Q3: Are there any circuit design considerations when switching from SPMWHT541MP5WATHSD to LM561C series parts?

A: Forward voltage differences (0.15V to 0.20V lower for LM561C) may require minor current-limiting resistor adjustment in constant-voltage driver circuits. Constant-current driver circuits require no modification. Verify driver compliance with the lower voltage specification before implementation.

Q4: Which substitute part offers the best thermal performance?

A: SPMWHT541ML5XAT0S0, SPMWHT541ML5XATKS0, and SPMWHT541ML5XATMS0 all provide thermal resistance of 12°C/W, compared to 16°C/W for the main part. This represents a 25% improvement in thermal performance. SPMWHT541ML5XATMS0 is recommended due to superior inventory availability.

Q5: Do all substitute parts meet the same RoHS and MSL requirements?

A: Yes. All substitute parts are RoHS Compliant and carry MSL 2A (4 Weeks) rating, matching the main part specification. No additional handling or storage protocol changes are required.

Q6: What is the inventory status for each substitute?

A: SPMWHT541MP5WAT0S5 (5749 units), SPMWHT541ML5XATMS0 (33730 units), SPMWHT541ML5XAT0S0 (909 units), and SPMWHT541ML5XATKS0 (769 units). SPMWHT541ML5XATMS0 offers the highest availability for volume production requirements.

Q7: Can SPMWHT541ML5XATMS0 be used interchangeably with SPMWHT541ML5XAT0S0 and SPMWHT541ML5XATKS0?

A: Yes. All three LM561C variants deliver identical flux (34 lm), test current (65mA), maximum current (180mA), viewing angle (120°), and thermal resistance (12°C/W). Forward voltage differences (2.75V for XAT0S0 and XATKS0 versus 2.8V for XATMS0) are within acceptable tolerance for neutral white LED applications. Selection is based on procurement availability and lead time requirements.

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