Equivalent & Substitute Parts for SPMWHT541MP7WAUUS0

Part Overview

The SPMWHT541MP7WAUUS0 is a Samsung Semiconductor LED lighting component from the LM561B Plus series, featuring warm white 3500K color temperature in a 5630 surface mount package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. The availability of equivalent and substitute components from the active LM281B+ series provides viable alternatives for ongoing production requirements and design updates.

Key Parameters

Parameter	Value
Manufacturer Part Number	SPMWHT541MP7WAUUS0
Manufacturer	Samsung Semiconductor, Inc.
Series	LM561B Plus
Color	White, Warm
CCT (K)	3500K
Current - Test	65mA
Voltage - Forward (Vf) (Typ)	2.95V
CRI (Color Rendering Index)	90
Current - Max	180mA
Viewing Angle	120°
Mounting Type	Surface Mount
Package / Case	4-SMD, Flat Leads
Supplier Device Package	5630
Size / Dimension	0.197" L x 0.118" W (5.00mm x 3.00mm)
Height - Seated (Max)	0.031" (0.80mm)
Thermal Resistance of Package	20°C/W
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	2A (4 Weeks)
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution of the SPMWHT541MP7WAUUS0 is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 4-SMD, Flat Leads (5630 form factor)
Physical dimensions: 5.00mm x 3.00mm
Height: 0.80mm maximum
Mounting type: Surface Mount

Optical Specifications:

Color: White, Warm
CCT: 3500K
CRI: 90
Viewing angle: 120°

Electrical Specifications:

Forward voltage range: 2.9V to 3.0V
Test current: 65mA to 150mA
Maximum current: 180mA to 200mA

Compliance & Environmental:

RoHS compliance (RoHS3 preferred for active parts)
MSL rating: 2A (4 Weeks)

The substitute parts are grouped into two categories: a direct series equivalent (SPMWHT541MP7WAUMS0) and parametric equivalents from the LM281B+ series. All substitutes maintain identical mechanical form factor, optical characteristics, and environmental compliance ratings.

Parameter Comparison

Parameter	SPMWHT541MP7WAUUS0 (Main)	SPMWHT541MP7WAUMS0	SPMWH1228FD7W2U0SJ	SPMWH1228FD7W2UKSJ	SPMWH1228FD7W2UMSJ	SPMWH1228FD7WAU0SJ	SPMWH1228FD7WAUKSJ	SPMWH1228FD7WAUMSJ
Series	LM561B Plus	LM561B Plus	LM281B+	LM281B+	LM281B+	LM281B+	LM281B+	LM281B+
Color	White, Warm	White, Warm	White, Warm	White, Warm	White, Warm	White, Warm	White, Warm	White, Warm
CCT (K)	3500K	3500K	3500K	3500K	3500K	3500K	3500K	3500K
Current - Test	65mA	65mA	150mA	150mA	150mA	150mA	150mA	150mA
Voltage - Forward (Vf) (Typ)	2.95V	2.95V	2.9V	2.9V	2.9V	3V	3V	3V
CRI	90	90	90	90	90	90	90	90
Current - Max	180mA	180mA	200mA	200mA	200mA	200mA	200mA	200mA
Viewing Angle	120°	120°	120°	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	4-SMD, Flat Leads	4-SMD, Flat Leads	4-SMD, Flat Leads
Supplier Device Package	5630	5630	5630	5630	5630	5630	5630	5630
Size / Dimension	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm	5.00mm x 3.00mm
Height - Seated (Max)	0.80mm	0.80mm	0.80mm	0.80mm	0.80mm	0.80mm	0.80mm	0.80mm
Thermal Resistance	20°C/W	15°C/W	25°C/W	25°C/W	25°C/W	25°C/W	25°C/W	25°C/W
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Active
Inventory Status	1056 Pcs	52082 Pcs	1018 Pcs	803 Pcs	975 Pcs	1035 Pcs	785 Pcs	963 Pcs

Engineering Selection Recommendations

Primary Substitute: SPMWHT541MP7WAUMS0

The SPMWHT541MP7WAUMS0 is the direct equivalent within the LM561B Plus series. This part maintains identical electrical and mechanical specifications while offering improved thermal performance (15°C/W versus 20°C/W) and active product status. The significantly higher inventory level (52,082 units) ensures supply continuity. This part is recommended for direct replacement in existing designs without circuit modification.

Secondary Substitutes: LM281B+ Series (SPMWH1228FD7 variants)

The LM281B+ series parts provide parametric equivalence with the following considerations:

All LM281B+ variants maintain identical mechanical form factor and optical specifications
Forward voltage ranges from 2.9V to 3.0V, compared to 2.95V in the main part
Test current is 150mA versus 65mA in the main part
Maximum current rating increases to 200mA versus 180mA
Thermal resistance increases to 25°C/W versus 20°C/W in the main part
All variants carry ROHS3 compliance and active product status

The LM281B+ series is suitable for new designs and applications where the higher test current and maximum current ratings are compatible with circuit design parameters.

Compliance Status:

All substitute parts maintain RoHS compliance. The SPMWHT541MP7WAUMS0 and all LM281B+ variants carry ROHS3 certification, which supersedes the RoHS Compliant designation of the main part. All parts maintain MSL 2A (4 Weeks) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can SPMWHT541MP7WAUMS0 be used as a direct replacement for SPMWHT541MP7WAUUS0?

A: Yes. Both parts are from the LM561B Plus series with identical electrical specifications (2.95V, 65mA test current), optical characteristics (3500K, 90 CRI, 120° viewing angle), and mechanical form factor (5630, 5.00mm x 3.00mm). The primary difference is improved thermal resistance (15°C/W versus 20°C/W) and active product status. No circuit modification is required.

Q: What are the key differences between LM561B Plus and LM281B+ series?

A: The LM281B+ series operates at higher test current (150mA versus 65mA) and maximum current (200mA versus 180mA). Forward voltage is slightly lower (2.9V to 3.0V versus 2.95V). Thermal resistance is higher (25°C/W versus 20°C/W). Both series maintain identical color temperature (3500K), CRI (90), viewing angle (120°), and mechanical package (5630). The LM281B+ series is active, while LM561B Plus is not recommended for new designs.

Q: Are all substitute parts mechanically compatible with existing PCB layouts?

A: Yes. All substitute parts use the identical 5630 package with 4-SMD flat leads, 5.00mm x 3.00mm dimensions, and 0.80mm maximum seated height. No PCB redesign or footprint modification is necessary.

Q: What is the difference between the LM281B+ variants (W2U0SJ, W2UKSJ, W2UMSJ, WAU0SJ, WAUKSJ, WAUMSJ)?

A: The variants differ in forward voltage specification. Parts designated "W2U" have 2.9V typical forward voltage, while "WAU" variants have 3.0V typical forward voltage. All other electrical and mechanical specifications remain identical. Selection depends on circuit design requirements for forward voltage tolerance.

Q: Is thermal management affected when substituting to LM281B+ series?

A: Yes. The LM281B+ series has higher thermal resistance (25°C/W) compared to the main part (20°C/W) and SPMWHT541MP7WAUMS0 (15°C/W). In thermally constrained applications, thermal performance may be degraded. Circuit design must account for this parameter difference.

Q: What is the inventory status for each substitute part?

A: SPMWHT541MP7WAUMS0 has the highest availability at 52,082 units. LM281B+ variants range from 785 to 1,035 units. The main part SPMWHT541MP7WAUUS0 has 1,056 units available but is not recommended for new designs.

Q: Are all substitute parts RoHS compliant?

A: Yes. The main part carries RoHS Compliant certification. SPMWHT541MP7WAUMS0 and all LM281B+ variants carry ROHS3 Compliant certification, which represents the current RoHS standard. All parts are REACH Unaffected or REACH Compliant.

Q: Can LM281B+ parts be used in applications designed for LM561B Plus?

A: Mechanical and optical compatibility is confirmed. Electrical compatibility requires circuit analysis. The higher test current (150mA versus 65mA) and maximum current (200mA versus 180mA) must be evaluated against circuit design parameters. Forward voltage differences (2.9V to 3.0V versus 2.95V) may require current-limiting resistor adjustment.

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