SPMWH3228FD5WAQMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAQMS3 is a Samsung Semiconductor LM281BZ cool white LED in 2835 metric package (1113 case code) designed for surface mount lighting applications. This component operates at 5700K color temperature with 64 lumens at 25°C test conditions and delivers 138 lumens per watt efficiency. The part is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this LED specification remains functionally required.

Key Parameters

Parameter	Value	Unit
Series	LM281BZ	-
Color	White, Cool	-
CCT (Correlated Color Temperature)	5700K	K
Flux @ 25°C, 150mA Test Current	64 lm (62–66 lm range)	lm
Forward Voltage (Vf) Typical	3.1V	V
Test Current	150mA	mA
Maximum Current	160mA	mA
Lumens per Watt @ Test Current	138 lm/W	lm/W
CRI (Color Rendering Index)	80	-
Viewing Angle	120°	degrees
Package / Case	1113 (2835 Metric)	-
Size / Dimension	3.50mm L × 2.80mm W	mm
Height - Seated (Max)	0.75mm	mm
Thermal Resistance	25°C/W	°C/W
RoHS Status	RoHS Compliant	-
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	-

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH3228FD5WAQMS3 is determined by strict parametric matching across the following critical criteria:

Color and CCT Match: All substitute parts must maintain White, Cool 5700K specification to ensure identical chromaticity and color rendering in end-use applications.

Optical Performance: Luminous flux at 25°C test conditions must fall within the specified range (62–66 lm). All identified substitutes deliver 64 lm, meeting this requirement.

Electrical Compatibility: Test current of 150mA and maximum current rating of 160mA must be identical. Forward voltage tolerance is acceptable within the range provided by each part's specification.

Mechanical Compatibility: Package type 1113 (2835 Metric), physical dimensions (3.50mm × 2.80mm), and maximum seated height (0.75mm) must match exactly to ensure PCB footprint and assembly compatibility.

Thermal and Compliance Requirements: Thermal resistance of 25°C/W, RoHS compliance, and MSL 2A (4 Weeks) must be maintained across all substitutes.

The three identified substitute parts (SPMWH3228FD5WAQ0SE, SPMWH3228FD5WAQKSE, SPMWH3228FD5WAQMSE) are all LM281BZ+ series variants manufactured by Samsung Semiconductor. These parts share the same base product number (SPMWH3228) and differ only in packaging designation suffixes, indicating they are parametric equivalents with active product status.

Parameter Comparison

Parameter	SPMWH3228FD5WAQMS3 (Main)	SPMWH3228FD5WAQ0SE	SPMWH3228FD5WAQKSE	SPMWH3228FD5WAQMSE
Series	LM281BZ	LM281BZ+	LM281BZ+	LM281BZ+
Product Status	Not For New Designs	Active	Active	Active
Color	White, Cool	White, Cool	White, Cool	White, Cool
CCT (K)	5700K	5700K	5700K	5700K
Flux @ 25°C, 150mA (lm)	64 (62–66)	64 (62–66)	64 (62–66)	64 (62–66)
Forward Voltage Vf (V)	3.1V	3.0V	3.0V	3.0V
Test Current (mA)	150mA	150mA	150mA	150mA
Maximum Current (mA)	160mA	160mA	160mA	160mA
Lumens/Watt @ Test Current	138 lm/W	142 lm/W	142 lm/W	142 lm/W
CRI	80	80	80	80
Viewing Angle	120°	120°	120°	120°
Package / Case	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)
Size / Dimension (mm)	3.50 × 2.80	3.50 × 2.80	3.50 × 2.80	3.50 × 2.80
Height - Seated Max (mm)	0.75	0.75	0.75	0.75
Thermal Resistance (°C/W)	25	25	25	25
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
MSL	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)
Inventory Status	820 Pcs New Original	883 Pcs New Original	985 Pcs New Original	971 Pcs New Original

Engineering Selection Recommendations

Primary Substitution Path: The three identified LM281BZ+ variants (SPMWH3228FD5WAQ0SE, SPMWH3228FD5WAQKSE, SPMWH3228FD5WAQMSE) are direct parametric equivalents to the SPMWH3228FD5WAQMS3. All three parts carry Active product status, ensuring long-term availability and supply chain continuity compared to the end-of-life main part.

Forward Voltage Consideration: The substitute parts operate at 3.0V typical forward voltage compared to 3.1V for the main part. This 0.1V reduction is within normal LED manufacturing tolerance and does not require circuit redesign. Driver circuits designed for the original 3.1V specification will operate the substitutes within acceptable parameters.

Efficiency Improvement: The LM281BZ+ substitutes deliver 142 lm/W compared to 138 lm/W for the original part, representing a 2.9% efficiency gain. This improvement is a direct result of the series evolution and does not introduce compatibility issues.

Compliance and Certification: All substitute parts maintain RoHS compliance and identical MSL 2A (4 Weeks) moisture sensitivity rating, ensuring compatibility with existing assembly and storage protocols.

Inventory Availability: All three substitute parts are available in higher quantities (883–985 pieces) compared to the main part (820 pieces), supporting production continuity and reducing supply risk.

Frequently Asked Questions (FAQ)

Q: Can SPMWH3228FD5WAQ0SE, SPMWH3228FD5WAQKSE, or SPMWH3228FD5WAQMSE be used as direct replacements for SPMWH3228FD5WAQMS3?

A: Yes. All three parts are parametric equivalents with identical color temperature (5700K), luminous flux (64 lm at 25°C), test current (150mA), maximum current (160mA), CRI (80), viewing angle (120°), package type (1113/2835 Metric), physical dimensions, thermal resistance, and compliance ratings. The 0.1V forward voltage difference (3.0V vs. 3.1V) is within normal LED tolerance and does not require circuit modification.

Q: What is the difference between the three substitute part numbers?

A: SPMWH3228FD5WAQ0SE, SPMWH3228FD5WAQKSE, and SPMWH3228FD5WAQMSE are all LM281BZ+ series parts from Samsung Semiconductor with identical electrical and optical specifications. The suffix variations (0SE, KSE, MSE) indicate different packaging designations or distribution channels but do not affect functional performance or compatibility.

Q: Why does the main part have "Not For New Designs" status while the substitutes are "Active"?

A: The SPMWH3228FD5WAQMS3 has reached end-of-life in Samsung's product roadmap. The LM281BZ+ variants represent the current generation of this LED family and are actively manufactured and supported. Substituting to an Active part ensures continued availability and manufacturing support.

Q: Are there any circuit design changes required when switching from SPMWH3228FD5WAQMS3 to the substitute parts?

A: No circuit redesign is required. The forward voltage difference of 0.1V (3.1V to 3.0V) is within standard LED operating tolerance. Existing driver circuits and current-limiting resistor values will function correctly with the substitute parts. The improved efficiency (142 vs. 138 lm/W) may result in slightly lower power consumption but does not necessitate design changes.

Q: Do the substitute parts have the same package footprint and assembly compatibility?

A: Yes. All substitute parts use the identical 1113 (2835 Metric) package with dimensions of 3.50mm length × 2.80mm width and maximum seated height of 0.75mm. PCB footprints, pick-and-place programming, and reflow profiles remain unchanged.

Q: What is the moisture sensitivity level, and does it affect storage or handling?

A: All parts, including the main part and substitutes, carry MSL 2A (4 Weeks) rating. This means the components must be stored in a dry environment and used within 4 weeks of opening the moisture barrier bag. Standard ESD and moisture control procedures used for surface mount LEDs apply.

Q: Are all substitute parts RoHS compliant?

A: Yes. SPMWH3228FD5WAQ0SE, SPMWH3228FD5WAQKSE, and SPMWH3228FD5WAQMSE are all RoHS compliant, matching the compliance status of the original SPMWH3228FD5WAQMS3.

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