SPMWH3228FD5WAUMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAUMS2 is a Samsung Semiconductor warm white surface mount LED in the 2835 metric package (1113 case). This component operates at 3500K color temperature with a forward voltage of 3.1V and test current of 150mA, delivering 57 lumens at 25°C with a 120° viewing angle. The part is classified as Not For New Designs, indicating it has been superseded in Samsung's product portfolio. Equivalent substitute parts are available with improved specifications or active product status to support ongoing production requirements.

Key Parameters

Parameter	Value	Unit
Manufacturer	Samsung Semiconductor, Inc.
Series	LM281BZ
Color	White, Warm
CCT (Correlated Color Temperature)	3500K	K
Flux @ 25°C, 150mA	57	lm
Flux Range	55–59	lm
Forward Voltage (Vf) Typical	3.1	V
Test Current	150	mA
Maximum Current	160	mA
Lumens/Watt @ 150mA	123	lm/W
CRI (Color Rendering Index)	80
Viewing Angle	120	°
Package / Case	1113 (2835 Metric)
Size / Dimension	3.50 × 2.80	mm
Height – Seated (Max)	0.75	mm
Thermal Resistance	25	°C/W
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
MSL (Moisture Sensitivity Level)	2A (4 Weeks)

Substitute Part Grouping Explanation

Substitute parts for SPMWH3228FD5WAUMS2 are classified into two functional groups based on electrical and mechanical compatibility:

Group 1: CCT 3000K Substitutes (LM281B+ Series)

SPMWH1228FD5WAV0SA
SPMWH1228FD5WAVKSA
SPMWH1228FD5WAVMSA

These parts maintain identical electrical characteristics (3.1V forward voltage, 150mA test current, 57 lm flux, 120° viewing angle, 80 CRI) and mechanical form factor (2835 package, 3.50 × 2.80 mm, 0.75 mm height). The primary difference is color temperature: 3000K versus the main part's 3500K. All three variants are Active product status. Substitution is valid where warm white lighting at 3000K is acceptable within application tolerance.

Group 2: CCT 3500K Substitutes (LM281BZ+ Series)

SPMWH3228FD5WAU0SC
SPMWH3228FD5WAUKSC
SPMWH3228FD5WAUMSC

These parts match the main part's 3500K color temperature and maintain identical mechanical specifications (2835 package, 3.50 × 2.80 mm, 0.75 mm height, 120° viewing angle, 80 CRI). Electrical parameters are equivalent with minor forward voltage reduction (3.0V typical versus 3.1V) and improved efficiency (127 lm/W versus 123 lm/W). All three variants are Active product status, representing direct functional upgrades from the Not For New Designs main part.

Substitution logic is based on:

Identical package and mechanical form factor (2835 metric)
Matching or compatible electrical operating parameters (voltage, current, flux)
Identical viewing angle and CRI
Identical thermal resistance and MSL rating
RoHS compliance maintained across all variants

Parameter Comparison

Parameter	SPMWH3228FD5WAUMS2 (Main)	SPMWH1228FD5WAV0SA	SPMWH1228FD5WAVKSA	SPMWH1228FD5WAVMSA	SPMWH3228FD5WAU0SC	SPMWH3228FD5WAUKSC	SPMWH3228FD5WAUMSC
Series	LM281BZ	LM281B+	LM281B+	LM281B+	LM281BZ+	LM281BZ+	LM281BZ+
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active
CCT (K)	3500	3000	3000	3000	3500	3500	3500
Flux @ 25°C (lm)	57	57	57	57	57	57	57
Flux Range (lm)	55–59	55–59	55–59	55–59	55–59	55–59	55–59
Forward Voltage Vf (V)	3.1	3.1	3.1	3.1	3.0	3.0	3.0
Test Current (mA)	150	150	150	150	150	150	150
Maximum Current (mA)	160	160	160	160	160	160	160
Lumens/Watt @ 150mA	123	123	123	123	127	127	127
CRI	80	80	80	80	80	80	80
Viewing Angle (°)	120	120	120	120	120	120	120
Package / Case	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)
Size (mm)	3.50 × 2.80	3.50 × 2.80	3.50 × 2.80	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	0.75	0.75	0.75
Thermal Resistance (°C/W)	25	25	25	25	25	25	25
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	RoHS Compliant	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)	2A (4 Weeks)	2A (4 Weeks)

Engineering Selection Recommendations

For Direct Replacement (Same CCT 3500K):

Select from Group 2 substitutes (SPMWH3228FD5WAU0SC, SPMWH3228FD5WAUKSC, or SPMWH3228FD5WAUMSC) when color temperature matching is required. These LM281BZ+ variants are Active product status and provide improved efficiency (127 lm/W versus 123 lm/W) with reduced forward voltage (3.0V versus 3.1V). All three variants are electrically and mechanically interchangeable with the main part. Selection among the three variants may be based on inventory availability or packaging requirements.

For Color Temperature Flexibility (3000K Alternative):

Select from Group 1 substitutes (SPMWH1228FD5WAV0SA, SPMWH1228FD5WAVKSA, or SPMWH1228FD5WAVMSA) when application tolerance permits 3000K warm white operation. These LM281B+ variants maintain identical electrical performance (3.1V, 150mA, 57 lm, 123 lm/W) and mechanical form factor. All three are Active product status. Selection among variants may be based on inventory availability.

Compliance Considerations:

All substitute parts maintain RoHS compliance and identical MSL rating (2A, 4 Weeks). Thermal management characteristics are unchanged (25°C/W). No additional design modifications are required for thermal or environmental handling.

Inventory Availability:

Current stock levels: SPMWH3228FD5WAUMSC (1092 pcs), SPMWH3228FD5WAU0SC (1050 pcs), SPMWH1228FD5WAVMSA (934 pcs), SPMWH1228FD5WAVKSA (979 pcs), SPMWH1228FD5WAV0SA (726 pcs).

Frequently Asked Questions (FAQ)

Q: Can SPMWH3228FD5WAUMS2 be replaced with a 3000K variant?

A: Yes, if application requirements permit. Group 1 substitutes (SPMWH1228FD5WAV0SA, SPMWH1228FD5WAVKSA, SPMWH1228FD5WAVMSA) provide identical electrical and mechanical performance at 3000K color temperature. Verify that the warmer 3000K tone is acceptable for the intended lighting application.

Q: What is the difference between Group 1 and Group 2 substitutes?

A: Group 1 (LM281B+ series) operates at 3000K color temperature with 3.1V forward voltage and 123 lm/W efficiency. Group 2 (LM281BZ+ series) operates at 3500K color temperature with 3.0V forward voltage and 127 lm/W efficiency. Both groups are mechanically identical and fully compatible with the main part's 2835 package.

Q: Are all substitute parts in Active product status?

A: Yes. All seven substitute parts are classified as Active. The main part SPMWH3228FD5WAUMS2 is Not For New Designs, making substitution necessary for new production designs.

Q: Do substitute parts require PCB layout modifications?

A: No. All substitute parts use the identical 2835 metric package (1113 case) with matching dimensions (3.50 × 2.80 mm) and height (0.75 mm maximum). No PCB layout changes are required.

Q: What is the thermal performance difference?

A: Thermal resistance is identical across all parts at 25°C/W. No thermal design modifications are necessary when substituting.

Q: Are there packaging differences among Group 2 variants?

A: The main part SPMWH3228FD5WAUMS2 specifies Tape & Reel (TR) packaging. Group 2 variants (SPMWH3228FD5WAU0SC, SPMWH3228FD5WAUKSC, SPMWH3228FD5WAUMSC) do not specify packaging in the provided data. Confirm packaging requirements with the supplier before procurement.

Q: Can forward voltage reduction (3.1V to 3.0V) affect circuit design?

A: The 0.1V reduction in Group 2 variants may reduce power consumption by approximately 3% at constant current operation. Verify that existing current-limiting circuits accommodate this voltage change. Most LED driver circuits with current regulation will operate without modification.

Q: What is the efficiency improvement in Group 2 variants?

A: Group 2 variants deliver 127 lm/W versus 123 lm/W in the main part and Group 1 variants, representing approximately 3.3% improved efficiency at identical 150mA test current.

Q: Are all parts RoHS compliant?

A: Yes. All parts including the main component and all seven substitutes are RoHS Compliant.

Q: What is the moisture sensitivity requirement?

A: All parts carry MSL rating 2A (4 Weeks), indicating they must be stored in controlled humidity and used within 4 weeks of package opening under standard conditions.

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