SPMWH1228FD5WAVMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAVMS3 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case). This surface mount LED operates at 3000K color temperature with 60 lm nominal flux at 25°C and 150 mA test current. The part is marked as "Not For New Designs," indicating end-of-life status. Equivalent and substitute parts are necessary for design continuity, inventory management, and sourcing flexibility when the primary part becomes unavailable.

Key Parameters

Parameter	Value	Unit
Series	LM281B	—
Color	White, Warm	—
CCT (Correlated Color Temperature)	3000K	K
Flux @ 25°C, 150 mA	60 lm (58–62 lm range)	lm
Forward Voltage (Vf) Typical	3.1V	V
Test Current	150 mA	mA
Maximum Current	160 mA	mA
Lumens/Watt @ 150 mA	129 lm/W	lm/W
CRI (Color Rendering Index)	80	—
Viewing Angle	120°	°
Package / Case	1113 (2835 Metric)	—
Mounting Type	Surface Mount	—
Size / Dimension	3.50 mm × 2.80 mm	mm
Height - Seated (Max)	0.75 mm	mm
Thermal Resistance	25°C/W	°C/W
RoHS Status	RoHS Compliant	—
MSL (Moisture Sensitivity Level)	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAVMS3 is determined by the following critical parameters:

Primary Substitution Criteria:

Color: White, Warm (3000K CCT)
Package / Case: 1113 (2835 Metric)
Mounting Type: Surface Mount
Flux @ 25°C, 150 mA: 60 lm nominal (58–62 lm acceptable range)
Forward Voltage (Vf) Typical: 3.1V
Test Current: 150 mA
Maximum Current: 160 mA
Viewing Angle: 120°
CRI: 80
Thermal Resistance: 25°C/W
RoHS Compliance: Required
MSL: 2A (4 Weeks)

Substitute Categories:

Direct Manufacturer Substitutes (Same Base Product, Different Packaging Variant):

SPMWH1228FD5WAVMSC: LM281B+ series, Active status, identical electrical and mechanical parameters except flux 61 lm (59–63 lm) and efficiency 131 lm/W

Parametric Equivalents (Identical Electrical Performance, Same Series):

SPMWH1228FD5WAV0S3: LM281B series, Not For New Designs status, identical parameters to main part
SPMWH1228FD5WAVUS3: LM281B series, Not For New Designs status, identical parameters to main part

Parametric Equivalents (Enhanced Series, Lower Forward Voltage):

SPMWH3228FD5WAV0SE: LM281BZ+ series, Active status, Vf 3.0V (0.1V lower), flux 60 lm, efficiency 133 lm/W
SPMWH3228FD5WAVKSE: LM281BZ+ series, Active status, Vf 3.0V (0.1V lower), flux 60 lm, efficiency 133 lm/W
SPMWH3228FD5WAVMSE: LM281BZ+ series, Active status, Vf 3.0V (0.1V lower), flux 60 lm, efficiency 133 lm/W

Parameter Comparison

Part Number	Series	Status	Vf (V)	Flux @ 25°C (lm)	lm/W	Inventory (Pcs)	Packaging
SPMWH1228FD5WAVMS3	LM281B	Not For New Designs	3.1	60 (58–62)	129	3758	Tape & Reel
SPMWH1228FD5WAVMSC	LM281B+	Active	3.1	61 (59–63)	131	902	Tape & Reel
SPMWH1228FD5WAV0S3	LM281B	Not For New Designs	3.1	60 (58–62)	129	2401	Tape & Reel
SPMWH1228FD5WAVUS3	LM281B	Not For New Designs	3.1	60 (58–62)	129	32929	Tape & Reel
SPMWH3228FD5WAV0SE	LM281BZ+	Active	3.0	60 (58–62)	133	932	—
SPMWH3228FD5WAVKSE	LM281BZ+	Active	3.0	60 (58–62)	133	940	—
SPMWH3228FD5WAVMSE	LM281BZ+	Active	3.0	60 (58–62)	133	728	Tape & Reel

Engineering Selection Recommendations

For Existing Designs (Maintenance & Repair): SPMWH1228FD5WAVUS3 is the primary equivalent. It maintains identical electrical specifications (Vf 3.1V, 60 lm flux, 129 lm/W) and mechanical compatibility with the main part SPMWH1228FD5WAVMS3. Both are LM281B series with "Not For New Designs" status. Inventory availability is highest at 32,929 pcs. Tape & Reel packaging is standard.

For Active Production (New Designs): SPMWH1228FD5WAVMSC (LM281B+ series, Active status) is the recommended upgrade path. It provides improved efficiency (131 lm/W vs. 129 lm/W) and higher flux output (61 lm vs. 60 lm nominal) while maintaining identical forward voltage (3.1V) and all mechanical parameters. Active product status ensures long-term availability.

For Power-Optimized Applications: SPMWH3228FD5WAVMSE (LM281BZ+ series, Active status) offers 0.1V lower forward voltage (3.0V vs. 3.1V) and superior efficiency (133 lm/W vs. 129 lm/W) with identical flux output (60 lm). This reduces power dissipation in current-limited designs. Active status supports long-term supply continuity.

Compliance & Certification: All listed parts are RoHS Compliant and carry MSL 2A (4 Weeks) rating. All maintain 25°C/W thermal resistance, 120° viewing angle, and 1113 (2835 Metric) package compatibility. ECCN EAR99 and HTSUS 8541.41.0000 classifications are consistent across all variants.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAVUS3 directly replace SPMWH1228FD5WAVMS3 in existing PCB designs?

A: Yes. Both parts are LM281B series with identical electrical parameters (3.1V Vf, 60 lm flux, 129 lm/W), identical mechanical dimensions (3.50 mm × 2.80 mm, 0.75 mm height), and identical package type (1113 / 2835 Metric). Surface mount orientation and thermal characteristics are identical. No PCB redesign is required.

Q: What is the difference between LM281B and LM281B+ series?

A: LM281B+ is an enhanced variant with improved luminous efficiency (131 lm/W vs. 129 lm/W) and slightly higher flux output (61 lm vs. 60 lm nominal). Forward voltage remains 3.1V. All mechanical and thermal parameters are identical. LM281B+ carries Active product status, ensuring continued availability.

Q: Why are SPMWH3228 parts listed as substitutes if they have different forward voltage?

A: SPMWH3228FD5WAV0SE, SPMWH3228FD5WAVKSE, and SPMWH3228FD5WAVMSE (LM281BZ+ series) are parametric equivalents with 0.1V lower forward voltage (3.0V vs. 3.1V). They maintain identical flux output (60 lm), viewing angle (120°), package (1113 / 2835 Metric), and thermal resistance (25°C/W). The lower Vf reduces power consumption in constant-current driver circuits. These parts are suitable for designs where forward voltage tolerance permits 3.0V operation.

Q: What is the significance of "Not For New Designs" status?

A: "Not For New Designs" indicates the part is in end-of-life phase. Existing inventory remains available, but manufacturer support and long-term supply are not guaranteed. For new product development, Active status parts (LM281B+ or LM281BZ+ series) are recommended to ensure supply continuity beyond the current product lifecycle.

Q: Are all substitute parts available in Tape & Reel packaging?

A: SPMWH1228FD5WAVMS3, SPMWH1228FD5WAVMSC, SPMWH1228FD5WAV0S3, and SPMWH1228FD5WAVUS3 are specified as Tape & Reel (TR). SPMWH3228FD5WAV0SE and SPMWH3228FD5WAVKSE do not specify packaging in the provided data. SPMWH3228FD5WAVMSE is Tape & Reel. Confirm packaging specification with supplier before procurement.

Q: What is the CRI value for all listed parts?

A: All parts maintain CRI (Color Rendering Index) of 80, consistent with warm white 3000K LED specifications. This ensures color rendering consistency across all substitutes.

Q: Are moisture sensitivity levels identical across all parts?

A: Yes. All parts carry MSL 2A (4 Weeks) rating, indicating identical moisture sensitivity and storage requirements. Standard dry-pack storage and handling procedures apply uniformly.

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