SPMWH1228FD7WAV0S3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAV0S3 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case) designed for surface mount applications. This component operates at 3000K color temperature with 3.1V forward voltage and 150mA test current, delivering 55 lumens at 25°C with a Color Rendering Index of 90.

The SPMWH1228FD7WAV0S3 carries a product status of "Not For New Designs," indicating Samsung has transitioned this series to newer alternatives. Identifying equivalent and substitute parts is necessary for design continuity, inventory management, and access to active product lines with extended availability and support.

Key Parameters

Parameter	Value	Unit
Series	LM281B	—
Color	White, Warm	—
CCT (Correlated Color Temperature)	3000K	K
Flux @ 25°C, 150mA	55	lm
Forward Voltage (Vf) Typical	3.1	V
Test Current	150	mA
Maximum Current	160	mA
Lumens per Watt @ 150mA	118	lm/W
Color Rendering Index (CRI)	90	—
Viewing Angle	120	°
Package / Case	1113 (2835 Metric)	—
Size / Dimension	3.50 × 2.80	mm
Height - Seated (Max)	0.75	mm
Thermal Resistance of Package	17	°C/W
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitute parts for the SPMWH1228FD7WAV0S3 are classified based on the following substitution criteria:

Direct Substitutes (Same Series, Same CCT): Parts maintaining identical electrical and optical characteristics within the LM281B series at 3000K. These include SPMWH1228FD7WAV0SC and SPMWH1228FD7WAVMS3. Both share the same package, forward voltage, test current, viewing angle, and thermal characteristics. The primary difference is product status: SPMWH1228FD7WAV0SC operates under the LM281B+ series designation (Active status) while SPMWH1228FD7WAVMS3 remains in the LM281B series (Not For New Designs).

Parametric Equivalents (Same Series, Different CCT): Parts SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, and SPMWH1228FD5WAWMSA operate at 2700K color temperature instead of 3000K. These components maintain identical forward voltage (3.1V), test current (150mA), flux output (55 lumens), lumens per watt (118 lm/W), and package dimensions. The CRI differs at 80 versus 90. These parts are classified as LM281B+ series with Active product status.

Cross-Series Parametric Equivalents (Different Series, Different Forward Voltage): Parts SPMWH3228FD5WAW0SC, SPMWH3228FD5WAWKSC, and SPMWH3228FD5WAWMSC belong to the LM281BZ+ series with 2700K color temperature. These components operate at 3V forward voltage (versus 3.1V) and deliver higher efficiency at 122 lm/W. All maintain 150mA test current, 55 lumens output, 120° viewing angle, and identical package dimensions. Thermal resistance is 25°C/W versus 17°C/W in the main part.

Key Parameters Determining Substitution:

Package / Case: 1113 (2835 Metric)
Mounting Type: Surface Mount
Size / Dimension: 3.50 × 2.80 mm
Height - Seated (Max): 0.75 mm
Test Current: 150 mA
Maximum Current: 160 mA
Viewing Angle: 120°
Color: White, Warm
Flux @ 25°C: 55 lm (acceptable range 53–57 lm)

Parameter Comparison

Part Number	Series	Product Status	CCT (K)	Vf (V)	Flux @ 25°C (lm)	lm/W	CRI	Thermal Resistance (°C/W)	Inventory (Pcs)
SPMWH1228FD7WAV0S3	LM281B	Not For New Designs	3000	3.1	55	118	90	17	54987
SPMWH1228FD7WAV0SC	LM281B+	Active	3000	3.1	54	116	90	25	682
SPMWH1228FD7WAVMS3	LM281B	Not For New Designs	3000	3.1	55	118	90	17	1295
SPMWH1228FD5WAW0SA	LM281B+	Active	2700	3.1	55	118	80	25	985
SPMWH1228FD5WAWKSA	LM281B+	Active	2700	3.1	55	118	80	25	1053
SPMWH1228FD5WAWMSA	LM281B+	Active	2700	3.1	55	118	80	25	774
SPMWH3228FD5WAW0SC	LM281BZ+	Active	2700	3.0	55	122	80	25	770
SPMWH3228FD5WAWKSC	LM281BZ+	Active	2700	3.0	55	122	80	25	866
SPMWH3228FD5WAWMSC	LM281BZ+	Active	2700	3.0	55	122	80	25	732

Engineering Selection Recommendations

For Direct Replacement (3000K, 3.1V): SPMWH1228FD7WAV0SC is the primary direct substitute. It maintains identical color temperature (3000K), forward voltage (3.1V), flux output (54–55 lm), viewing angle (120°), and package dimensions. The part operates under Active product status with LM281B+ series designation, ensuring continued availability and manufacturing support. Thermal resistance increases from 17°C/W to 25°C/W; thermal design review is required for applications with stringent thermal constraints.

SPMWH1228FD7WAVMS3 provides an alternative direct substitute within the same LM281B series, maintaining identical thermal resistance (17°C/W) and optical characteristics. However, this part retains "Not For New Designs" status, limiting its suitability for long-term production programs.

For Active Product Line Migration (2700K, 3.1V): SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, and SPMWH1228FD5WAWMSA are parametric equivalents operating at 2700K with identical electrical characteristics (3.1V, 150mA, 55 lm). All three carry Active product status within the LM281B+ series. CRI decreases from 90 to 80; applications requiring high color rendering must evaluate this change. Thermal resistance increases to 25°C/W.

For Enhanced Efficiency (2700K, 3.0V): SPMWH3228FD5WAW0SC, SPMWH3228FD5WAWKSC, and SPMWH3228FD5WAWMSC represent the LM281BZ+ series with reduced forward voltage (3.0V) and improved efficiency (122 lm/W versus 118 lm/W). These parts are suitable for applications where lower operating voltage and higher luminous efficacy provide system-level benefits. All three carry Active product status. Forward voltage reduction of 0.1V requires circuit verification to confirm compatibility with existing current-limiting designs.

Compliance and Certification: All substitute parts maintain RoHS Compliance and MSL 2A (4 Weeks) moisture sensitivity rating, matching the original part's environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAV0SC replace SPMWH1228FD7WAV0S3 in existing designs?

A: Yes. SPMWH1228FD7WAV0SC is a direct substitute with identical color temperature (3000K), forward voltage (3.1V), flux output (54–55 lm), and package dimensions. The primary difference is increased thermal resistance (25°C/W versus 17°C/W). Thermal analysis is required for applications operating at elevated ambient temperatures or with high current density.

Q: What is the difference between the 3000K and 2700K substitute options?

A: The 3000K option (SPMWH1228FD7WAV0SC, SPMWH1228FD7WAVMS3) maintains the original color temperature for applications requiring consistent warm white output. The 2700K options (SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, SPMWH1228FD5WAWMSA) provide a warmer appearance with reduced CRI (80 versus 90). Selection depends on application color temperature requirements and color rendering specifications.

Q: Are the LM281BZ+ series parts (SPMWH3228 base number) compatible with existing circuit designs?

A: The LM281BZ+ series operates at 3.0V forward voltage versus 3.1V in the original part. This 0.1V reduction affects current-limiting resistor calculations and LED string configurations. Circuit verification is required to confirm compatibility. The reduced forward voltage provides lower power dissipation and improved efficiency (122 lm/W versus 118 lm/W).

Q: Why do some substitute parts show lower thermal resistance (25°C/W versus 17°C/W)?

A: Thermal resistance is a package-level characteristic determined by die attachment, substrate material, and thermal interface design. The LM281B series (original part, SPMWH1228FD7WAVMS3) exhibits 17°C/W thermal resistance. The LM281B+ and LM281BZ+ series show 25°C/W thermal resistance due to different package construction. Applications with thermal constraints must account for this difference in junction temperature calculations.

Q: Can I use SPMWH1228FD5WAW0SA (2700K, CRI 80) in place of SPMWH1228FD7WAV0S3 (3000K, CRI 90)?

A: Substitution is possible if the application tolerates both color temperature shift (3000K to 2700K) and reduced color rendering index (90 to 80). The electrical characteristics (3.1V, 150mA, 55 lm) and package dimensions remain identical. Applications in general illumination may accept this change; applications requiring accurate color reproduction (retail, display, photography) require evaluation.

Q: What is the inventory status of substitute parts?

A: SPMWH1228FD7WAV0SC (direct 3000K substitute) has 682 units in stock. The 2700K LM281B+ options range from 774 to 1053 units. The LM281BZ+ 2700K options range from 732 to 866 units. The original SPMWH1228FD7WAV0S3 has 54,987 units available. Inventory levels should be verified with the supplier for production commitments.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry RoHS Compliance status and MSL 2A (4 Weeks) moisture sensitivity rating, matching the original part's environmental and regulatory requirements.

Q: What packaging format is used for these LED components?

A: All parts use Tape & Reel (TR) packaging for the SPMWH1228 base number series. The SPMWH3228 base number series (LM281BZ+) does not specify packaging format in the provided data. Confirm packaging requirements with the supplier before procurement.

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