SPMWH1228FD7WAV0S2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAV0S2 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case). This surface mount LED operates at 3000K color temperature with 3.1V forward voltage and 150mA test current, delivering 51 lumens at 25°C. The part is marked as Not For New Designs, indicating end-of-life status. Direct substitutes and parametric equivalents are available from Samsung's active product portfolio to support ongoing production requirements and design transitions.

Key Parameters

Parameter	Value	Specification Range
Series	LM281B	LED series designation
Color	White, Warm	Warm white spectrum
CCT (K)	3000K	Correlated Color Temperature
Flux @ 25°C, 150mA	51 lm	49–53 lm range
Voltage - Forward (Vf)	3.1V	Typical value
Current - Test	150mA	Standard test condition
Current - Max	160mA	Absolute maximum
Lumens/Watt @ 150mA	110 lm/W	Luminous efficacy
CRI (Color Rendering Index)	90	Color accuracy rating
Viewing Angle	120°	Half-angle
Package / Case	1113 (2835 Metric)	Surface mount package
Size / Dimension	3.50mm × 2.80mm	Length × Width
Height - Seated (Max)	0.75mm	Maximum mounted height
Thermal Resistance	17°C/W	Package thermal characteristic
RoHS Status	RoHS Compliant	Environmental compliance
MSL (Moisture Sensitivity)	2A (4 Weeks)	Storage condition rating

Substitute Part Grouping Explanation

Substitution of SPMWH1228FD7WAV0S2 is determined by the following critical parameters:

Direct Substitutes maintain identical electrical and mechanical specifications:

Color: White, Warm
CCT: 3000K
Package: 1113 (2835 Metric)
Viewing Angle: 120°
Current - Test: 150mA
Current - Max: 160mA
Mounting Type: Surface Mount
Size: 3.50mm × 2.80mm
Height: 0.75mm maximum

Parametric Equivalents share the same package, mounting type, and mechanical dimensions but differ in one or more electrical parameters:

Series: LM281BZ+ (upgraded series)
Forward Voltage (Vf): 3.0V (versus 3.1V in main part)
Thermal Resistance: 25°C/W (versus 17°C/W in main part)
CCT options: 2700K or 3000K
CRI: 80 or 90 depending on variant
Lumens/Watt: 113 lm/W (versus 110 lm/W in main part)

All substitute parts are RoHS Compliant with MSL 2A (4 Weeks) rating and maintain the same flux output of 51 lumens at 25°C and 150mA test current.

Parameter Comparison

Parameter	SPMWH1228FD7WAV0S2 (Main)	SPMWH1228FD7WAV0SA (Direct)	SPMWH3228FD7WAV0SE (Parametric)	SPMWH3228FD5WAW0SA (Parametric)
Series	LM281B	LM281B+	LM281BZ+	LM281BZ+
Product Status	Not For New Designs	Active	Active	Active
Color	White, Warm	White, Warm	White, Warm	White, Warm
CCT (K)	3000K	3000K	3000K	2700K
Flux @ 25°C, 150mA	51 lm (49–53)	50 lm (48–52)	51 lm (49–53)	51 lm (49–53)
Voltage - Forward (Vf)	3.1V	3.1V	3.0V	3.0V
Current - Test	150mA	150mA	150mA	150mA
Current - Max	160mA	160mA	160mA	160mA
Lumens/Watt @ 150mA	110 lm/W	114 lm/W	113 lm/W	113 lm/W
CRI	90	90	90	80
Viewing Angle	120°	120°	120°	120°
Package / Case	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
Height - Seated (Max)	0.75mm	0.75mm	0.75mm	0.75mm
Thermal Resistance	17°C/W	25°C/W	25°C/W	25°C/W
RoHS Status	Compliant	Compliant	Compliant	Compliant
MSL	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Electrical Equivalent):

SPMWH1228FD7WAV0SA is the primary direct substitute. This LM281B+ variant maintains identical forward voltage (3.1V), current ratings (150mA test, 160mA max), viewing angle (120°), and package dimensions (1113/2835 metric, 3.50mm × 2.80mm, 0.75mm height). The part is Active status, ensuring long-term availability. Luminous efficacy improves to 114 lm/W compared to 110 lm/W in the main part, with flux output within the same 49–53 lm specification range at 25°C and 150mA. CRI remains 90. Thermal resistance increases from 17°C/W to 25°C/W; thermal design review is required for high-power or thermally constrained applications.

For Parametric Substitution (Same Package, Modified Electrical Characteristics):

The LM281BZ+ series (SPMWH3228 base number) offers active product status with improved luminous efficacy (113 lm/W). These parts operate at 3.0V forward voltage instead of 3.1V, reducing power dissipation by approximately 3% at 150mA. Thermal resistance is 25°C/W. Two CCT options are available:

3000K variants (SPMWH3228FD7WAV0SE, SPMWH3228FD7WAVKSE, SPMWH3228FD7WAVMSE): Maintain CRI 90 and 3000K color temperature matching the main part. Flux output is 51 lm at 25°C and 150mA.
2700K variants (SPMWH3228FD5WAW0SA, SPMWH3228FD5WAWKSA, SPMWH3228FD5WAWMSA): Provide warmer color temperature at 2700K with CRI 80. Flux output is 51 lm at 25°C and 150mA.

All parametric equivalents maintain identical package (1113/2835 metric), mounting type (surface mount), dimensions (3.50mm × 2.80mm), height (0.75mm), viewing angle (120°), current ratings (150mA test, 160mA max), and compliance certifications (RoHS, MSL 2A).

Selection Criteria:

Thermal performance critical: SPMWH1228FD7WAV0SA (17°C/W thermal resistance maintained via direct substitute).
Power efficiency priority: LM281BZ+ series (113–114 lm/W efficacy, 3.0V operation).
Color temperature flexibility: LM281BZ+ series offers 2700K or 3000K options.
Color rendering requirement: Select CRI 90 variants for applications requiring high color accuracy; CRI 80 acceptable for general illumination.
Long-term supply assurance: All substitute parts are Active status; direct substitute SPMWH1228FD7WAV0SA recommended for minimal design change.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAV0SA replace SPMWH1228FD7WAV0S2 without circuit modification?

A: Yes. SPMWH1228FD7WAV0SA is a direct substitute with identical forward voltage (3.1V), current ratings (150mA/160mA), package (1113/2835), and mechanical dimensions. No circuit changes are required. Thermal resistance increases from 17°C/W to 25°C/W; verify thermal design for high-power applications.

Q: What is the difference between direct substitutes and parametric equivalents?

A: Direct substitutes (SPMWH1228FD7WAV0SA) maintain all electrical and mechanical specifications of the main part. Parametric equivalents (LM281BZ+ series) share the same package and mounting type but differ in forward voltage (3.0V vs. 3.1V), thermal resistance (25°C/W vs. 17°C/W), and available color temperatures (2700K or 3000K). Parametric equivalents require circuit verification for voltage and thermal performance.

Q: Why is the main part marked "Not For New Designs"?

A: SPMWH1228FD7WAV0S2 is end-of-life. Samsung recommends transitioning to active products such as SPMWH1228FD7WAV0SA (direct substitute) or LM281BZ+ series (parametric equivalent) for new designs and ongoing production.

Q: Are all substitute parts RoHS compliant?

A: Yes. SPMWH1228FD7WAV0S2 and all listed substitutes are RoHS Compliant with MSL 2A (4 Weeks) moisture sensitivity rating.

Q: What is the impact of forward voltage difference (3.1V vs. 3.0V) in parametric equivalents?

A: At 150mA test current, the 0.1V difference reduces power dissipation by approximately 3% (from 465mW to 450mW). This improves thermal performance and reduces heat generation. Circuit current-limiting resistors or drivers must accommodate the lower voltage; verify LED string voltage calculations for series configurations.

Q: Can I use 2700K variants (CRI 80) instead of 3000K (CRI 90)?

A: Yes, if application requirements permit. 2700K provides warmer color appearance suitable for general illumination. CRI 80 is acceptable for non-critical applications; CRI 90 is required for color-critical applications such as retail display or photography lighting.

Q: What is the thermal resistance difference, and when does it matter?

A: Main part: 17°C/W. Parametric equivalents: 25°C/W. The 8°C/W difference becomes significant in high-power or thermally constrained designs. For example, at 150mA (465mW dissipation in main part), junction temperature rise is 7.9°C (main) vs. 11.6°C (equivalent). Verify thermal design for applications with ambient temperatures above 50°C or high LED density.

Q: Are the package dimensions identical across all parts?

A: Yes. All parts use 1113 (2835 metric) package with dimensions 3.50mm × 2.80mm and maximum seated height of 0.75mm. PCB footprints and reflow profiles are identical.

Q: What is the flux output consistency across substitutes?

A: All parts deliver 51 lumens at 25°C and 150mA test current, within the 49–53 lm specification range. Direct substitute SPMWH1228FD7WAV0SA outputs 50 lm (48–52 lm range), which is within acceptable tolerance for most applications.

Q: Which substitute offers the best luminous efficacy?

A: SPMWH1228FD7WAV0SA (direct substitute) delivers 114 lm/W, compared to 110 lm/W in the main part and 113 lm/W in LM281BZ+ parametric equivalents. The 4 lm/W improvement in the direct substitute provides better energy efficiency with identical electrical and thermal characteristics.

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