SPMWH1228FD7WAP0S2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAP0S2 is a Samsung Semiconductor LM281B series cool white LED in 2835 metric package (1113 case). This surface mount LED operates at 3.1V forward voltage with 150mA test current, delivering 54 lumens at 25°C with 120° viewing angle and 90 CRI. The part is marked as Not For New Designs, indicating end-of-life status. Identification of equivalent and substitute parts is necessary to support existing designs, maintain production continuity, and evaluate active alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

SPMWH1228FD7WAP0S2

Samsung Semiconductor, Inc.In Stock: 758SPMWH1228FD7WAP0S2 Datasheet

Current PartRFQ

SPMWH1228FD7WAP0SA

Samsung Semiconductor, Inc.In Stock: 822SPMWH1228FD7WAP0SA Datasheet

DirectRFQ

SPMWH3228FD7WAP0SE

Samsung Semiconductor, Inc.In Stock: 940SPMWH3228FD7WAP0SE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD7WAPKSE

Samsung Semiconductor, Inc.In Stock: 1042SPMWH3228FD7WAPKSE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD7WAPMSE

Samsung Semiconductor, Inc.In Stock: 932SPMWH3228FD7WAPMSE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAP0S2 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color and CCT: White, Cool 6500K (exact match required)
• Package / Case: 1113 (2835 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Viewing Angle: 120° (exact match required)
• CRI: 90 (exact match required)
• Test Current: 150mA (exact match required)
• Maximum Current: 160mA (exact match required)
• Size / Dimension: 3.50 × 2.80 mm (exact match required)
• Height - Seated (Max): 0.75 mm (exact match required)
• RoHS Status: RoHS Compliant (exact match required)
• MSL: 2A (4 Weeks) (exact match required)

Secondary Substitution Parameters (Allowable Variation):

• Forward Voltage (Vf): 3.0–3.1V (within circuit design tolerance)
• Flux @ 25°C: 51–56 lm (within specification range)
• Lumens/Watt: 110–120 lm/W (efficiency variation acceptable)
• Thermal Resistance: 17–25°C/W (thermal design dependent)
• Product Status: Active preferred over Not For New Designs

Substitute parts are classified into two categories:

Direct Manufacturer Substitute: SPMWH1228FD7WAP0SA (LM281B+ series, same base product number SPMWH1228, active status)

Parametric Equivalents: SPMWH3228FD7WAP0SE, SPMWH3228FD7WAPKSE, SPMWH3228FD7WAPMSE (LM281BZ+ series, different base product number SPMWH3228, active status, forward voltage 3.0V nominal)

Parameter Comparison

Engineering Selection Recommendations

SPMWH1228FD7WAP0SA (Direct Manufacturer Substitute): This part is the primary substitute for SPMWH1228FD7WAP0S2. It maintains the same base product number (SPMWH1228), identical package, dimensions, and electrical operating parameters. The LM281B+ series represents an active product line continuation. Forward voltage remains 3.1V. Flux output at 25°C is 51 lm (within 49–53 lm range), compared to 54 lm for the main part. Lumens/Watt efficiency is 110 lm/W versus 116 lm/W. Thermal resistance increases from 17°C/W to 25°C/W. All compliance certifications (RoHS, MSL 2A) are maintained. This substitute is suitable for direct replacement in existing designs without circuit modification.

SPMWH3228FD7WAP0SE, SPMWH3228FD7WAPKSE, SPMWH3228FD7WAPMSE (Parametric Equivalents): These three parts represent the LM281BZ+ series with different base product number (SPMWH3228). All three are parametrically equivalent to each other and differ from the main part in forward voltage (3.0V nominal versus 3.1V) and thermal resistance (25°C/W versus 17°C/W). Flux output is 54 lm (52–56 lm range), matching the main part specification. Lumens/Watt efficiency is 120 lm/W, exceeding the main part. All three maintain identical package, dimensions, viewing angle, CRI, and compliance status. The 0.1V forward voltage reduction may require circuit verification in current-limited designs. These parts are suitable for applications where the lower forward voltage and improved efficiency are compatible with circuit design parameters.

Inventory Availability:

• SPMWH1228FD7WAP0SA: 725 pcs
• SPMWH3228FD7WAP0SE: 856 pcs
• SPMWH3228FD7WAPKSE: 971 pcs
• SPMWH3228FD7WAPMSE: 883 pcs

All substitute parts carry active product status and full RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAP0SA be used as a direct drop-in replacement for SPMWH1228FD7WAP0S2?

A: Yes. SPMWH1228FD7WAP0SA is a direct manufacturer substitute with identical package (1113/2835 metric), dimensions (3.50 × 2.80 × 0.75 mm), forward voltage (3.1V), test current (150mA), viewing angle (120°), and CRI (90). The part maintains the same base product number and all compliance certifications. Flux output variation (51 lm versus 54 lm) and efficiency reduction (110 lm/W versus 116 lm/W) are within acceptable tolerance for most applications.

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

A: The direct substitute (SPMWH1228FD7WAP0SA) maintains the same series designation (LM281B+) and forward voltage (3.1V). Parametric equivalents (SPMWH3228 series, LM281BZ+) operate at 3.0V forward voltage and offer higher efficiency (120 lm/W). Both categories meet identical package, dimension, and optical specifications. Selection depends on circuit design tolerance for forward voltage variation.

Q: Are the parametric equivalents (SPMWH3228 series) compatible with existing PCB layouts?

A: Yes. All substitute parts use identical 1113 (2835 metric) package with dimensions 3.50 × 2.80 × 0.75 mm. PCB footprints and reflow profiles remain unchanged. However, the 0.1V lower forward voltage of the SPMWH3228 series may affect current regulation in designs using fixed resistor current limiting. Circuit verification is required if forward voltage tolerance is critical.

Q: Why does thermal resistance differ between the main part and substitutes?

A: The main part SPMWH1228FD7WAP0S2 specifies 17°C/W thermal resistance, while all substitutes specify 25°C/W. This difference reflects thermal design variations between the LM281B and LM281B+ / LM281BZ+ series. For applications with stringent thermal constraints, verify that the higher thermal resistance of substitutes remains acceptable for the target operating temperature range.

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

A: The main part SPMWH1228FD7WAP0S2 is marked as Not For New Designs, indicating end-of-life status. All substitute parts carry Active product status, ensuring continued availability and manufacturing support. For new designs, selection of an active substitute part is recommended.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts (SPMWH1228FD7WAP0SA, SPMWH3228FD7WAP0SE, SPMWH3228FD7WAPKSE, SPMWH3228FD7WAPMSE) are RoHS compliant with MSL 2A (4 Weeks) moisture sensitivity level, matching the main part specification.

Q: Can the three SPMWH3228 variants be used interchangeably?

A: Yes. SPMWH3228FD7WAP0SE, SPMWH3228FD7WAPKSE, and SPMWH3228FD7WAPMSE are parametrically identical. All three are LM281BZ+ series with 3.0V forward voltage, 54 lm flux, 120 lm/W efficiency, and 25°C/W thermal resistance. Differences in part number suffixes reflect packaging or distribution variants only. Selection may be based on inventory availability or supplier preference.