SPMWH3228FD5WATKS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WATKS3 is a Samsung Semiconductor surface-mount LED lighting component from the LM281BZ series, specified for neutral white 4000K color temperature applications. This part operates at 3.1V forward voltage with a 150mA test current, delivering 63 lumens at 25°C with a 120° viewing angle in a 2835 metric package (1113 case).

The SPMWH3228FD5WATKS3 carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support ongoing production requirements, legacy system maintenance, and supply chain continuity when the primary part becomes unavailable.

Substiute Parts

SPMWH3228FD5WATKS3

Samsung Semiconductor, Inc.In Stock: 847SPMWH3228FD5WATKS3 Datasheet

Current PartRFQ

SPMWH1228FD5WAT0S3

Samsung Semiconductor, Inc.In Stock: 18353SPMWH1228FD5WAT0S3 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WATMS3

Samsung Semiconductor, Inc.In Stock: 37091SPMWH1228FD5WATMS3 Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAT0SE

Samsung Semiconductor, Inc.In Stock: 775SPMWH3228FD5WAT0SE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATKSE

Samsung Semiconductor, Inc.In Stock: 1008SPMWH3228FD5WATKSE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATMSE

Samsung Semiconductor, Inc.In Stock: 857SPMWH3228FD5WATMSE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH3228FD5WATKS3 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color: White, Neutral
• Color Temperature (CCT): 4000K
• Flux @ 25°C, 150mA: 63 lm (61–65 lm range)
• Forward Voltage (Typ): 3.1V or 3.0V
• Test Current: 150mA
• Maximum Current: 160mA
• Viewing Angle: 120°
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• CRI: 80
• Thermal Resistance: 25°C/W
• RoHS Compliance: RoHS Compliant or ROHS3 Compliant
• MSL: 2A (4 Weeks)

Identified Substitute Groups:

Group 1: LM281B Series (Not For New Designs)

• SPMWH1228FD5WAT0S3
• SPMWH1228FD5WATMS3

These parts maintain identical electrical and optical specifications to the main part, with the exception of the series designation (LM281B vs. LM281BZ). Both are packaged in Tape & Reel format and carry "Not For New Designs" status.

Group 2: LM281BZ+ Series (Active Status)

• SPMWH3228FD5WAT0SE
• SPMWH3228FD5WATKSE
• SPMWH3228FD5WATMSE

These parts represent active-status alternatives with improved efficiency (140 lm/W vs. 135 lm/W) and reduced forward voltage (3.0V vs. 3.1V). All maintain identical flux output, color temperature, CRI, and package specifications. Packaging format differs (not specified vs. Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Support and Maintenance:

The SPMWH1228FD5WAT0S3 and SPMWH1228FD5WATMS3 (LM281B series) provide direct electrical and optical equivalence to the SPMWH3228FD5WATKS3. Both maintain identical specifications across all critical parameters: 3.1V forward voltage, 63 lm flux output, 135 lm/W efficiency, and 4000K color temperature. These parts are suitable for direct replacement in existing designs where the LM281BZ series is currently deployed. Both carry "Not For New Designs" status, consistent with the main part. The SPMWH1228FD5WATMS3 offers higher inventory availability (37,005 pcs) compared to the SPMWH1228FD5WAT0S3 (18,310 pcs).

For Active Production and New Designs:

The LM281BZ+ series (SPMWH3228FD5WAT0SE, SPMWH3228FD5WATKSE, SPMWH3228FD5WATMSE) represents the recommended path forward. All three parts carry "Active" product status and deliver improved efficiency at 140 lm/W with reduced forward voltage of 3.0V. Optical and thermal characteristics remain identical to the main part. These alternatives support long-term supply chain stability and are suitable for new design implementations. All three variants maintain RoHS compliance and identical package specifications.

Compliance Considerations:

All substitute parts maintain RoHS compliance (either RoHS Compliant or ROHS3 Compliant status). Moisture sensitivity level (MSL 2A, 4 Weeks) is uniform across all parts. No compliance barriers exist for substitution.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAT0S3 or SPMWH1228FD5WATMS3 be used as direct replacements for SPMWH3228FD5WATKS3?

A: Yes. Both LM281B series parts are electrically and optically equivalent. They deliver identical flux (63 lm), forward voltage (3.1V), test current (150mA), color temperature (4000K), and CRI (80). Package dimensions, thermal resistance, and mounting type are identical. The primary difference is the series designation (LM281B vs. LM281BZ), which does not affect functional compatibility in applications designed for the main part.

Q: What are the differences between the LM281B and LM281BZ+ series substitutes?

A: The LM281BZ+ series (WAT0SE, WATKSE, WATMSE variants) offers improved efficiency at 140 lm/W compared to 135 lm/W for both LM281B and LM281BZ series. Forward voltage is reduced to 3.0V from 3.1V. Flux output, color temperature, CRI, and all mechanical specifications remain identical. The LM281BZ+ series carries "Active" product status, providing better long-term availability compared to the "Not For New Designs" status of the main part and LM281B alternatives.

Q: Are there packaging differences between substitute options?

A: The SPMWH1228FD5WAT0S3 and SPMWH1228FD5WATMS3 are supplied in Tape & Reel (TR) format. The LM281BZ+ variants (WAT0SE, WATKSE, WATMSE) do not specify packaging format in the provided data. All parts use identical 2835 metric (1113 case) package dimensions: 3.50 mm × 2.80 mm with 0.75 mm maximum seated height. Surface-mount compatibility is maintained across all options.

Q: Which substitute part offers the best inventory availability?

A: SPMWH1228FD5WATMS3 provides the highest inventory level at 37,005 pcs. SPMWH1228FD5WAT0S3 offers 18,310 pcs. Among the LM281BZ+ active alternatives, SPMWH3228FD5WATKSE provides 919 pcs, SPMWH3228FD5WATMSE offers 808 pcs, and SPMWH3228FD5WAT0SE has 760 pcs.

Q: Can LM281BZ+ parts be used in applications currently using LM281BZ?

A: Yes. The LM281BZ+ series maintains identical optical output (63 lm at 4000K), color rendering (CRI 80), and viewing angle (120°). The reduced forward voltage (3.0V vs. 3.1V) and improved efficiency (140 lm/W vs. 135 lm/W) represent performance enhancements. All mechanical and thermal specifications are identical. Applications designed for 3.1V operation will function with 3.0V parts, with the benefit of reduced power consumption.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitutes maintain RoHS compliance. SPMWH1228FD5WATMS3 carries ROHS3 Compliant status. All other parts, including the main part, are RoHS Compliant. Both certifications satisfy RoHS requirements.

Q: What is the moisture sensitivity level for all parts?

A: All parts, including the main part and all substitutes, carry MSL 2A (4 Weeks) rating. This indicates identical moisture handling and storage requirements across the entire substitution group.