SPMWH1228FD5WAWKSC LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAWKSC is a surface-mount LED from Samsung Semiconductor's LM281B+ series, designed for warm white lighting applications at 2700K color temperature. This component is classified as Active product status and is suitable for new designs. The LED operates at 3.1V forward voltage with a test current of 150mA, delivering 59 lumens at 25°C with a luminous efficacy of 127 lm/W. The 2835 metric package (1113) provides a compact form factor for integration into lighting assemblies and fixtures.

Substitute parts become necessary when addressing inventory constraints, supply chain disruptions, or design flexibility requirements while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

SPMWH1228FD5WAWKSC

Samsung Semiconductor, Inc.In Stock: 891SPMWH1228FD5WAWKSC Datasheet

Current PartRFQ

SPMWH1228FD5WAWMS3

Samsung Semiconductor, Inc.In Stock: 7371SPMWH1228FD5WAWMS3 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAWUS3

Samsung Semiconductor, Inc.In Stock: 19793SPMWH1228FD5WAWUS3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAWKSC is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Color: White, Warm
• CCT: 2700K
• Forward Voltage (Vf): 3.1V typical
• Test Current: 150mA
• Flux @ 25°C: 59lm (57–61lm range)
• Luminous Efficacy: 127 lm/W
• CRI: 80
• Maximum Current: 160mA
• Viewing Angle: 120°

Mechanical Parameters (Must Match):

• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Size / Dimension: 3.50mm × 2.80mm
• Height - Seated (Max): 0.75mm
• Thermal Resistance: 25°C/W

Compliance Parameters (Must Match):

• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level: 2A (4 Weeks)
• Packaging: Tape & Reel (TR)

The substitute parts identified below maintain identical electrical performance, mechanical compatibility, and regulatory compliance with the main part number. Series designation differences (LM281B+ versus LM281B) do not affect substitution eligibility when all electrical and mechanical parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (New Designs): The SPMWH1228FD5WAWKSC remains the recommended choice for new product designs due to its Active product status. This designation ensures continued manufacturer support, process stability, and long-term availability.

Secondary Selection (Existing Designs / Inventory Constraints): The substitute parts SPMWH1228FD5WAWMS3 and SPMWH1228FD5WAWUS3 are classified as "Not For New Designs" but maintain complete electrical and mechanical equivalence to the main part. These substitutes are appropriate for:

• Replacement in existing production runs
• Addressing supply chain constraints
• Inventory optimization when primary part availability is limited

Both substitute parts carry identical RoHS compliance certification and MSL rating, ensuring regulatory and environmental compatibility with the main part across all applications.

Inventory Availability: SPMWH1228FD5WAWUS3 offers the highest current stock level (19,696 pcs), followed by SPMWH1228FD5WAWMS3 (7,277 pcs), with the primary part at 833 pcs. Selection should account for project timeline and volume requirements.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAWMS3 and SPMWH1228FD5WAWUS3 be used interchangeably with SPMWH1228FD5WAWKSC in existing circuit designs?

A: Yes. All three part numbers deliver identical electrical performance at the specified operating point (150mA, 3.1V, 59lm @ 25°C). The mechanical package, thermal characteristics, and compliance certifications are equivalent. Direct substitution in PCB layouts and driver circuits is supported without design modification.

Q: What is the significance of the series designation difference (LM281B+ versus LM281B)?

A: The series designation reflects internal Samsung product classification. However, the electrical parameters, optical output, and mechanical specifications are identical across all three part numbers. The series difference does not impact functional compatibility or performance in the application circuit.

Q: Why are SPMWH1228FD5WAWMS3 and SPMWH1228FD5WAWUS3 marked "Not For New Designs"?

A: This designation indicates that Samsung has transitioned these part numbers to mature or legacy status within their product portfolio. The SPMWH1228FD5WAWKSC (LM281B+ series) represents the current recommended part for new product development. However, the legacy parts remain fully functional and compliant for use in existing designs or as substitutes when primary part availability is constrained.

Q: Are there any thermal or reliability differences between the main part and substitutes?

A: No. All three parts specify identical thermal resistance (25°C/W) and moisture sensitivity level (2A, 4 Weeks). Reliability and thermal performance are equivalent across the product group.

Q: Can these parts be mixed within a single production batch?

A: Yes. Since all electrical, optical, and mechanical parameters are identical, mixing part numbers within a single assembly is permissible from a functional standpoint. However, traceability and quality documentation practices should be maintained according to your organization's procedures.

Q: What is the maximum operating current, and do all parts support it equally?

A: The maximum rated current is 160mA across all three part numbers. The test current specification is 150mA. All parts are rated for operation up to 160mA without exceeding absolute maximum ratings.

Q: Are the 2835 metric package dimensions identical across all three parts?

A: Yes. All parts conform to the 1113 (2835 Metric) package standard with dimensions of 3.50mm × 2.80mm and a maximum seated height of 0.75mm. PCB footprints and reflow profiles are identical.

Q: Do all parts meet RoHS compliance requirements?

A: Yes. SPMWH1228FD5WAWKSC, SPMWH1228FD5WAWMS3, and SPMWH1228FD5WAWUS3 are all RoHS Compliant and suitable for applications requiring environmental and regulatory compliance.