SPMWH1228FD5WARMSC LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WARMSC is a Samsung Semiconductor LM281B+ series cool white LED in 2835 metric package (1113 case code) designed for surface mount lighting applications. This part operates at 5000K color temperature with 150mA nominal current and delivers 65 lumens at 25°C. The part is currently in Active product status with 1039 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require alternative qualified components. The SPMWH1228FD5WARMSC has identified parametric equivalents within the LM281B series that maintain electrical and mechanical compatibility.

Substiute Parts

SPMWH1228FD5WARMSC

Samsung Semiconductor, Inc.In Stock: 1116SPMWH1228FD5WARMSC Datasheet

Current PartRFQ

SPMWH1228FD5WAR0S3

Samsung Semiconductor, Inc.In Stock: 1747SPMWH1228FD5WAR0S3 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WARMS3

Samsung Semiconductor, Inc.In Stock: 1098SPMWH1228FD5WARMS3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH1228FD5WARMSC is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Color and CCT: White, Cool 5000K
• Flux output: 65 lm (63–67 lm range) at 25°C, 150mA
• Forward voltage: 3.1V typical
• Test current: 150mA
• Maximum current: 160mA
• Lumens/Watt efficiency: 140 lm/W
• CRI: 80
• Viewing angle: 120°
• Package: 1113 (2835 Metric)
• Physical dimensions: 3.50 × 2.80 mm, 0.75 mm max height
• Thermal resistance: 25°C/W
• Mounting: Surface Mount
• Packaging format: Tape & Reel

Identified Substitutes:

1. SPMWH1228FD5WAR0S3 – LM281B series (Not For New Designs status)
2. SPMWH1228FD5WARMS3 – LM281B series (Not For New Designs status)

Both substitutes maintain identical electrical performance, optical characteristics, and mechanical compatibility with the primary part. Differences exist only in series designation (LM281B vs. LM281B+) and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The SPMWH1228FD5WARMSC remains the preferred choice for new designs. This part carries Active product status, indicating full manufacturer support and long-term availability. It is RoHS Compliant and suitable for production deployment without lifecycle constraints.

Substitute Part Selection Criteria:

SPMWH1228FD5WAR0S3:

• Electrical and optical performance identical to primary part
• Product status: Not For New Designs
• RoHS3 Compliant certification
• Higher inventory availability (1732 units)
• Suitable for existing design revisions or legacy product support where new design constraints do not apply

SPMWH1228FD5WARMS3:

• Electrical and optical performance identical to primary part
• Product status: Not For New Designs
• RoHS Compliant certification
• Adequate inventory availability (1063 units)
• Suitable for existing design revisions or legacy product support where new design constraints do not apply

Selection Logic: For new product designs, use SPMWH1228FD5WARMSC. For existing designs requiring component replacement or inventory supplementation, either substitute part provides functional equivalence. The choice between substitutes depends on RoHS certification requirements (ROHS3 vs. standard RoHS) and inventory availability at time of procurement.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAR0S3 or SPMWH1228FD5WARMS3 be used as direct replacements for SPMWH1228FD5WARMSC in existing assemblies?

A: Yes. Both substitute parts maintain identical electrical specifications (3.1V forward voltage, 150mA test current, 160mA maximum), optical output (65 lumens at 25°C), color temperature (5000K), and mechanical dimensions (2835 package, 3.50 × 2.80 mm, 0.75 mm height). PCB layout, thermal management, and driver circuitry require no modification.

Q: What is the difference between LM281B and LM281B+ series designations?

A: The provided data specifies series designation only; no electrical or performance differences are documented between LM281B and LM281B+ variants in the supplied parameters. Both deliver identical flux, voltage, current, and efficiency characteristics.

Q: Are there any compliance differences between the substitute parts?

A: SPMWH1228FD5WAR0S3 carries ROHS3 Compliant certification, while SPMWH1228FD5WARMSC and SPMWH1228FD5WARMS3 carry standard RoHS Compliant certification. All three parts meet EAR99 export control and HTSUS 8541.41.0000 tariff classifications. Selection depends on specific compliance requirements of the end application.

Q: Why are the substitute parts marked "Not For New Designs"?

A: This designation indicates the parts are in mature or declining lifecycle phases. Manufacturers apply this status to manage inventory and encourage migration to newer series. For existing production or legacy support, these parts remain fully functional and available.

Q: What is the moisture sensitivity level, and does it affect storage?

A: All three parts carry MSL 2A rating with a 4-week floor life. Components must be stored in controlled humidity environments and used within 4 weeks of bag opening. Tape & Reel packaging provides protection during storage and transport.

Q: Can these LEDs be operated above 150mA?

A: Maximum rated current is 160mA for all three parts. Operation above this limit voids warranty and may reduce lifespan. The 150mA test current represents the standard operating point for flux and efficiency specifications.

Q: Are there thermal management considerations for 2835 package LEDs?

A: All three parts specify 25°C/W thermal resistance. Adequate PCB copper area and thermal vias are required to dissipate heat effectively. At 150mA and 3.1V (0.465W), thermal design must maintain junction temperature within device limits for sustained lumen output.