SPMWH1228FD5WARKSC LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WARKSC is a Samsung Semiconductor LM281B+ cool white LED in 2835 metric package (1113 case code) designed for surface mount lighting applications. This part is classified as Active product status and is RoHS Compliant. The LM281B+ series represents the latest generation within the SPMWH1228 base product family. Substitute parts are necessary when the primary part experiences supply constraints, inventory depletion, or when design flexibility permits selection from equivalent alternatives within the same parametric class.

Substiute Parts

SPMWH1228FD5WARKSC

Samsung Semiconductor, Inc.In Stock: 785SPMWH1228FD5WARKSC 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 SPMWH1228FD5WARKSC is determined by strict parametric matching across the following criteria:

Primary Matching Parameters:

• Color and Correlated Color Temperature (CCT): White, Cool 5000K
• Luminous Flux @ 25°C at 150mA test current: 65 lm (63–67 lm range)
• Forward Voltage (Vf): 3.1V typical
• Test Current: 150mA
• Maximum Current Rating: 160mA
• Lumens per Watt Efficiency: 140 lm/W
• Color Rendering Index (CRI): 80
• Viewing Angle: 120°
• Package / Case: 1113 (2835 Metric)
• Thermal Resistance: 25°C/W
• Moisture Sensitivity Level: 2A (4 Weeks)
• Mounting Type: Surface Mount

Identified Substitute Parts: Both SPMWH1228FD5WAR0S3 and SPMWH1228FD5WARMS3 meet all primary parametric requirements. These parts share the same base product number (SPMWH1228) and are members of the LM281B series family. Differences exist only in product status designation and RoHS compliance certification level, which do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

SPMWH1228FD5WARKSC (Primary Selection)

This part is designated Active product status, indicating ongoing manufacturer support and suitability for new designs. It carries RoHS Compliant certification and represents the latest LM281B+ generation. Selection of this part is appropriate for applications requiring current-generation component qualification and long-term supply continuity.

SPMWH1228FD5WAR0S3 (Secondary Alternative)

This substitute meets all electrical and mechanical parameters identically to the primary part. However, it is classified as Not For New Designs, indicating the manufacturer has transitioned this variant to legacy status. ROHS3 Compliant certification is provided. This part is suitable only for replacement, repair, or continuation of existing production where design changes are not feasible. Higher inventory availability (1732 Pcs) may support short-term supply needs.

SPMWH1228FD5WARMS3 (Secondary Alternative)

This substitute meets all electrical and mechanical parameters identically to the primary part. It is classified as Not For New Designs. RoHS Compliant certification is provided. This part is suitable only for replacement, repair, or continuation of existing production where design changes are not feasible. Inventory availability (1063 Pcs) supports supply continuity.

Selection Logic:

For new designs, SPMWH1228FD5WARKSC is the specified choice. For existing production requiring substitution due to supply constraints, either SPMWH1228FD5WAR0S3 or SPMWH1228FD5WARMS3 provides parametric equivalence with no electrical or mechanical redesign required. All three parts are certified for RoHS compliance and share identical thermal, optical, and electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Are SPMWH1228FD5WAR0S3 and SPMWH1228FD5WARMS3 electrically interchangeable with SPMWH1228FD5WARKSC?

A: Yes. All three parts share identical electrical parameters: 3.1V forward voltage, 150mA test current, 160mA maximum current, 65 lm luminous flux at 25°C, and 140 lm/W efficiency. They are electrically interchangeable without circuit modification.

Q: Are these parts mechanically interchangeable?

A: Yes. All three parts use the 1113 (2835 Metric) package with identical dimensions (0.138" L × 0.110" W / 3.50mm × 2.80mm) and maximum seated height (0.030" / 0.75mm). They are mechanically interchangeable on standard 2835 footprints.

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

A: The LM281B+ (SPMWH1228FD5WARKSC) represents a newer generation within the SPMWH1228 family. The LM281B variants (SPMWH1228FD5WAR0S3, SPMWH1228FD5WARMS3) are earlier generations. All share identical parametric specifications for the provided data. The primary distinction is product status: LM281B+ is Active, while LM281B variants are Not For New Designs.

Q: Can I use SPMWH1228FD5WAR0S3 or SPMWH1228FD5WARMS3 in new product designs?

A: These parts are designated Not For New Designs by the manufacturer. For new designs, SPMWH1228FD5WARKSC (Active status) is the appropriate selection. The legacy parts are suitable only for replacement, repair, or continuation of existing production.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: Both certifications indicate compliance with RoHS (Restriction of Hazardous Substances) regulations. ROHS3 represents a specific certification variant. Both are acceptable for RoHS-regulated applications. Consult your compliance requirements if a specific RoHS variant is mandated.

Q: Are all three parts available in Tape & Reel (TR) packaging?

A: Yes. SPMWH1228FD5WARKSC, SPMWH1228FD5WAR0S3, and SPMWH1228FD5WARMS3 are all supplied in Tape & Reel packaging suitable for automated assembly.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts are rated MSL 2A with a 4-week floor life. This indicates moderate moisture sensitivity requiring standard dry storage and handling procedures.

Q: Can these parts be used interchangeably in existing production?

A: Yes. If your current production uses SPMWH1228FD5WARKSC and supply becomes constrained, SPMWH1228FD5WAR0S3 or SPMWH1228FD5WARMS3 provide direct parametric substitution without design modification, circuit redesign, or thermal analysis changes.