SPMWH1228FD5WAUKSC LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAUKSC is a Samsung Semiconductor LM281B+ warm white LED in 2835 metric package (1113 case code) designed for surface mount lighting applications. This part operates at 3500K color temperature with 64 lm nominal flux at 25°C and 150 mA test current. The product is currently Active status with 985 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from equivalent product lines. The LM281B+ series has been superseded by the LM281B series, making substitute identification critical for ongoing production support and component procurement planning.

Substiute Parts

SPMWH1228FD5WAUKSC

Samsung Semiconductor, Inc.In Stock: 1025SPMWH1228FD5WAUKSC Datasheet

Current PartRFQ

SPMWH1228FD5WAV0S4

Samsung Semiconductor, Inc.In Stock: 12781SPMWH1228FD5WAV0S4 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAVMS4

Samsung Semiconductor, Inc.In Stock: 40732SPMWH1228FD5WAVMS4 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAVUS4

Samsung Semiconductor, Inc.In Stock: 41217SPMWH1228FD5WAVUS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH1228FD5WAUKSC is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility:

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

Electrical Compatibility:

• Forward Voltage (Vf) Typical: 3.1V
• Test Current: 150 mA
• Maximum Current: 160 mA
• Flux @ 25°C, 150 mA: 64 lm (62–66 lm range)
• Lumens per Watt @ Test Current: 138 lm/W
• Viewing Angle: 120°

Optical Characteristics:

• Color: White, Warm
• Color Rendering Index (CRI): 80

Compliance & Environmental:

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

The three substitute parts listed below meet all mechanical and electrical compatibility requirements. The primary difference is the CCT (Correlated Color Temperature): the main part operates at 3500K, while all substitute parts operate at 3000K. This represents a shift toward warmer color temperature but maintains identical electrical performance, thermal characteristics, and package specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (SPMWH1228FD5WAUKSC): The SPMWH1228FD5WAUKSC maintains Active product status and is the preferred selection for new designs and ongoing production. This part is RoHS Compliant and carries MSL 2A certification. Current inventory of 985 units supports immediate procurement requirements.

Substitute Parts (SPMWH1228FD5WAV0S4, SPMWH1228FD5WAVMS4, SPMWH1228FD5WAVUS4): All three substitute parts are designated "Not For New Designs" and represent the legacy LM281B series. These parts are electrically and mechanically equivalent to the primary part with the exception of CCT specification (3000K versus 3500K). Selection among the three substitutes should be based on inventory availability and supply chain logistics:

• SPMWH1228FD5WAVUS4: 41,107 units in stock
• SPMWH1228FD5WAVMS4: 40,665 units in stock
• SPMWH1228FD5WAV0S4: 12,676 units in stock

All substitute parts maintain RoHS Compliance and MSL 2A certification, ensuring compatibility with standard surface mount assembly processes and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAV0S4, SPMWH1228FD5WAVMS4, or SPMWH1228FD5WAVUS4 be used as direct replacements for SPMWH1228FD5WAUKSC?

A: Yes, from an electrical and mechanical standpoint. All three substitute parts share identical forward voltage (3.1V), test current (150 mA), maximum current (160 mA), flux output (64 lm at 25°C), lumens per watt (138 lm/W), CRI (80), viewing angle (120°), package dimensions (3.50 mm × 2.80 mm), and thermal resistance (25°C/W). The primary difference is color temperature: substitutes operate at 3000K (warmer) versus the main part at 3500K. This difference is optical only and does not affect circuit operation or thermal performance.

Q: What is the significance of the "Not For New Designs" status on the substitute parts?

A: This designation indicates that the LM281B series is legacy product. Samsung Semiconductor recommends the LM281B+ series (represented by the main part SPMWH1228FD5WAUKSC) for new design implementations. However, the substitute parts remain fully functional and available for existing production lines, maintenance, and field replacements where design changes are not feasible.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: No. All parts are RoHS Compliant and carry identical MSL 2A (4 Weeks) moisture sensitivity certification. Both certifications apply uniformly across the main part and all three substitutes, ensuring compatibility with standard manufacturing and storage protocols.

Q: How do the three substitute parts differ from each other?

A: SPMWH1228FD5WAV0S4, SPMWH1228FD5WAVMS4, and SPMWH1228FD5WAVUS4 are electrically and mechanically identical. The differences in part numbers reflect different manufacturing batches or supply chain designations. Inventory levels vary: SPMWH1228FD5WAVUS4 (41,107 units), SPMWH1228FD5WAVMS4 (40,665 units), and SPMWH1228FD5WAV0S4 (12,676 units). Selection should be based on procurement availability and supply chain requirements.

Q: Will substituting a 3000K part for a 3500K part affect circuit design or PCB layout?

A: No. The color temperature difference is an optical characteristic only. All electrical parameters, thermal properties, package dimensions, and mounting requirements are identical. PCB layout, circuit design, and assembly processes require no modification.

Q: What is the thermal resistance specification, and why is it important?

A: Thermal resistance of 25°C/W indicates the temperature rise per watt of power dissipation. This specification is identical across all four parts and is critical for thermal management calculations in high-density LED arrays or applications with elevated ambient temperatures. The specification applies uniformly to the main part and all substitutes.

Q: Are these parts suitable for tape and reel packaging in automated assembly?

A: Yes. All parts are supplied in Tape & Reel (TR) packaging, which is standard for automated surface mount assembly equipment. Moisture sensitivity level MSL 2A (4 Weeks) requires standard dry storage and handling protocols but does not impose special requirements beyond industry-standard practices.