SPMWH3228FD5WARMSG LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WARMSG is a Samsung Semiconductor surface-mount LED lighting component featuring the LM281BZ+ series. This cool white 5000K LED operates at 3V forward voltage with a 150mA test current, delivering 69 lumens at 25°C in a compact 2835 metric package (1113 case). The component is currently in active product status with 1010 units in stock.

Substitute parts become necessary when the primary component reaches end-of-life status, experiences supply constraints, or when design requirements permit operation with alternative LED series that maintain equivalent optical and electrical performance within specified tolerances.

Substiute Parts

SPMWH3228FD5WARMSG

Samsung Semiconductor, Inc.In Stock: 1092SPMWH3228FD5WARMSG Datasheet

Current PartRFQ

SPMWH1228FD5WAR0S4

Samsung Semiconductor, Inc.In Stock: 36899SPMWH1228FD5WAR0S4 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WARMS4

Samsung Semiconductor, Inc.In Stock: 35236SPMWH1228FD5WARMS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH3228FD5WARMSG is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Color and CCT: White, Cool 5000K
• Flux output at 25°C, 150mA test current: 69 lm (67–71 lm range)
• Test current: 150 mA
• Maximum current rating: 160 mA
• Viewing angle: 120°
• Package / Case: 1113 (2835 Metric)
• Mounting type: Surface Mount
• Thermal resistance: 25°C/W
• RoHS compliance and MSL rating: RoHS Compliant, 2A (4 Weeks)

Allowable Variation:

• Forward voltage (Typ): 3.0–3.1V (tolerance range for equivalent operation)
• Lumens/Watt efficiency: 148–153 lm/W (within acceptable performance band)
• LED series designation: LM281BZ+ or LM281B (same optical family)

The two identified substitute parts—SPMWH1228FD5WAR0S4 and SPMWH1228FD5WARMS4—both utilize the LM281B series and meet all critical parameters. The primary distinction is product status: the main part is Active, while substitutes are designated Not For New Designs, indicating they remain available for existing designs but are not recommended for new development.

Parameter Comparison

Engineering Selection Recommendations

For Active Designs: The SPMWH3228FD5WARMSG remains the preferred selection due to its Active product status. This designation ensures continued manufacturer support, long-term availability, and ongoing quality assurance. The component delivers 153 lm/W efficiency at the specified 150mA test current.

For Existing Designs Requiring Substitution: Both SPMWH1228FD5WAR0S4 and SPMWH1228FD5WARMS4 are functionally equivalent substitutes. These parts are designated Not For New Designs, indicating they are available for sustaining production of existing designs but should not be selected for new development initiatives.

Electrical Compatibility: The forward voltage differential between the main part (3.0V) and substitutes (3.1V) represents a 0.1V increase. This 3.3% variation falls within acceptable tolerance for series-connected LED applications and does not require circuit redesign. Power dissipation increases marginally (0.015W per LED at 150mA), which remains within the 25°C/W thermal resistance specification.

Optical Performance: All three parts deliver identical flux output (69 lm, 67–71 lm range) at 25°C and 150mA. The substitute parts exhibit 3.3% lower efficiency (148 vs. 153 lm/W), which is acceptable for applications where absolute efficiency is not a critical design constraint.

Compliance and Certification: All parts maintain RoHS compliance and identical MSL ratings (2A, 4 Weeks). No additional handling or storage procedures are required when transitioning between these parts.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAR0S4 or SPMWH1228FD5WARMS4 be used as direct replacements in existing SPMWH3228FD5WARMSG designs?

A: Yes. Both substitute parts meet all critical electrical and optical parameters. The 0.1V forward voltage increase (3.0V to 3.1V) is within acceptable tolerance for series LED circuits. No circuit modifications are required.

Q: What is the difference between SPMWH1228FD5WAR0S4 and SPMWH1228FD5WARMS4?

A: Both parts are electrically and optically identical. The difference lies in packaging designation within Samsung's internal part numbering system. Both are supplied in Tape & Reel (TR) format. Selection between them depends on supplier availability and internal procurement requirements.

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

A: This designation indicates that Samsung has transitioned these LED series to end-of-life status. The parts remain available for sustaining production of existing designs but are not recommended for new product development. The SPMWH3228FD5WARMSG (LM281BZ+ series) represents the current generation and should be selected for all new designs.

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

A: No. All three parts share identical thermal resistance (25°C/W) and identical physical dimensions (3.50mm × 2.80mm × 0.75mm max height). Thermal performance in PCB layouts remains unchanged.

Q: What is the impact of the 5 lm/W efficiency difference on system power consumption?

A: At 150mA test current, the efficiency difference (153 vs. 148 lm/W) results in approximately 0.015W additional power dissipation per LED. For a typical application with 100 LEDs, this represents 1.5W total system increase. This is negligible for most lighting applications and remains within thermal design margins.

Q: Can these parts be mixed in the same assembly?

A: Yes. All three parts deliver identical flux output (69 lm) and CRI (80) at the specified test current. Mixing SPMWH3228FD5WARMSG with either substitute part will not produce visible color or brightness variation in the final application.

Q: What packaging formats are available?

A: The main part (SPMWH3228FD5WARMSG) is supplied in standard packaging format. Both substitute parts are supplied in Tape & Reel (TR) format, which is standard for high-volume surface-mount assembly. Confirm packaging requirements with your procurement department before ordering.

Q: Are there any moisture sensitivity or storage requirement differences?

A: No. All parts carry identical MSL rating (2A, 4 Weeks). Storage and handling procedures are identical across all three parts.