SPMWH1228FD7WAVMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAVMS2 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case) designed for surface mount lighting applications. This component operates at 3000K color temperature with 3.1V forward voltage and 150mA test current, delivering 51 lumens at 25°C with 90 CRI. The part is marked as Not For New Designs, making identification of equivalent and substitute components essential for ongoing production support and design alternatives.

Substiute Parts

SPMWH1228FD7WAVMS2

Samsung Semiconductor, Inc.In Stock: 1022SPMWH1228FD7WAVMS2 Datasheet

Current PartRFQ

SPMWH1228FD7WAVMSA

Samsung Semiconductor, Inc.In Stock: 1021SPMWH1228FD7WAVMSA Datasheet

DirectRFQ

SPMWH3228FD5WAW0SA

Samsung Semiconductor, Inc.In Stock: 1177SPMWH3228FD5WAW0SA Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAWKSA

Samsung Semiconductor, Inc.In Stock: 903SPMWH3228FD5WAWKSA Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAWMSA

Samsung Semiconductor, Inc.In Stock: 1065SPMWH3228FD5WAWMSA Datasheet

Parametric EquivalentRFQ

SPMWH3228FD7WAV0SE

Samsung Semiconductor, Inc.In Stock: 1157SPMWH3228FD7WAV0SE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD7WAVKSE

Samsung Semiconductor, Inc.In Stock: 965SPMWH3228FD7WAVKSE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD7WAVMSE

Samsung Semiconductor, Inc.In Stock: 966SPMWH3228FD7WAVMSE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAVMS2 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Color: White, Warm
• Viewing Angle: 120°
• Current - Test: 150mA
• Current - Maximum: 160mA
• Size / Dimension: 0.138" L × 0.110" W (3.50mm × 2.80mm)
• Height - Seated (Max): 0.030" (0.75mm)
• RoHS Compliance: Required
• MSL: 2A (4 Weeks)

Secondary Substitution Criteria (Allowable Variance):

• CCT (K): 2700K or 3000K (warm white range)
• Voltage - Forward (Vf): 3.0V to 3.1V
• Flux @ 25°C: 49–53 lm range
• CRI: 80–90
• Lumens/Watt: 110–114 lm/W
• Thermal Resistance: 17–25°C/W

Substitute parts must maintain identical mechanical footprint, electrical operating range, and environmental compliance. Series designation (LM281B, LM281B+, LM281BZ+) variations are acceptable when all electrical and mechanical parameters remain within specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute (Highest Compatibility):

SPMWH1228FD7WAVMSA is the primary direct substitute for SPMWH1228FD7WAVMS2. Both parts share identical mechanical specifications, package dimensions, and electrical operating parameters (3000K CCT, 3.1V Vf, 150mA test current, 120° viewing angle). The SPMWH1228FD7WAVMSA operates at Active product status, providing long-term availability and supply continuity. Lumens/Watt efficiency increases from 110 to 114 lm/W, representing improved performance within the same thermal and electrical envelope. Thermal resistance increases from 17°C/W to 25°C/W; thermal design review is required for applications with stringent thermal constraints.

Parametric Equivalents (Conditional Substitution):

The LM281BZ+ series parts (SPMWH3228FD5WAW0SA, SPMWH3228FD5WAWKSA, SPMWH3228FD5WAWMSA, SPMWH3228FD7WAV0SE, SPMWH3228FD7WAVKSE, SPMWH3228FD7WAVMSE) are parametric equivalents with the following considerations:

• All maintain identical mechanical footprint (1113/2835 package, 3.50mm × 2.80mm × 0.75mm)
• All support 150mA test current and 160mA maximum current
• All are RoHS Compliant with 2A MSL (4 Weeks)
• All are Active product status

Electrical Variance:

• Forward voltage reduced from 3.1V to 3.0V (0.1V lower)
• Lumens/Watt efficiency increases to 113 lm/W (3 lm/W higher)
• Thermal resistance increases to 25°C/W (8°C/W higher than main part)

Color Temperature Options:

• 2700K variants (SPMWH3228FD5WAW0SA, SPMWH3228FD5WAWKSA, SPMWH3228FD5WAWMSA): CRI 80
• 3000K variants (SPMWH3228FD7WAV0SE, SPMWH3228FD7WAVKSE, SPMWH3228FD7WAVMSE): CRI 90

Selection of 2700K variants requires application acceptance of lower CRI (80 vs. 90). Selection of any LM281BZ+ variant requires thermal design verification due to increased thermal resistance.

All substitute parts maintain compliance with RoHS and MSL requirements. No additional certifications or environmental qualifications are introduced by substitution.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAVMSA directly replace SPMWH1228FD7WAVMS2 without PCB modification?

A: Yes. Both parts share identical mechanical dimensions (0.138" L × 0.110" W × 0.030" max height), package type (1113/2835), and mounting footprint. No PCB layout changes are required. Forward voltage differs by 0.1V (3.1V vs. 3.1V); verify driver circuit compliance with 3.1V operation.

Q: What is the thermal impact of substituting with LM281BZ+ series parts?

A: Thermal resistance increases from 17°C/W (main part) to 25°C/W (LM281BZ+ variants). This 8°C/W increase affects junction temperature rise under identical power dissipation. Thermal design review is required for applications operating near maximum current (160mA) or in high-ambient-temperature environments. Recalculate thermal margins using the formula: ΔT = P × Rθ, where P is power dissipation in watts.

Q: Are 2700K and 3000K variants interchangeable?

A: Mechanically and electrically, yes. Both operate at 150mA test current, 3.0V Vf (LM281BZ+ series), and 120° viewing angle. However, 2700K variants have CRI 80, while 3000K variants have CRI 90. Application acceptance of lower color rendering index is required for 2700K selection. Verify end-user color quality requirements before substitution.

Q: What does "Not For New Designs" status mean for the main part?

A: SPMWH1228FD7WAVMS2 is obsolete or end-of-life for new product development. Samsung recommends using Active-status alternatives for new designs. For existing production support, SPMWH1228FD7WAVMSA (Active status) is the recommended substitute to ensure long-term supply availability.

Q: Are all substitute parts RoHS Compliant?

A: Yes. All listed substitute parts (SPMWH1228FD7WAVMSA and all LM281BZ+ variants) are RoHS Compliant with MSL 2A (4 Weeks). No additional environmental qualification is required.

Q: What is the difference between SPMWH3228FD5WAW0SA, SPMWH3228FD5WAWKSA, and SPMWH3228FD5WAWMSA?

A: All three are LM281BZ+ 2700K variants with identical electrical and mechanical specifications. Part number suffix variations (0SA, KSA, MSA) indicate different manufacturing batches or packaging configurations. Electrical performance and thermal characteristics are equivalent. Selection among these three is based on inventory availability and supplier allocation.

Q: Can I operate substitute parts at currents below 150mA?

A: Yes. All substitute parts support operation from below 150mA up to 160mA maximum. Flux output scales with current; operation below 150mA will reduce luminous output proportionally. Verify application brightness requirements before selecting reduced-current operation.

Q: Is forward voltage tolerance critical for circuit design?

A: Yes. The main part operates at 3.1V Vf (typical), while LM281BZ+ variants operate at 3.0V Vf (typical). This 0.1V difference affects total circuit voltage drop. For series-connected LED strings, cumulative voltage variance increases with string length. Verify driver circuit headroom and current regulation capability before substitution.