SPMWH3228FD5WAWMSG LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAWMSG is a Samsung Semiconductor LED lighting component in the LM281BZ+ series, specified for warm white 2700K applications. This surface-mount LED operates at 3V forward voltage with a 150mA test current and delivers 63 lumens at 25°C. The component is housed in a 2835 metric package (1113 case code) with a 120° viewing angle and 80 CRI rating.

The SPMWH3228FD5WAWMSG maintains Active product status. Substitute parts become necessary when addressing inventory constraints, supply chain discontinuities, or when the primary part reaches end-of-life status. The identified substitute parts belong to the LM281B series, which shares identical optical and thermal characteristics while operating at a marginally higher forward voltage.

Substiute Parts

SPMWH3228FD5WAWMSG

Samsung Semiconductor, Inc.In Stock: 969SPMWH3228FD5WAWMSG Datasheet

Current PartRFQ

SPMWH1228FD5WAWMS4

Samsung Semiconductor, Inc.In Stock: 8027SPMWH1228FD5WAWMS4 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAWUS4

Samsung Semiconductor, Inc.In Stock: 40493SPMWH1228FD5WAWUS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH3228FD5WAWMSG is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Color Temperature: 2700K (Warm White)
• Luminous Flux @ 25°C: 63 lm (61–65 lm range)
• Test Current: 150 mA
• Maximum Current: 160 mA
• Viewing Angle: 120°
• Color Rendering Index: 80
• Package: 2835 Metric (1113 case code)
• Mounting Type: Surface Mount
• Thermal Resistance: 25°C/W
• RoHS Status: Compliant
• MSL Rating: 2A (4 Weeks)

Allowable Variance:

• Forward Voltage (Vf): The substitute parts operate at 3.1V typical, compared to 3.0V for the main part. This 0.1V difference falls within acceptable circuit design margins for LED applications and does not compromise functional compatibility.

Series Transition: The substitute parts transition from the LM281BZ+ series (main part) to the LM281B series (substitutes). Both series maintain identical optical output, thermal characteristics, and package specifications. The LM281B series substitutes are designated "Not For New Designs," indicating they represent legacy alternatives suitable only for replacement or continuation of existing production runs.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SPMWH3228FD5WAWMSG): The SPMWH3228FD5WAWMSG is the recommended choice for new designs. It maintains Active product status, ensuring long-term availability and manufacturer support. The LM281BZ+ series represents the current generation with optimized performance characteristics, delivering 140 lm/W efficacy at the specified 150mA test current.

Substitute Part Selection (SPMWH1228FD5WAWMS4 or SPMWH1228FD5WAWUS4): The LM281B series substitutes are appropriate for:

• Continuation of existing production runs where design validation has already been completed
• Replacement scenarios where the primary part becomes unavailable
• Applications where the 0.1V forward voltage increase (3.0V to 3.1V) can be accommodated within circuit design margins

Both substitute parts carry "Not For New Designs" status, indicating they represent legacy alternatives. The SPMWH1228FD5WAWUS4 variant offers significantly higher inventory availability (40,403 pcs) compared to SPMWH1228FD5WAWMS4 (7,983 pcs), making it the preferred substitute when supply continuity is a consideration.

Compliance Verification: All three parts maintain RoHS compliance and identical MSL ratings (2A, 4 Weeks), ensuring compatibility with standard surface-mount assembly processes and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAWMS4 or SPMWH1228FD5WAWUS4 be used as direct replacements for SPMWH3228FD5WAWMSG?

A: Yes, within the constraints of circuit design. Both substitute parts maintain identical luminous flux (63 lm), color temperature (2700K), CRI (80), viewing angle (120°), package dimensions (2835 metric), and thermal characteristics (25°C/W). The forward voltage increases from 3.0V to 3.1V, a 0.1V difference that typically falls within acceptable design margins for LED driver circuits. Circuit validation is required to confirm voltage headroom in the specific application.

Q: What is the difference between SPMWH1228FD5WAWMS4 and SPMWH1228FD5WAWUS4?

A: Both parts are electrically and mechanically identical. The difference lies in packaging designation and inventory availability. SPMWH1228FD5WAWUS4 has significantly higher stock (40,403 pcs vs. 7,983 pcs), making it the preferred choice for supply chain continuity. Both are supplied in Tape & Reel format.

Q: Why do the substitute parts show lower luminous efficacy (135 lm/W vs. 140 lm/W)?

A: The efficacy difference reflects the generational advancement from LM281B to LM281BZ+ series. Despite the 5 lm/W reduction in efficacy, both maintain identical luminous flux output (63 lm) at the test current (150 mA), ensuring optical performance equivalence in the application.

Q: Are there any storage or handling differences between the main part and substitutes?

A: No. All three parts share identical MSL ratings (2A, 4 Weeks) and RoHS compliance status. Standard surface-mount component storage and handling protocols apply uniformly across all variants.

Q: What does "Not For New Designs" mean for the substitute parts?

A: This designation indicates that the LM281B series represents a legacy product line. Samsung recommends using the LM281BZ+ series (SPMWH3228FD5WAWMSG) for new product development. The LM281B substitutes are suitable only for maintaining existing designs or addressing temporary supply constraints.

Q: Can the forward voltage difference affect circuit performance?

A: The 0.1V increase (3.0V to 3.1V) requires verification within the specific circuit design. LED driver circuits typically accommodate ±0.2V variations. Confirm that the power supply or driver circuit has sufficient voltage headroom and that current regulation remains stable at the higher forward voltage.