SPMWH3228FD5WATMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WATMS3 is a Samsung Semiconductor surface-mount LED in the 2835 metric package (1113 case) emitting neutral white light at 4000K color temperature. This component is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. Identification of equivalent and substitute parts is necessary for design continuity, inventory management, and sourcing alternatives that maintain electrical and mechanical compatibility with existing applications.

Substiute Parts

SPMWH3228FD5WATMS3

Samsung Semiconductor, Inc.In Stock: 796SPMWH3228FD5WATMS3 Datasheet

Current PartRFQ

SPMWH1228FD5WAT0S3

Samsung Semiconductor, Inc.In Stock: 18353SPMWH1228FD5WAT0S3 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WATMS3

Samsung Semiconductor, Inc.In Stock: 37091SPMWH1228FD5WATMS3 Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAT0SE

Samsung Semiconductor, Inc.In Stock: 775SPMWH3228FD5WAT0SE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATKSE

Samsung Semiconductor, Inc.In Stock: 1008SPMWH3228FD5WATKSE Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATMSE

Samsung Semiconductor, Inc.In Stock: 857SPMWH3228FD5WATMSE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH3228FD5WATMS3 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color: White, Neutral
• Color Temperature: 4000K
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Luminous Flux @ 25°C, 150mA: 63 lm (61–65 lm range)
• Test Current: 150 mA
• Maximum Current: 160 mA
• Viewing Angle: 120°
• CRI: 80

Secondary Compatibility Factors:

• Forward Voltage (Typ): 3.0–3.1 V (minor variation acceptable within circuit design tolerance)
• Luminous Efficacy: 135–140 lm/W
• Thermal Resistance: 25°C/W
• RoHS Compliance: Required
• Moisture Sensitivity Level: 2A (4 Weeks)

Substitute parts are grouped into two categories:

Category A – LM281B Series (Parametric Equivalents): SPMWH1228FD5WATMS3, SPMWH1228FD5WAT0S3 – Identical electrical and optical performance to the main part. Series designation differs (LM281B vs. LM281BZ) but parameters remain within specification.

Category B – LM281BZ+ Series (Active Product Status): SPMWH3228FD5WAT0SE, SPMWH3228FD5WATKSE, SPMWH3228FD5WATMSE – Enhanced generation with forward voltage reduced to 3.0 V (typ) and luminous efficacy increased to 140 lm/W. Product status is Active, providing long-term availability. Mechanical and optical parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (Maintenance & Repair):

The SPMWH1228FD5WATMS3 and SPMWH1228FD5WAT0S3 (LM281B series) provide direct parametric equivalence to the SPMWH3228FD5WATMS3. Both parts maintain identical electrical specifications (3.1 V forward voltage, 150 mA test current, 135 lm/W efficacy) and optical characteristics (63 lm flux, 4000K, 80 CRI, 120° viewing angle). These substitutes are suitable for applications requiring exact performance matching in existing PCB layouts and driver circuits. Both parts carry RoHS compliance certification and identical moisture sensitivity ratings.

For New Designs & Long-Term Sourcing:

The LM281BZ+ series (SPMWH3228FD5WAT0SE, SPMWH3228FD5WATKSE, SPMWH3228FD5WATMSE) is the recommended substitution path. These parts carry Active product status, ensuring extended availability and supply chain continuity. The LM281BZ+ generation delivers improved luminous efficacy (140 lm/W vs. 135 lm/W) and reduced forward voltage (3.0 V vs. 3.1 V), resulting in lower power consumption and reduced thermal load. All three LM281BZ+ variants maintain identical optical and mechanical specifications, differing only in packaging configuration and supplier designation. All parts are RoHS Compliant and carry identical MSL ratings.

Voltage Consideration:

The 0.1 V reduction in forward voltage (3.1 V to 3.0 V) for LM281BZ+ parts is within typical circuit design tolerance for LED driver applications. Existing constant-current driver circuits will accommodate this variation without modification. For voltage-regulated applications, verify driver headroom to confirm compatibility.

Frequently Asked Questions (FAQ)

Q1: Can SPMWH1228FD5WATMS3 directly replace SPMWH3228FD5WATMS3 on existing PCBs?

A: Yes. Both parts use identical 1113 (2835 metric) package dimensions (3.50 × 2.80 × 0.75 mm) and surface-mount footprint. Electrical parameters are identical: 3.1 V forward voltage, 150 mA test current, 63 lm luminous flux, and 135 lm/W efficacy. The series designation change (LM281B vs. LM281BZ) reflects internal die revision but does not affect circuit compatibility.

Q2: What is the difference between LM281B and LM281BZ+ series?

A: The LM281B series (SPMWH1228 base number) represents an earlier generation with 3.1 V forward voltage and 135 lm/W efficacy. The LM281BZ+ series (SPMWH3228 base number) is an enhanced generation with 3.0 V forward voltage and 140 lm/W efficacy. Both maintain identical optical output (63 lm at 4000K) and mechanical compatibility. LM281BZ+ parts carry Active product status, ensuring long-term availability.

Q3: Are there packaging differences among the three LM281BZ+ variants?

A: The three LM281BZ+ parts (SPMWH3228FD5WAT0SE, SPMWH3228FD5WATKSE, SPMWH3228FD5WATMSE) differ in packaging designation and supplier configuration. SPMWH3228FD5WAT0SE and SPMWH3228FD5WATMSE are listed without specific packaging notation, while SPMWH3228FD5WATKSE includes packaging designation. All three maintain identical component specifications and are mechanically interchangeable.

Q4: Will the 0.1 V voltage reduction in LM281BZ+ parts affect my circuit?

A: The forward voltage reduction from 3.1 V to 3.0 V is within standard design tolerance for LED driver circuits. Constant-current driver topologies automatically compensate for this variation. For voltage-regulated supplies, verify that the driver provides sufficient headroom above the LED forward voltage. In most applications, no circuit modification is required.

Q5: Which substitute part should I select for new product designs?

A: Select one of the three LM281BZ+ variants (SPMWH3228FD5WAT0SE, SPMWH3228FD5WATKSE, or SPMWH3228FD5WATMSE). These parts carry Active product status, ensuring availability throughout the product lifecycle. The improved efficacy (140 lm/W) and reduced forward voltage (3.0 V) provide design advantages over the end-of-life LM281BZ and LM281B series.

Q6: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry RoHS compliance certification. SPMWH1228FD5WATMS3 is ROHS3 Compliant; all other parts are RoHS Compliant. Both certifications meet current regulatory requirements for electronic component manufacturing.

Q7: What is the moisture sensitivity level for these parts?

A: All parts carry MSL 2A (4 Weeks) rating. This indicates the component can be stored in dry conditions for up to 4 weeks before reflow soldering. Standard moisture control procedures during assembly are required.

Q8: Can I mix LM281B and LM281BZ+ parts in the same production run?

A: Yes, provided your circuit design accommodates the 0.1 V forward voltage difference. Both series maintain identical optical output (63 lm, 4000K, 80 CRI) and mechanical compatibility. Constant-current driver circuits will operate correctly with either series. For voltage-regulated applications, verify driver headroom for both voltage levels.