SPMWH3228FD5WATMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WATMS2 is a Samsung Semiconductor LM281BZ neutral white LED in 2835 metric package (1113 case) designed for surface mount applications. This component operates at 3.1V forward voltage with 150mA test current, delivering 59 lumens at 25°C with a color temperature of 4000K and 80 CRI. The part is classified as Not For New Designs, indicating it has been superseded in Samsung's product portfolio. Equivalent substitute parts are available with improved specifications and active product status, making them suitable for new design implementations and ongoing production requirements.

Substiute Parts

SPMWH3228FD5WATMS2

Samsung Semiconductor, Inc.In Stock: 915SPMWH3228FD5WATMS2 Datasheet

Current PartRFQ

SPMWH3228FD5WAT0SC

Samsung Semiconductor, Inc.In Stock: 1031SPMWH3228FD5WAT0SC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATKSC

Samsung Semiconductor, Inc.In Stock: 1205SPMWH3228FD5WATKSC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WATMSC

Samsung Semiconductor, Inc.In Stock: 1033SPMWH3228FD5WATMSC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH3228FD5WATMS2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Color: White, Neutral
• Color Temperature: 4000K
• Flux @ 25°C, 150mA: 59 lm (57–61 lm range)
• Test Current: 150mA
• Maximum Current: 160mA
• Viewing Angle: 120°
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• CRI: 80
• Thermal Resistance: 25°C/W
• RoHS Status: RoHS Compliant
• MSL Rating: 2A (4 Weeks)

Allowable Variation:

• Forward Voltage (Vf) Typical: 3.0V to 3.1V (minor reduction acceptable within circuit design tolerance)
• Lumens/Watt: Improvement from 127 lm/W to 131 lm/W (efficiency gain)
• Product Status: Transition from Not For New Designs to Active status

All three substitute parts meet these criteria and are direct parametric equivalents suitable for replacement in existing designs and new implementations.

Parameter Comparison

Engineering Selection Recommendations

SPMWH3228FD5WAT0SC, SPMWH3228FD5WATKSC, and SPMWH3228FD5WATMSC are direct parametric equivalents to the SPMWH3228FD5WATMS2 and are suitable for substitution in all applications requiring neutral white 4000K LEDs in 2835 metric packages.

Key Selection Factors:

1. Product Status: All three substitute parts carry Active product status, whereas the main part is classified as Not For New Designs. This distinction is significant for long-term supply chain planning and new design implementations.

2. Forward Voltage Reduction: The substitute parts operate at 3.0V typical forward voltage compared to 3.1V for the main part. This 0.1V reduction results in lower power dissipation and improved efficiency (131 lm/W versus 127 lm/W). Circuit designs operating at fixed current (150mA) will experience reduced voltage drop across the LED, allowing for lower supply voltage or reduced series resistor values.

3. Compliance and Certifications: All parts maintain identical RoHS compliance, MSL rating (2A, 4 Weeks), and thermal characteristics (25°C/W). No additional handling or storage procedures are required when transitioning between these parts.

4. Photometric Performance: Luminous flux output remains constant at 59 lm (57–61 lm range) across all parts at 25°C and 150mA test current. Color temperature, CRI, and viewing angle are identical.

5. Mechanical Compatibility: Package dimensions, mounting type, and thermal resistance are identical across all parts, ensuring direct PCB-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SPMWH3228FD5WAT0SC, SPMWH3228FD5WATKSC, or SPMWH3228FD5WATMSC be used as direct replacements for SPMWH3228FD5WATMS2?

A: Yes. All three substitute parts are parametric equivalents meeting identical electrical, optical, and mechanical specifications. The 0.1V reduction in forward voltage is within acceptable circuit design tolerance for constant-current LED driver applications.

Q: What is the significance of the product status change from "Not For New Designs" to "Active"?

A: The Not For New Designs status indicates the SPMWH3228FD5WATMS2 has been superseded. The substitute parts with Active status are current production items recommended for new design implementations and ongoing production. This ensures long-term supply availability and access to the latest manufacturing process improvements.

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

A: No. All parts share identical thermal resistance of 25°C/W. The lower forward voltage of the substitute parts (3.0V versus 3.1V) results in slightly reduced power dissipation at constant current, providing a marginal thermal benefit.

Q: Do the substitute parts require different PCB layout or assembly procedures?

A: No. The 1113 (2835 metric) package dimensions, surface mount configuration, and MSL rating (2A, 4 Weeks) are identical. Existing PCB designs and assembly processes require no modification.

Q: What is the impact of the 4 lm/W efficiency improvement in the substitute parts?

A: The increase from 127 lm/W to 131 lm/W represents a 3.1% efficiency gain. At constant 150mA test current and identical 59 lm output, this improvement reflects enhanced LED die performance in the LM281BZ+ series. System-level power consumption remains unchanged at fixed current operation, but the improved efficiency indicates superior manufacturing quality and process control.

Q: Are all three substitute parts interchangeable with each other?

A: Yes. SPMWH3228FD5WAT0SC, SPMWH3228FD5WATKSC, and SPMWH3228FD5WATMSC are identical in all electrical, optical, and mechanical parameters. The differences in part numbers reflect packaging or distribution channel variations only. Selection among these three parts may be based on inventory availability or supplier preference.

Q: What is the maximum operating current for these LEDs?

A: The maximum rated current is 160mA for all parts. The test current of 150mA is the standard reference condition for photometric measurements. Operation above 160mA will exceed component ratings and reduce lifespan.

Q: Do these LEDs require any special handling or storage conditions?

A: All parts carry MSL rating 2A with a 4-week floor life. Standard moisture-controlled storage (less than 60% relative humidity at 25°C) is required. Parts exposed to ambient conditions exceeding these parameters for more than 4 weeks must undergo baking procedures per IPC-A-610 standards before assembly.