SPMWH3228FD5WAQMS4 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAQMS4 is a surface-mount LED from Samsung Semiconductor, Inc., featuring the LM281BZ series with cool white 5700K color temperature. This component delivers 68 lumens at 150mA test current with a forward voltage of 3.1V and 120° viewing angle in a 2835 metric package (1113 case code). The part is classified as Not For New Designs, indicating it has reached end-of-life status. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design transitions to active product lines.

Substiute Parts

SPMWH3228FD5WAQMS4

Samsung Semiconductor, Inc.In Stock: 1062SPMWH3228FD5WAQMS4 Datasheet

Current PartRFQ

SPMWH3228FD5WAQ0SG

Samsung Semiconductor, Inc.In Stock: 806SPMWH3228FD5WAQ0SG Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAQKSG

Samsung Semiconductor, Inc.In Stock: 665SPMWH3228FD5WAQKSG Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAQMSG

Samsung Semiconductor, Inc.In Stock: 787SPMWH3228FD5WAQMSG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPMWH3228FD5WAQMS4 are identified based on strict parametric equivalence across the following critical criteria:

Color and CCT Match: All substitute parts maintain White, Cool 5700K specification, ensuring identical color point and correlated color temperature.

Optical Performance: Luminous flux at 25°C and 150mA test current remains 68 lumens (66–70 lm range), with CRI of 80 preserved across all alternatives.

Electrical Compatibility: Test current of 150mA and maximum current rating of 160mA are consistent. Forward voltage differs minimally (3.0V vs. 3.1V typical), remaining within acceptable operating margins for series-connected LED applications.

Mechanical and Thermal Specifications: All substitutes share identical package code 1113 (2835 metric), physical dimensions (3.50 × 2.80 mm), seated height (0.75 mm max), and thermal resistance (25°C/W).

Compliance and Environmental: RoHS compliance and MSL 2A (4 Weeks) are maintained across all parts.

Series Evolution: Substitute parts are designated LM281BZ+ (enhanced version) with Active product status, providing a direct upgrade path from the Not For New Designs SPMWH3228FD5WAQMS4.

Parameter Comparison

Engineering Selection Recommendations

The three substitute parts—SPMWH3228FD5WAQ0SG, SPMWH3228FD5WAQKSG, and SPMWH3228FD5WAQMSG—are direct parametric equivalents to the SPMWH3228FD5WAQMS4. All three substitutes carry Active product status, providing long-term supply assurance compared to the Not For New Designs classification of the original part.

Electrical Compatibility: The forward voltage reduction from 3.1V to 3.0V (typical) in the substitute parts results in improved luminous efficiency (151 lm/W vs. 146 lm/W). This 0.1V difference is negligible in series-connected LED string applications and reduces power dissipation. For constant-current driver circuits, this change has no impact on circuit operation.

Optical and Thermal Equivalence: Luminous flux, color temperature, CRI, viewing angle, and thermal resistance are identical across all parts. Direct PCB footprint compatibility is confirmed through matching package dimensions and seated height.

Compliance Continuity: All substitute parts maintain RoHS compliance and MSL 2A (4 Weeks) specifications, ensuring compatibility with existing supply chain and assembly processes.

Product Lifecycle: Selection of any substitute part transitions designs from end-of-life to active product status, supporting long-term production continuity and component availability.

Frequently Asked Questions (FAQ)

Q: Can SPMWH3228FD5WAQ0SG, SPMWH3228FD5WAQKSG, or SPMWH3228FD5WAQMSG be used as direct drop-in replacements for SPMWH3228FD5WAQMS4?

A: Yes. All three substitute parts are mechanically and electrically compatible. Identical package code (1113/2835 metric), physical dimensions (3.50 × 2.80 mm), and seated height (0.75 mm) ensure PCB footprint compatibility. Electrical parameters—test current (150 mA), maximum current (160 mA), and luminous flux (68 lm)—are equivalent. The 0.1V forward voltage reduction (3.0V vs. 3.1V) is within acceptable operating margins for LED applications.

Q: What is the difference between the three substitute part numbers?

A: SPMWH3228FD5WAQ0SG, SPMWH3228FD5WAQKSG, and SPMWH3228FD5WAQMSG differ only in their packaging or distribution code suffix (0SG, KSG, MWSG). All three share identical electrical, optical, and thermal specifications. The differences reflect supplier or regional distribution variants with no impact on component performance or compatibility.

Q: Why do the substitute parts show 3.0V forward voltage instead of 3.1V?

A: The LM281BZ+ series (substitute parts) represents an enhanced version of the LM281BZ series (original part). The reduced typical forward voltage (3.0V vs. 3.1V) reflects improved LED die efficiency. This results in higher luminous efficiency (151 lm/W vs. 146 lm/W) while maintaining identical luminous output (68 lm at 150 mA). For constant-current driver circuits, this change is transparent. For voltage-regulated applications, the 0.1V reduction may slightly increase current through the LED; current-limiting resistors should be verified for the specific circuit topology.

Q: Are the substitute parts suitable for new designs?

A: Yes. All three substitute parts carry Active product status, making them appropriate for new designs. They provide superior long-term supply assurance compared to the Not For New Designs status of the original SPMWH3228FD5WAQMS4.

Q: Do the substitute parts require any circuit modifications?

A: No circuit modifications are required. The substitute parts operate within the same electrical and thermal parameters as the original part. Existing current-limiting resistor values and thermal management designs remain valid. The improved efficiency of the LM281BZ+ series may result in slightly lower power dissipation, which is beneficial for thermal performance.

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

A: Yes. SPMWH3228FD5WAQ0SG, SPMWH3228FD5WAQKSG, and SPMWH3228FD5WAQMSG are fully interchangeable. They share identical specifications and differ only in packaging or distribution codes. Selection among the three can be based on inventory availability or supplier preference.

Q: What is the impact of the improved lumens/watt rating on system design?

A: The increase from 146 lm/W to 151 lm/W represents approximately 3.4% improved efficiency. In constant-current applications, this translates to lower power dissipation per LED. For systems with thermal constraints, this improvement may allow higher operating currents or reduced heatsinking requirements. For fixed-brightness applications, the improved efficiency reduces overall system power consumption.