SPMWH1228FD5WAWMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAWMS2 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case). This component operates at 2700K color temperature with 150mA test current and 3.1V forward voltage. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design transitions to active product lines.

Substiute Parts

SPMWH1228FD5WAWMS2

Samsung Semiconductor, Inc.In Stock: 1217SPMWH1228FD5WAWMS2 Datasheet

Current PartRFQ

SPMWH1228FD5WAW0SA

Samsung Semiconductor, Inc.In Stock: 1086SPMWH1228FD5WAW0SA Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAWKSA

Samsung Semiconductor, Inc.In Stock: 1077SPMWH1228FD5WAWKSA Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WAWMSA

Samsung Semiconductor, Inc.In Stock: 798SPMWH1228FD5WAWMSA Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAW0SC

Samsung Semiconductor, Inc.In Stock: 784SPMWH3228FD5WAW0SC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAWKSC

Samsung Semiconductor, Inc.In Stock: 938SPMWH3228FD5WAWKSC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAWMSC

Samsung Semiconductor, Inc.In Stock: 831SPMWH3228FD5WAWMSC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAWMS2 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Color: White, Warm (2700K CCT)
• Flux @ 25°C, 150mA: 55lm (53lm – 57lm range)
• Current - Test: 150mA
• Voltage - Forward (Vf) Typ: 3.1V or 3.0V
• CRI: 80
• Current - Max: 160mA
• Viewing Angle: 120°
• Package / Case: 1113 (2835 Metric)
• Size / Dimension: 3.50mm x 2.80mm
• Height - Seated (Max): 0.75mm
• Thermal Resistance: 25°C/W
• RoHS Status: RoHS Compliant
• MSL: 2A (4 Weeks)

Substitution Groups:

Group 1: LM281B+ Series (Active Status) Parts SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, and SPMWH1228FD5WAWMSA are direct parametric equivalents. These parts share identical electrical characteristics, package dimensions, and thermal properties with the main part. The primary distinction is product status (Active vs. Not For New Designs) and series designation (LM281B+ vs. LM281B). All three parts are functionally interchangeable.

Group 2: LM281BZ+ Series (Active Status, Modified Forward Voltage) Parts SPMWH3228FD5WAW0SC, SPMWH3228FD5WAWKSC, and SPMWH3228FD5WAWMSC represent an alternative series with forward voltage of 3.0V (versus 3.1V in the main part) and improved luminous efficacy (122 lm/W versus 118 lm/W). These parts maintain all other critical parameters and package specifications. The 0.1V forward voltage difference and enhanced efficiency define this substitution group.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, or SPMWH1228FD5WAWMSA. These LM281B+ series parts maintain 3.1V forward voltage and 118 lm/W efficiency identical to the main part. All three are Active status products with full RoHS compliance and equivalent MSL ratings. Selection among these three may be based on inventory availability and packaging lot requirements.

For Enhanced Efficiency Alternative: Select SPMWH3228FD5WAW0SC, SPMWH3228FD5WAWKSC, or SPMWH3228FD5WAWMSC. These LM281BZ+ series parts deliver 122 lm/W efficiency (4 lm/W improvement) with reduced forward voltage of 3.0V. This substitution is suitable for applications where power efficiency optimization is a design objective. All three maintain identical package dimensions, thermal characteristics, and compliance certifications. The 0.1V forward voltage reduction may require minor circuit adjustments in current-limiting designs.

Compliance Considerations: All substitute parts maintain RoHS compliance and 2A MSL rating, ensuring compatibility with standard manufacturing and storage protocols. No additional qualification is required from a regulatory or environmental standpoint.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, and SPMWH1228FD5WAWMSA be used interchangeably with SPMWH1228FD5WAWMS2?

A: Yes. These three LM281B+ parts are parametric equivalents with identical electrical specifications (3.1V Vf, 150mA test current, 118 lm/W, 55lm flux), package dimensions (2835 metric), and thermal properties. The only differences are product status (Active vs. Not For New Designs) and internal manufacturing variations. They are direct substitutes.

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

A: The LM281BZ+ series (SPMWH3228 base number) operates at 3.0V forward voltage versus 3.1V in LM281B+, and delivers 122 lm/W efficiency versus 118 lm/W. All other parameters—flux, CRI, viewing angle, package, and thermal resistance—are identical. The LM281BZ+ is suitable for applications prioritizing power efficiency.

Q: Does the 0.1V forward voltage difference between LM281B+ (3.1V) and LM281BZ+ (3.0V) affect circuit compatibility?

A: The 0.1V difference is within typical LED forward voltage tolerance ranges. In constant-current driver circuits, this difference has minimal impact. In resistive current-limiting designs, the reduced voltage may result in slightly lower current through the series resistor, requiring recalculation of the limiting resistor value to maintain 150mA test current if precise current control is required.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed—SPMWH1228FD5WAW0SA, SPMWH1228FD5WAWKSA, SPMWH1228FD5WAWMSA, SPMWH3228FD5WAW0SC, SPMWH3228FD5WAWKSC, and SPMWH3228FD5WAWMSC—are RoHS compliant with 2A MSL (4 Weeks) rating.

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

A: This status indicates the SPMWH1228FD5WAWMS2 has reached end-of-life and is no longer recommended for new product development. Existing inventory remains available for production support and maintenance. All listed substitute parts carry Active status, making them suitable for new designs and long-term production commitments.

Q: Can I mix different substitute parts in the same production batch?

A: Yes, within each substitution group. All three LM281B+ variants (WAW0SA, WAWKSA, WAWMSA) are electrically and mechanically identical and can be used interchangeably. Similarly, all three LM281BZ+ variants (WAW0SC, WAWKSC, WAWMSC) are interchangeable. However, mixing LM281B+ and LM281BZ+ series in the same batch introduces the 0.1V forward voltage difference and requires circuit verification.

Q: What is the package designation "1113 (2835 Metric)"?

A: This refers to the 2835 metric package size, a standard surface-mount LED package measuring 3.50mm length × 2.80mm width × 0.75mm maximum height. All listed parts use this identical package, ensuring mechanical compatibility with existing PCB designs and pick-and-place equipment.