SPMWH1228FD5WAWUS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAWUS3 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case). This surface mount LED operates at 2700K color temperature with 3.1V forward voltage and 150mA test current, delivering 59 lumens at 25°C with 127 lm/W efficiency and 80 CRI. The part carries a "Not For New Designs" product status, making equivalent substitutes necessary for ongoing production and new applications. Substitute parts maintain identical electrical and optical performance while offering active product status alternatives.

Substiute Parts

SPMWH1228FD5WAWUS3

Samsung Semiconductor, Inc.In Stock: 19793SPMWH1228FD5WAWUS3 Datasheet

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SPMWH1228FD5WAW0SC

Samsung Semiconductor, Inc.In Stock: 919SPMWH1228FD5WAW0SC Datasheet

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SPMWH1228FD5WAWKSC

Samsung Semiconductor, Inc.In Stock: 891SPMWH1228FD5WAWKSC Datasheet

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SPMWH1228FD5WAWMS3

Samsung Semiconductor, Inc.In Stock: 7371SPMWH1228FD5WAWMS3 Datasheet

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SPMWH1228FD5WAWMSC

Samsung Semiconductor, Inc.In Stock: 758SPMWH1228FD5WAWMSC Datasheet

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SPMWH3228FD5WAW0SE

Samsung Semiconductor, Inc.In Stock: 1018SPMWH3228FD5WAW0SE Datasheet

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SPMWH3228FD5WAWKSE

Samsung Semiconductor, Inc.In Stock: 1002SPMWH3228FD5WAWKSE Datasheet

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SPMWH3228FD5WAWMSE

Samsung Semiconductor, Inc.In Stock: 883SPMWH3228FD5WAWMSE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Primary Substitution Criteria:

• Color: White, Warm (2700K CCT)
• Flux @ 25°C, 150mA: 59 lm (57–61 lm range)
• Forward Voltage (Vf): 3.1V or 3.0V (LM281BZ+ series)
• Test Current: 150mA
• Maximum Current: 160mA
• Viewing Angle: 120°
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Physical Dimensions: 3.50 × 2.80 mm
• Height - Seated (Max): 0.75 mm
• Thermal Resistance: 25°C/W
• RoHS Compliance: Required
• MSL: 2A (4 Weeks)

Series Variants:

• LM281B series (SPMWH1228 base): Not For New Designs status
• LM281B+ series (SPMWH1228 base): Active product status
• LM281BZ+ series (SPMWH3228 base): Active product status with 3.0V Vf and 131 lm/W efficiency

Substitutes are grouped into two categories: direct LM281B/LM281B+ equivalents with 3.1V forward voltage, and LM281BZ+ variants with 3.0V forward voltage and improved efficiency (131 lm/W vs. 127 lm/W).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (3.1V Forward Voltage):

Select SPMWH1228FD5WAW0SC, SPMWH1228FD5WAWKSC, or SPMWH1228FD5WAWMSC. These LM281B+ variants maintain identical electrical specifications (3.1V Vf, 127 lm/W) and carry Active product status, ensuring long-term availability and design continuity. All three parts are RoHS compliant with 2A MSL rating and Tape & Reel packaging.

For Improved Efficiency (3.0V Forward Voltage):

Select SPMWH3228FD5WAW0SE, SPMWH3228FD5WAWKSE, or SPMWH3228FD5WAWMSE. These LM281BZ+ variants deliver 131 lm/W efficiency (4% improvement) at reduced forward voltage (3.0V vs. 3.1V), reducing power dissipation in driver circuits. All three maintain 59 lm flux output, 2700K CCT, 80 CRI, and Active product status. Circuit design must accommodate the 0.1V lower forward voltage.

Product Status Consideration:

The main part SPMWH1228FD5WAWUS3 carries "Not For New Designs" status. For new product development, select only Active-status substitutes: LM281B+ series (SPMWH1228 base) or LM281BZ+ series (SPMWH3228 base).

Compliance:

All substitute parts are RoHS compliant and carry identical MSL 2A (4 Weeks) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAW0SC replace SPMWH1228FD5WAWUS3 in existing designs?

A: Yes. SPMWH1228FD5WAW0SC is electrically and mechanically identical to SPMWH1228FD5WAWUS3. Both operate at 3.1V forward voltage, 150mA test current, and deliver 59 lm at 2700K. The primary difference is product status: SPMWH1228FD5WAW0SC is Active, while SPMWH1228FD5WAWUS3 is Not For New Designs. No circuit modifications are required.

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

A: LM281B+ and LM281BZ+ differ in forward voltage and efficiency. LM281B+ operates at 3.1V with 127 lm/W efficiency. LM281BZ+ operates at 3.0V with 131 lm/W efficiency. Both deliver identical 59 lm flux at 2700K. The 0.1V voltage difference requires circuit verification if switching between series.

Q: Are all substitute parts available in Tape & Reel packaging?

A: LM281B and LM281B+ variants (SPMWH1228 base) are available in Tape & Reel packaging. LM281BZ+ variants (SPMWH3228 base) do not specify packaging type in the provided data. Confirm packaging availability with the supplier before design finalization.

Q: Do substitute parts meet RoHS and MSL requirements?

A: Yes. All substitute parts listed are RoHS compliant and carry MSL 2A (4 Weeks) rating, matching the main part SPMWH1228FD5WAWUS3. No additional handling or storage procedures are required.

Q: Can I use LM281BZ+ parts in designs originally specified for LM281B?

A: LM281BZ+ parts are electrically compatible for flux and color output (59 lm, 2700K, 80 CRI). However, the 0.1V lower forward voltage (3.0V vs. 3.1V) affects driver circuit design. Verify that the LED driver and current-limiting resistor values accommodate 3.0V operation before substitution.

Q: Which substitute offers the best long-term availability?

A: All LM281B+ and LM281BZ+ variants carry Active product status, ensuring continued availability. For new designs, LM281B+ series (SPMWH1228FD5WAW0SC, SPMWH1228FD5WAWKSC, SPMWH1228FD5WAWMSC) provide direct electrical compatibility with the original specification. LM281BZ+ series offers improved efficiency for power-sensitive applications.