SPMWH1228FD5WAQMS2 Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAQMS2 is a Samsung Semiconductor LM281B series cool white LED in 2835 metric package (1113 case). This surface mount LED operates at 3.1V forward voltage with 150mA test current, delivering 60lm at 25°C with a color temperature of 5700K and 80 CRI. The part is marked as Not For New Designs, indicating end-of-life status. Identifying equivalent substitute parts is necessary for design continuity, inventory management, and sourcing alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

SPMWH1228FD5WAQMS2

Samsung Semiconductor, Inc.In Stock: 866SPMWH1228FD5WAQMS2 Datasheet

Current PartRFQ

SPMWH1228FD5WAQMSA

Samsung Semiconductor, Inc.In Stock: 1136SPMWH1228FD5WAQMSA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAQMS2 is determined by strict alignment of the following critical parameters:

Electrical Compatibility:

• Color: White, Cool (5700K CCT)
• Forward Voltage (Vf): 3.1V typical
• Test Current: 150mA
• Maximum Current: 160mA
• CRI: 80

Optical Compatibility:

• Flux output at 25°C and 150mA test current within acceptable range (58–63lm)
• Lumens/Watt efficiency within product line specifications
• Viewing Angle: 120°

Mechanical & Package Compatibility:

• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Physical dimensions: 3.50mm × 2.80mm
• Height - Seated (Max): 0.75mm
• Thermal Resistance: 25°C/W

Compliance & Environmental:

• RoHS Compliant
• MSL: 2A (4 Weeks)

The substitute part SPMWH1228FD5WAQMSA meets all these criteria while representing an upgraded series variant (LM281B+) with improved product status and higher luminous efficiency.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using SPMWH1228FD5WAQMS2:

The SPMWH1228FD5WAQMSA is a direct substitute. The main part is marked Not For New Designs, indicating end-of-life status. The substitute part is Active and represents an upgraded variant within the same LM281B product family. All electrical parameters (forward voltage, test current, maximum current, CRI) are identical. Optical performance is equivalent, with the substitute delivering 61lm versus 60lm at 25°C and 150mA, both within the specified range. Mechanical compatibility is complete: identical package (1113/2835), dimensions (3.50mm × 2.80mm), height (0.75mm), and thermal resistance (25°C/W).

Compliance Considerations:

Both parts are RoHS Compliant and carry identical MSL ratings (2A, 4 Weeks). No design changes are required for regulatory or environmental compliance when substituting.

Efficiency Improvement:

The substitute part delivers 131 lm/W versus 129 lm/W, representing a 1.5% efficiency gain. This is a performance benefit with no design impact.

Sourcing Status:

The substitute part has higher inventory availability (1038 Pcs vs. 838 Pcs) and active product status, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAQMSA be used as a direct replacement for SPMWH1228FD5WAQMS2 without PCB modifications?

A: Yes. Both parts share identical forward voltage (3.1V), test current (150mA), maximum current (160mA), package (1113/2835), and physical dimensions (3.50mm × 2.80mm × 0.75mm height). No circuit or layout changes are required.

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

A: LM281B+ is an upgraded variant within the same product family. The SPMWH1228FD5WAQMSA (LM281B+) maintains all electrical and mechanical specifications of the LM281B while offering improved luminous efficiency (131 lm/W vs. 129 lm/W) and Active product status versus Not For New Designs.

Q: Are the optical characteristics identical?

A: Optical characteristics are equivalent. Both parts deliver 5700K CCT, 80 CRI, and 120° viewing angle. Flux output at 25°C and 150mA is 60lm (main part) and 61lm (substitute), both within the 58–63lm specification range.

Q: Does the substitute part have the same thermal properties?

A: Yes. Thermal resistance is identical at 25°C/W for both parts.

Q: Are there any compliance or environmental differences?

A: No. Both parts are RoHS Compliant with identical MSL ratings (2A, 4 Weeks). Packaging is identical (Tape & Reel).

Q: Why is the main part marked Not For New Designs?

A: This indicates end-of-life status. The SPMWH1228FD5WAQMSA (Active status) is the recommended path for new designs and ongoing production.

Q: What is the inventory situation?

A: The substitute part has higher availability (1038 Pcs) compared to the main part (838 Pcs), supporting better supply chain continuity.