SPMWH1228FD7WAQKS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAQKS2 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 55 lumens at 25°C with a color temperature of 5700K and 90 CRI. The part is marked as Not For New Designs, indicating it has been superseded in Samsung's product portfolio. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and component sourcing continuity.

Substiute Parts

SPMWH1228FD7WAQKS2

Samsung Semiconductor, Inc.In Stock: 1023SPMWH1228FD7WAQKS2 Datasheet

Current PartRFQ

SPMWH1228FD7WAQKSA

Samsung Semiconductor, Inc.In Stock: 810SPMWH1228FD7WAQKSA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPMWH1228FD7WAQKS2 is determined by the following critical parameters:

Primary Matching Criteria:

• Color specification: White, Cool 5700K
• Package type: 1113 (2835 Metric) surface mount
• Forward voltage: 3.1V nominal
• Test current: 150mA
• Viewing angle: 120°
• CRI: 90 minimum
• Compliance: RoHS Compliant, MSL 2A

Acceptable Variation Ranges:

• Luminous flux @ 25°C: 50–57 lm (encompasses both main part and substitute specifications)
• Lumens/Watt efficiency: 112–118 lm/W
• Thermal resistance: 17–25°C/W
• Maximum current: 160mA

The substitute part SPMWH1228FD7WAQKSA belongs to the LM281B+ series, which maintains identical electrical, optical, and mechanical specifications within the acceptable variation ranges. Both parts share the same base product number (SPMWH1228), package footprint, and thermal/compliance characteristics, confirming direct substitutability.

Parameter Comparison

Engineering Selection Recommendations

For Ongoing Production and Maintenance:

The SPMWH1228FD7WAQKSA is the direct substitute for SPMWH1228FD7WAQKS2. The substitute part is in Active product status, ensuring long-term availability and supply chain continuity. Both parts are manufactured by Samsung Semiconductor and carry identical RoHS compliance and export classification (EAR99).

Electrical Compatibility:

The substitute maintains identical forward voltage (3.1V), test current (150mA), and maximum current (160mA) specifications. The luminous flux variation (52 lm vs. 55 lm at 25°C) falls within the acceptable tolerance range for cool white 5700K LEDs in this package class. The efficiency difference (112 lm/W vs. 118 lm/W) reflects normal manufacturing variation within the LM281B product family.

Thermal Considerations:

The substitute exhibits higher thermal resistance (25°C/W vs. 17°C/W). In applications where thermal management is critical, this parameter must be evaluated against the specific PCB design and operating environment. Both values remain within acceptable limits for 2835 metric package LEDs.

Compliance and Certification:

Both parts maintain identical MSL 2A (4 Weeks) moisture sensitivity classification and RoHS compliance status. No additional qualification or testing is required for direct substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAQKSA be used as a direct replacement for SPMWH1228FD7WAQKS2 in existing PCB assemblies?

A: Yes. Both parts share identical package footprint (1113/2835 metric), mounting type (surface mount), electrical specifications (3.1V, 150mA), and optical characteristics (5700K, 90 CRI, 120° viewing angle). No PCB redesign is required.

Q: What is the difference in luminous flux between the main part and substitute?

A: The main part delivers 55 lm at 25°C and 150mA, while the substitute delivers 52 lm under identical conditions. This 3 lm difference (approximately 5.5%) is within normal manufacturing tolerance for cool white LEDs and does not affect functional compatibility.

Q: Why does the substitute have higher thermal resistance (25°C/W vs. 17°C/W)?

A: Thermal resistance variation within the LM281B product family reflects differences in die design and packaging between the LM281B and LM281B+ series. Both values are acceptable for 2835 metric package applications. Thermal performance should be verified in applications with stringent temperature management requirements.

Q: Are there any supply chain advantages to using the substitute part?

A: Yes. The SPMWH1228FD7WAQKSA is in Active product status, while the main part is marked Not For New Designs. The substitute ensures continued availability and long-term supply security for production and maintenance applications.

Q: Do both parts require identical handling and storage conditions?

A: Yes. Both parts carry MSL 2A (4 Weeks) moisture sensitivity classification. Identical moisture control, storage temperature (−20°C to +25°C), and humidity conditions (≤60% RH) apply to both components.

Q: Can the substitute be used in applications requiring specific efficiency ratings?

A: The substitute operates at 112 lm/W compared to the main part's 118 lm/W. Applications with strict efficiency specifications must account for this 5% difference. Both values remain within the high-efficiency range for cool white 2835 LEDs.

Q: Are there any export or regulatory differences between the two parts?

A: No. Both parts carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, and both are RoHS Compliant. No additional export documentation or regulatory review is required for substitution.