SPMWH1228FD5WAPKS4 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAPKS4 is a Samsung Semiconductor LM281B cool white LED in 2835 metric package (1113 case). This surface mount LED operates at 6500K color temperature with 80 CRI and delivers 67 lumens at 150mA test current. The part is classified as "Not For New Designs," indicating end-of-life status. Equivalent and substitute parts are necessary to support ongoing production requirements and ensure design continuity for existing applications.

Substiute Parts

SPMWH1228FD5WAPKS4

Samsung Semiconductor, Inc.In Stock: 1100SPMWH1228FD5WAPKS4 Datasheet

Current PartRFQ

SPMWH1228FD5WAPKSE

Samsung Semiconductor, Inc.In Stock: 1118SPMWH1228FD5WAPKSE Datasheet

DirectRFQ

SPMWH3228FD5WAP0SG

Samsung Semiconductor, Inc.In Stock: 801SPMWH3228FD5WAP0SG Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAPKSG

Samsung Semiconductor, Inc.In Stock: 1004SPMWH3228FD5WAPKSG Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAPMSG

Samsung Semiconductor, Inc.In Stock: 938SPMWH3228FD5WAPMSG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAPKS4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Color and CCT: White, Cool 6500K (fixed requirement)
• Package / Case: 1113 (2835 Metric) (fixed requirement)
• Mounting Type: Surface Mount (fixed requirement)
• Test Current: 150mA (fixed requirement)
• Maximum Current: 160mA (fixed requirement)
• Viewing Angle: 120° (fixed requirement)
• CRI: 80 (fixed requirement)
• Thermal Resistance: 25°C/W (fixed requirement)
• RoHS Compliance: Required
• MSL Rating: 2A (4 Weeks)

Allowable Variations:

• Forward Voltage (Typ): 3.0V to 3.1V
• Flux @ 25°C, 150mA: 65–70 lm range
• Lumens/Watt: 144–149 lm/W range
• Series designation: LM281B, LM281B+, LM281BZ+
• Product Status: Active status preferred over "Not For New Designs"
• Packaging format: Tape & Reel or equivalent

Substitutes are grouped into two categories: Direct manufacturer equivalents (same base product number SPMWH1228) and parametric equivalents (alternative base product number SPMWH3228 with compatible electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Preferred for Immediate Substitution):

SPMWH1228FD5WAPKSE is the primary substitute. This part maintains the same base product number (SPMWH1228) and shares identical electrical and mechanical specifications with the main part. The LM281B+ series represents an active product line with improved luminous efficacy (146 lm/W vs. 144 lm/W). Forward voltage remains at 3.1V, ensuring direct circuit compatibility. Product status is Active, eliminating obsolescence risk. Inventory availability is 1051 units.

Parametric Equivalents (Alternative Substitutes):

SPMWH3228FD5WAP0SG, SPMWH3228FD5WAPKSG, and SPMWH3228FD5WAPMSG are parametric equivalents based on the LM281BZ+ series. These parts operate at 3.0V forward voltage (0.1V lower than the main part) while maintaining identical flux output (67 lm) and superior lumens/watt efficiency (149 lm/W). The 0.1V reduction in forward voltage results in lower power dissipation and improved thermal performance. All three variants are Active products with combined inventory of 2,469 units. These substitutes are suitable for applications where forward voltage tolerance permits the 3.0V operation.

Compliance and Certification:

All substitute parts maintain RoHS compliance and 2A MSL rating (4 Weeks), matching the original part's environmental and handling requirements. ECCN and HTSUS classifications remain consistent across all variants.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAPKSE be used as a direct replacement for SPMWH1228FD5WAPKS4?

A: Yes. SPMWH1228FD5WAPKSE is a direct manufacturer equivalent with identical electrical and mechanical parameters. Both parts operate at 3.1V forward voltage, 150mA test current, and deliver 67 lumens at 6500K. The primary difference is product status: SPMWH1228FD5WAPKSE is Active, while the original is Not For New Designs. No circuit modifications are required.

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

A: The LM281B+ (SPMWH1228FD5WAPKSE) operates at 3.1V forward voltage with 144–146 lm/W efficiency. The LM281BZ+ series (SPMWH3228 base product) operates at 3.0V forward voltage with 149 lm/W efficiency. Both deliver 67 lumens at 150mA test current and share identical package, viewing angle, and CRI specifications. The 0.1V voltage difference results in approximately 3% lower power consumption with the LM281BZ+ variant.

Q: Are the parametric equivalents (SPMWH3228 series) compatible with existing PCB designs?

A: Compatibility depends on circuit design tolerance for forward voltage. The 0.1V reduction (3.1V to 3.0V) is within typical LED driver tolerance ranges but must be verified against specific power supply and current regulation specifications. PCB footprint and thermal management remain identical due to matching 2835 package dimensions and 25°C/W thermal resistance.

Q: What is the inventory status for each substitute?

A: SPMWH1228FD5WAPKSE: 1,051 units. SPMWH3228FD5WAP0SG: 697 units. SPMWH3228FD5WAPKSG: 905 units. SPMWH3228FD5WAPMSG: 867 units. Total parametric equivalent inventory: 2,469 units.

Q: Do all substitute parts meet the same RoHS and MSL requirements?

A: Yes. All substitute parts are RoHS Compliant with MSL rating 2A (4 Weeks), matching the original SPMWH1228FD5WAPKS4 specifications. Storage and handling requirements are identical across all variants.

Q: Which substitute should be selected for new production designs?

A: SPMWH1228FD5WAPKSE is recommended for new designs requiring direct electrical compatibility. For applications where forward voltage tolerance permits 3.0V operation, any of the LM281BZ+ variants (SPMWH3228 series) offer superior efficiency (149 lm/W) and Active product status with larger combined inventory.