SPMWH1228FD5WAQMSC LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD5WAQMSC is a Samsung Semiconductor LM281B+ series surface-mount LED designed for lighting applications. This component operates at 5700K (cool white) with a forward voltage of 3.1V and test current of 150mA, delivering 65 lumens at 25°C. The part is packaged in the 2835 metric form factor (1113 case code) and is currently in active production status.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require alternative color temperature specifications. The LM281B series provides parametric equivalents with compatible electrical and mechanical characteristics suitable for direct replacement in existing designs.

Substiute Parts

SPMWH1228FD5WAQMSC

Samsung Semiconductor, Inc.In Stock: 1132SPMWH1228FD5WAQMSC Datasheet

Current PartRFQ

SPMWH1228FD5WAR0S3

Samsung Semiconductor, Inc.In Stock: 1747SPMWH1228FD5WAR0S3 Datasheet

Parametric EquivalentRFQ

SPMWH1228FD5WARMS3

Samsung Semiconductor, Inc.In Stock: 1098SPMWH1228FD5WARMS3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD5WAQMSC is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Forward voltage (Vf): 3.1V typical
• Test current: 150mA
• Maximum current: 160mA
• Lumens per watt: 140 lm/W

Optical Compatibility:

• Flux output @ 25°C: 65 lumens (63–67 lm range)
• Color Rendering Index (CRI): 80
• Viewing angle: 120°

Mechanical & Package Compatibility:

• Package code: 1113 (2835 Metric)
• Physical dimensions: 3.50mm × 2.80mm
• Height (seated, max): 0.75mm
• Mounting type: Surface Mount
• Thermal resistance: 25°C/W

Compliance & Environmental:

• RoHS compliance status
• Moisture Sensitivity Level (MSL): 2A (4 Weeks)

The substitute parts SPMWH1228FD5WAR0S3 and SPMWH1228FD5WARMS3 maintain identical electrical, optical, and mechanical parameters. The primary difference is color temperature specification (5000K versus 5700K), which does not affect electrical or physical compatibility. Both substitutes are Samsung Semiconductor LM281B series components with the same base product number (SPMWH1228).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status): The SPMWH1228FD5WAQMSC remains the preferred choice for new designs. This part carries active product status from Samsung Semiconductor and maintains full RoHS compliance. The 5700K color temperature specification provides cooler white light output suitable for applications requiring higher correlated color temperature.

Substitute Selection (Legacy/Inventory Constraints): The SPMWH1228FD5WAR0S3 and SPMWH1228FD5WARMS3 are functionally equivalent substitutes for existing designs or when primary part availability is constrained. Both substitutes are designated "Not For New Designs" by Samsung Semiconductor, indicating legacy status. However, they maintain identical electrical performance, optical output, and mechanical compatibility with the main part.

Compliance Considerations:

• SPMWH1228FD5WAQMSC: RoHS Compliant
• SPMWH1228FD5WAR0S3: ROHS3 Compliant
• SPMWH1228FD5WARMS3: RoHS Compliant

All three parts satisfy RoHS requirements. The ROHS3 designation on SPMWH1228FD5WAR0S3 indicates compliance with the most recent RoHS directive revision.

Color Temperature Trade-off: Substitutes operate at 5000K versus the main part's 5700K. This 700K difference results in slightly warmer light output. Applications sensitive to precise color temperature specification should evaluate this parameter against system requirements.

Inventory & Availability:

• SPMWH1228FD5WAQMSC: 1047 pcs in stock
• SPMWH1228FD5WAR0S3: 1732 pcs in stock
• SPMWH1228FD5WARMS3: 1063 pcs in stock

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAR0S3 or SPMWH1228FD5WARMS3 be used as direct replacements for SPMWH1228FD5WAQMSC?

A: Yes. Both substitute parts maintain identical electrical characteristics (3.1V forward voltage, 150mA test current, 160mA maximum current), optical output (65 lumens at 25°C, 140 lm/W efficiency, 80 CRI), and mechanical specifications (2835 metric package, 3.50 × 2.80mm dimensions, 0.75mm height). Direct PCB-level substitution is supported without circuit modification.

Q: What is the difference between the main part and substitute parts?

A: The primary differences are color temperature specification and product status. SPMWH1228FD5WAQMSC operates at 5700K (cooler white), while both substitutes operate at 5000K (slightly warmer white). The main part carries active product status; substitutes are designated "Not For New Designs." All other parameters are identical.

Q: Does the 700K color temperature difference affect electrical compatibility?

A: No. Color temperature is an optical characteristic determined by phosphor composition and does not affect electrical parameters. Forward voltage, current requirements, and power dissipation remain identical across all three parts. Circuit design and PCB layout require no modification.

Q: Are all three parts RoHS compliant?

A: Yes. SPMWH1228FD5WAQMSC and SPMWH1228FD5WARMS3 are RoHS Compliant. SPMWH1228FD5WAR0S3 is ROHS3 Compliant, indicating compliance with the most recent RoHS directive. All parts satisfy RoHS requirements for new designs and production.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts carry MSL 2A (4 Weeks) rating. This indicates the parts must be stored in controlled humidity conditions and have a 4-week floor life after moisture barrier bag opening. Standard moisture control procedures apply to all substitutes.

Q: Can these parts be used interchangeably in existing production?

A: Electrical and mechanical interchangeability is confirmed. However, the "Not For New Designs" status on substitute parts indicates Samsung Semiconductor recommends transitioning to the active SPMWH1228FD5WAQMSC for future production. Existing designs using substitutes may continue operation without modification.

Q: What thermal characteristics should be considered?

A: All three parts specify 25°C/W thermal resistance. This parameter is identical across main and substitute parts. Thermal management design, PCB copper area, and heat sink requirements remain unchanged during substitution.

Q: Are there any packaging differences?

A: No. All three parts use identical Tape & Reel (TR) packaging in the 2835 metric form factor (1113 case code). Reel specifications, tape pitch, and component spacing are consistent across all parts.