LED LM281A SPMWHT228FD5BAT0S0 Equivalent & Substitute Parts

Part Overview

The SPMWHT228FD5BAT0S0 is a Samsung Semiconductor LED lighting component from the LM281A series, featuring neutral white 4000K color temperature in a 2835 surface mount package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The LM281A series delivers 61 lumens at 150mA forward current with a 120° viewing angle, suitable for general illumination applications requiring neutral white output.

Substiute Parts

SPMWHT228FD5BAT0S0

Samsung Semiconductor, Inc.In Stock: 1163SPMWHT228FD5BAT0S0 Datasheet

Current PartRFQ

L128-4080CA3500001

LumiledsIn Stock: 343473L128-4080CA3500001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SPMWHT228FD5BAT0S0 is determined by alignment across the following critical parameters:

Color and Photometric Alignment: Both the main part and substitute maintain 4000K neutral white color temperature with CRI 80, ensuring identical color output characteristics for end-use applications.

Electrical Compatibility: Forward voltage and current ratings must support operation within existing circuit designs. The substitute operates at 3V nominal with 120mA test current, compared to the main part's 3.15V at 150mA. Both fall within acceptable ranges for standard LED driver circuits.

Optical Performance: Viewing angle of 120° is maintained across both parts, preserving beam distribution characteristics in optical assemblies.

Package and Mounting: Both parts use 2835 supplier device package designation with surface mount technology and flat lead configuration, enabling direct PCB footprint compatibility.

Regulatory Compliance: RoHS compliance status is verified for both parts, meeting environmental and material restriction requirements.

Product Status: The substitute part maintains active product status, ensuring ongoing availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: The L128-4080CA3500001 (Lumileds LUXEON 2835) is the qualified equivalent for SPMWHT228FD5BAT0S0 replacement based on the following engineering criteria:

Regulatory Alignment: Both parts meet RoHS compliance requirements. The substitute carries ROHS3 certification, representing current regulatory standards, while the main part holds RoHS Compliant status.

Product Lifecycle Status: The main part is classified as obsolete, creating supply and support discontinuation risk. The substitute maintains active product status with confirmed inventory availability (343,449 units), ensuring procurement continuity and technical support access.

Electrical and Optical Equivalence: Color temperature, CRI, viewing angle, and package designation are identical. Forward voltage differential of 0.15V and test current reduction of 30mA are within acceptable operating margins for standard LED driver circuits. The substitute's lower test current (120mA vs. 150mA) reduces thermal load while maintaining comparable luminous output (58lm vs. 61lm).

Performance Advantages: The substitute demonstrates superior luminous efficacy (161 lm/W vs. 129 lm/W) and lower thermal resistance (21°C/W vs. 24°C/W), providing improved energy efficiency and thermal management in equivalent form factors.

Physical Compatibility: Dimensional variance of 0.18mm in length (3.50mm vs. 3.32mm) remains within standard PCB assembly tolerances for 2835 package footprints. Height and width dimensions are identical.

Frequently Asked Questions (FAQ)

Q: Can the L128-4080CA3500001 be used as a direct replacement without circuit modification?

A: Yes, within standard LED driver circuit tolerances. The 0.15V forward voltage difference and 30mA lower test current are accommodated by typical constant-current LED drivers. Verify driver current setting capability at 120mA minimum. Physical footprint compatibility is confirmed for 2835 package designations.

Q: What is the significance of the 0.18mm length difference between parts?

A: The dimensional variance (3.50mm vs. 3.32mm) falls within standard PCB assembly tolerances for 2835 package components. Both parts use identical 2.80mm width and 0.75mm height, ensuring compatibility with existing solder pads and optical assemblies designed for 2835 form factors.

Q: Why does the substitute have higher maximum current rating (240mA vs. 150mA)?

A: The L128-4080CA3500001 is rated for operation up to 240mA maximum, while the test current is specified at 120mA. This provides design margin for applications requiring higher brightness. The main part's 150mA maximum current is a design constraint of the LM281A series. Circuit design should maintain operation within the substitute's recommended test current range for optimal performance and lifespan.

Q: Are there moisture sensitivity differences between these parts?

A: Yes. The main part carries MSL 2A (4 Weeks), while the substitute is rated MSL 3 (168 Hours). MSL 3 allows extended floor life before reflow soldering. Both ratings are standard for surface mount LEDs and require appropriate moisture control during storage and assembly.

Q: How does the improved thermal resistance of the substitute affect system design?

A: The substitute's lower thermal resistance (21°C/W vs. 24°C/W) reduces junction temperature rise under identical power dissipation. This provides thermal margin in applications with limited heat sinking or elevated ambient temperatures, potentially extending component lifespan and improving reliability.

Q: Is the REACH compliance status relevant for this substitution?

A: The substitute is listed as REACH Unaffected, indicating no REACH substance of concern restrictions. This status supports use in regulated markets. Verify REACH compliance requirements for your specific application jurisdiction.