LED LM281A COOL WHITE 5700K 2835 (SPMWHT228FD5BAQ0S0) - Equivalent & Substitute Parts

Part Overview

The Samsung Semiconductor LM281A is a surface-mount LED lighting component specified for cool white illumination at 5700K color temperature. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The LM281A delivers 62 lumens at 25°C under 150mA test current with a forward voltage of 3.15V and is packaged in a 2-SMD flat lead configuration (2835 package).

Substiute Parts

SPMWHT228FD5BAQ0S0

Samsung Semiconductor, Inc.In Stock: 972SPMWHT228FD5BAQ0S0 Datasheet

Current PartRFQ

L130-5770002011001

LumiledsIn Stock: 854L130-5770002011001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Samsung LM281A is determined by alignment across the following critical parameters:

Color Temperature Match: Both the main part and substitute must operate at 5700K (cool white) to maintain consistent color output in lighting applications.

Luminous Output Range: The substitute must deliver comparable luminous flux within the operational envelope of the original part. The LM281A produces 62 lumens at 150mA test current; substitutes are evaluated for flux output that supports equivalent lighting performance.

Electrical Characteristics: Forward voltage and test current define the electrical operating point. Substitutes must accommodate the same or compatible drive current and voltage ranges to function within existing circuit designs.

Package and Mounting Compatibility: The 2-SMD flat lead package (2835 form factor) establishes the physical footprint and thermal interface. Substitutes must fit the same PCB land pattern and mounting approach.

Regulatory Compliance: RoHS compliance and moisture sensitivity classification ensure substitutes meet the same environmental and handling standards as the original component.

The Lumileds LUXEON 3020 (L130-5770002011001) qualifies as a substitute based on matching color temperature (5700K), comparable luminous output (56 lumens at 120mA), surface-mount configuration, and regulatory compliance, despite differences in package footprint (1208/3020 metric) and electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration – Product Status: The Samsung LM281A is classified as obsolete. The Lumileds LUXEON 3020 (L130-5770002011001) carries active product status, ensuring ongoing availability and manufacturer support for new designs and replenishment orders.

Regulatory Compliance: Both components meet RoHS requirements. The LUXEON 3020 achieves ROHS3 compliance, representing the current regulatory standard. The LM281A meets RoHS compliance, suitable for legacy applications. Selection should align with the target application's regulatory environment.

Moisture Sensitivity: The LM281A specifies MSL 2A (4-week floor life), while the LUXEON 3020 specifies MSL 3 (168-hour floor life). Applications requiring extended storage or humid environments should account for these moisture sensitivity differences during procurement and handling.

Luminous Output and Efficacy: The LUXEON 3020 delivers 56 lumens at 120mA test current compared to the LM281A's 62 lumens at 150mA. The LUXEON 3020 achieves higher luminous efficacy (153 lm/W versus 131 lm/W), indicating superior energy efficiency at its rated current. Circuit designs must accommodate the lower test current of the substitute.

Color Rendering: The LM281A provides CRI 80, while the LUXEON 3020 provides CRI 70. Applications requiring higher color fidelity should evaluate this difference against performance requirements.

Package and Thermal Considerations: The LM281A uses a 2835 package (3.32 × 2.80 mm footprint) with 24°C/W thermal resistance. The LUXEON 3020 uses a 3020 metric package (3.00 × 2.00 mm footprint) with 70°C/W thermal resistance. PCB layout modifications are required for physical fit. The higher thermal resistance of the LUXEON 3020 may require enhanced thermal management in high-power applications.

Frequently Asked Questions (FAQ)

Q: Can the Lumileds LUXEON 3020 directly replace the Samsung LM281A without PCB modifications?

A: No. The LUXEON 3020 uses a 3020 metric package (3.00 × 2.00 mm) while the LM281A uses a 2835 package (3.32 × 2.80 mm). PCB land patterns and mounting footprints differ and require redesign. Additionally, the test current differs (120mA versus 150mA), necessitating circuit adjustments.

Q: What is the impact of the different test currents on circuit design?

A: The LM281A operates at 150mA test current, while the LUXEON 3020 operates at 120mA. Existing driver circuits designed for 150mA must be reconfigured to deliver 120mA to the substitute. Forward voltage differences (3.15V versus 3.05V) also affect voltage drop calculations in series-connected LED strings.

Q: Are there color temperature differences between these parts?

A: Both components are specified at 5700K cool white color temperature. Color temperature matching is confirmed. However, the CRI differs: the LM281A provides CRI 80 while the LUXEON 3020 provides CRI 70. Applications sensitive to color rendering quality should evaluate this specification difference.

Q: What are the thermal management implications of substitution?

A: The LM281A has thermal resistance of 24°C/W; the LUXEON 3020 has 70°C/W. The higher thermal resistance of the substitute requires enhanced PCB thermal design, including increased copper area for heat dissipation. High-current or high-ambient-temperature applications must account for this difference.

Q: Is the LUXEON 3020 suitable for applications requiring extended storage?

A: The LUXEON 3020 specifies MSL 3 (168-hour floor life), compared to the LM281A's MSL 2A (4-week floor life). Applications requiring extended shelf storage or operation in humid environments should verify that the 168-hour moisture sensitivity window aligns with procurement and assembly timelines.

Q: What is the luminous output difference, and does it affect lighting performance?

A: The LM281A produces 62 lumens at 150mA; the LUXEON 3020 produces 56 lumens at 120mA. This represents approximately 10% lower output from the substitute at its rated current. Lighting designs must account for this reduction or increase the number of substitute components to achieve equivalent total luminous output.

Q: Are both components RoHS compliant?

A: Yes. The LM281A is RoHS Compliant. The LUXEON 3020 is ROHS3 Compliant, representing the current regulatory standard. Both meet RoHS requirements for new designs and legacy applications.