SI-B8U342B2CUS Equivalent & Substitute Parts

Part Overview

The SI-B8U342B2CUS is a Samsung Semiconductor LED Module V-Series Gen2 linear light strip designed for white, cool lighting applications at 3500K color temperature. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design and procurement requirements. The module delivers 5440 lumens at typical operating conditions with a forward voltage of 46.4V and operates at 700mA test current.

Due to its obsolete product status, sourcing new inventory of the SI-B8U342B2CUS presents supply chain challenges. Identifying functionally compatible active alternatives ensures design continuity and manufacturing feasibility.

Substiute Parts

SI-B8U342B2CUS

Samsung Semiconductor, Inc.In Stock: 954SI-B8U342B2CUS Datasheet

Current PartRFQ

SI-B8U243B20WW

Samsung Semiconductor, Inc.In Stock: 811SI-B8U243B20WW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI-B8U342B2CUS is determined by alignment across the following critical parameters:

Mandatory Compatibility Parameters:

• Base Product Number: SI-B8 (shared platform)
• Configuration: Linear Light Strip
• CCT (Color Temperature): 3500K
• Lens Type: Flat
• CRI: 80
• ECCN Classification: EAR99
• HTSUS Code: 8541.41.0000

Allowable Variation Parameters:

• Series: V-Series Gen2 to V Gen3 (generational upgrade)
• Product Status: Obsolete to Active (supply availability improvement)
• Packaging: Bulk to Tray (form factor change)
• Color Descriptor: White, Cool to White, Warm (within same CCT specification)
• Luminous Flux: 5440 lm to 4220 lm (performance variation within module class)
• Forward Voltage: 46.4V to 44.4V (within operational tolerance)
• Current Specifications: 700mA test / 900mA max to 530mA test / 1.8A max (different operating envelope)
• Lumens/Watt: 167 lm/W to 180 lm/W (efficiency improvement)
• Height: 5.50mm to 3.70mm (form factor optimization)
• Moisture Sensitivity Level: 1 (Unlimited) to Not Applicable (improved handling)

The SI-B8U243B20WW qualifies as a direct substitute based on shared base platform, identical configuration, matching color temperature, and equivalent optical and electrical performance characteristics within the LED module category.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The SI-B8U243B20WW is a qualified substitute for the SI-B8U342B2CUS based on the following engineering criteria:

Compliance & Regulatory Alignment: Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring equivalent export control and tariff treatment. No regulatory barriers exist to substitution.

Product Status & Supply Chain: The SI-B8U243B20WW holds Active product status with 733 units in stock, compared to the obsolete SI-B8U342B2CUS with limited remaining inventory. This substitution resolves long-term supply continuity.

Platform Compatibility: Both modules are built on the SI-B8 base platform with identical linear light strip configuration, flat lens type, and 3500K color temperature specification. Mechanical dimensions (length and width) are identical at 1120mm × 18mm, supporting direct form-factor compatibility in most applications.

Optical Performance: Both modules maintain CRI of 80, meeting color rendering requirements. The substitute achieves higher luminous efficacy (180 lm/W vs. 167 lm/W), representing a 7.8% efficiency improvement. Luminous flux reduction (4220 lm vs. 5440 lm) reflects the generational design optimization and lower test current (530mA vs. 700mA).

Electrical Operating Envelope: Forward voltage decreases from 46.4V to 44.4V (−2.0V), reducing power supply stress. Maximum current capability increases from 900mA to 1.8A, providing expanded operational flexibility. These changes reflect Gen3 architecture improvements and do not preclude substitution in existing designs with appropriate power supply adjustment.

Physical Form Factor: Height reduction from 5.50mm to 3.70mm (−1.80mm) represents a design optimization that may improve thermal management and mechanical integration in space-constrained applications.

Packaging Consideration: Substitution involves packaging change from Bulk to Tray. This affects handling and storage procedures but does not impact functional performance or electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SI-B8U243B20WW directly replace the SI-B8U342B2CUS in existing designs?

A: Direct mechanical and electrical substitution is supported for applications where the 22.4% reduction in luminous flux (5440 lm to 4220 lm) and 2.0V forward voltage decrease are acceptable. The identical length and width dimensions (1120mm × 18mm) and flat lens type ensure mechanical compatibility. Power supply specifications must be adjusted to accommodate the lower forward voltage (44.4V vs. 46.4V). Applications requiring the original 5440 lm output level require design modification or alternative sourcing.

Q: What is the impact of the height reduction from 5.50mm to 3.70mm?

A: The 1.80mm height reduction in the SI-B8U243B20WW represents a design optimization in the V Gen3 platform. This may improve thermal dissipation and reduce mechanical envelope in space-constrained installations. Mechanical mounting interfaces must be verified for compatibility, as the reduced height may affect optical alignment or thermal contact surfaces in existing fixtures.

Q: Are there differences in color rendering between the two modules?

A: Both modules maintain identical CRI (Color Rendering Index) of 80 and operate at the same 3500K color temperature. Color rendering performance is equivalent. The color descriptor change from "White, Cool" to "White, Warm" reflects marketing terminology variation within the same 3500K specification and does not indicate functional color difference.

Q: How do the electrical operating parameters differ?

A: The SI-B8U243B20WW operates at lower test current (530mA vs. 700mA) and lower typical forward voltage (44.4V vs. 46.4V), resulting in reduced power consumption at nominal operation. Maximum current capability increases to 1.8A, providing greater headroom for peak operation. Power supply designs must be adjusted to the new voltage specification. The substitute achieves higher luminous efficacy (180 lm/W vs. 167 lm/W), indicating improved energy efficiency.

Q: What is the significance of the Moisture Sensitivity Level (MSL) change?

A: The SI-B8U342B2CUS specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The SI-B8U243B20WW lists MSL as Not Applicable, reflecting improved material formulation in the Gen3 design. This change simplifies handling and storage procedures and does not introduce new environmental constraints.

Q: Does the packaging change from Bulk to Tray affect functionality?

A: Packaging format change from Bulk to Tray affects only handling, storage, and logistics procedures. Functional, electrical, and optical performance remain identical. Tray packaging typically provides improved component protection and facilitates automated assembly processes. No design or performance impact results from this packaging variation.

Q: Are both parts subject to the same export controls?

A: Yes. Both the SI-B8U342B2CUS and SI-B8U243B20WW are classified under ECCN EAR99 and HTSUS 8541.41.0000, ensuring identical export control and tariff treatment. No additional compliance considerations arise from substitution.

Q: What is the basis for the luminous flux reduction in the substitute?

A: The 22.4% reduction in luminous flux (5440 lm to 4220 lm) reflects the generational design transition from V-Series Gen2 to V Gen3 architecture. This reduction occurs at lower test current (530mA vs. 700mA), indicating optimized performance at reduced operating point. The substitute achieves higher luminous efficacy (180 lm/W vs. 167 lm/W), demonstrating improved energy conversion efficiency. Applications requiring the original 5440 lm output must evaluate whether the substitute's performance at higher current levels (up to 1.8A maximum) meets requirements.