LED Module SI-B8R301B2CUS Equivalent & Substitute Parts

Part Overview

The SI-B8R301B2CUS is a Samsung Semiconductor LED Module classified as LT-VB22B Linear Light Strip, designed for cool white lighting applications at 5000K color temperature. This component is currently marked as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement planning. The module delivers 4310 lumens at typical operating conditions with a forward voltage of 25.4V and operates at 1.26A test current.

Substiute Parts

SI-B8R301B2CUS

Samsung Semiconductor, Inc.In Stock: 1600SI-B8R301B2CUS Datasheet

Current PartRFQ

SI-B8R243B20WW

Samsung Semiconductor, Inc.In Stock: 1048SI-B8R243B20WW Datasheet

SimilarRFQ

SI-B8R342B2CUS

Samsung Semiconductor, Inc.In Stock: 1571SI-B8R342B2CUS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI-B8R301B2CUS are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Configuration: Linear Light Strip
• Color: White, Cool
• CCT (Color Temperature): 5000K
• Mechanical Compatibility: Length 1120.00 mm, Width 18.00 mm
• CRI (Color Rendering Index): 80
• Base Product Number: SI-B8 (same platform family)

Secondary Compatibility Parameters:

• Packaging: Tray
• RoHS Compliance Status
• Electrical operating range (forward voltage and current ratings)

Two substitute parts meet these criteria: SI-B8R243B20WW (V Gen3 series, Active status) and SI-B8R342B2CUS (V-Series Gen2, Obsolete status). Both maintain identical physical dimensions, color temperature, CRI rating, and configuration as the main part.

Parameter Comparison

Engineering Selection Recommendations

SI-B8R243B20WW (V Gen3 Series) - Recommended for New Designs

This substitute is classified as Active product status, ensuring continued availability and supply chain stability. The V Gen3 series demonstrates improved efficiency at 187 lm/W compared to the obsolete LT-VB22B at 135 lm/W. Physical dimensions remain identical (1120 mm × 18 mm), and CRI rating matches at 80. The forward voltage increases to 44.4V with reduced test current of 530 mA, requiring driver circuit adjustment. Height reduction to 3.70 mm may provide design flexibility in space-constrained applications. RoHS compliance is maintained.

SI-B8R342B2CUS (V-Series Gen2) - Alternative for Existing Inventory

This substitute shares Obsolete status with the main part but offers higher luminous flux output at 5690 lm (Typ) and improved efficiency at 175 lm/W. Physical dimensions and height (5.50 mm) match the original specification exactly. Forward voltage is 46.4V with maximum current of 900 mA. This option is suitable for applications where existing driver circuits operate in the 46V range or where higher light output is beneficial. Inventory availability is documented at 1513 pieces.

Electrical Circuit Considerations

Both substitutes require driver circuit modifications due to increased forward voltage (44.4V to 46.4V versus 25.4V). Test current specifications differ significantly, necessitating current-limiting adjustments in the power supply design. The SI-B8R243B20WW operates at lower test current (530 mA) while maintaining comparable luminous output, indicating superior LED efficiency in the V Gen3 generation.

Frequently Asked Questions (FAQ)

Q: Can SI-B8R243B20WW directly replace SI-B8R301B2CUS without circuit modifications?

A: No. The forward voltage differs significantly (44.4V versus 25.4V). The driver circuit must be redesigned to accommodate the higher voltage requirement. Direct substitution without electrical adjustment will result in component failure or inadequate operation.

Q: What is the physical compatibility between these parts?

A: All three parts share identical length (1120 mm) and width (18 mm) dimensions, ensuring mechanical fit in existing fixtures. However, SI-B8R243B20WW has reduced height (3.70 mm versus 5.50 mm), which may affect thermal management or optical alignment in some designs.

Q: Why does SI-B8R243B20WW have higher lumens per watt efficiency?

A: The V Gen3 series represents a newer generation of LED module technology with improved phosphor efficiency and thermal management. This is reflected in the 187 lm/W rating compared to 135 lm/W in the obsolete LT-VB22B series.

Q: Is SI-B8R342B2CUS a viable long-term substitute?

A: SI-B8R342B2CUS is classified as Obsolete, similar to the main part. While currently in stock (1513 pieces), this option does not provide long-term supply security. SI-B8R243B20WW (Active status) is recommended for designs requiring sustained component availability.

Q: Do all three parts maintain the same color temperature and CRI?

A: Yes. All parts operate at 5000K color temperature with CRI of 80, ensuring consistent color rendering characteristics across substitution options.

Q: What packaging format is used for these LED modules?

A: All three parts are supplied in Tray packaging, maintaining consistency in handling, storage, and assembly processes.

Q: Are there moisture sensitivity concerns with these substitutes?

A: The main part (SI-B8R301B2CUS) has MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. The substitute parts (SI-B8R243B20WW and SI-B8R342B2CUS) have MSL listed as Not Applicable, indicating equivalent or superior moisture resistance characteristics.