LED Module SI-B8R52156CUS Equivalent & Substitute Parts

Part Overview

The SI-B8R52156CUS is a Samsung Semiconductor LED Module LT-V564F linear light strip designed for cool white lighting applications at 5000K color temperature. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and new design implementations. The module delivers 7816 lumens at rated conditions with a luminous efficacy of 143 lm/W, suitable for professional lighting installations requiring consistent cool white output.

Substiute Parts

SI-B8R52156CUS

Samsung Semiconductor, Inc.In Stock: 915SI-B8R52156CUS Datasheet

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SI-B8R52256CUS

Samsung Semiconductor, Inc.In Stock: 1775SI-B8R52256CUS Datasheet

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SI-B8R923B20WW

Samsung Semiconductor, Inc.In Stock: 1139SI-B8R923B20WW Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI-B8R52156CUS is determined by the following critical parameters:

Primary Substitution Criteria:

• Color temperature: 5000K (cool white)
• Configuration: Linear light strip
• CRI: 80 minimum
• Base product number: SI-B8 family
• Packaging: Tray
• Compliance: ECCN EAR99, HTSUS 8541.41.0000

Secondary Compatibility Factors:

• Forward voltage tolerance (Vf range)
• Luminous flux output capability
• Current rating compatibility with driver circuits
• Physical dimensions (length, width, height)
• Lens type: Flat

The substitute parts SI-B8R52256CUS and SI-B8R923B20WW share the same base product family (SI-B8), color temperature (5000K), configuration (linear light strip), and CRI rating (80). All three parts are manufactured by Samsung Semiconductor, Inc., and carry identical export and tariff classifications.

Parameter Comparison

Engineering Selection Recommendations

SI-B8R52256CUS (V-Series Gen2): This substitute maintains identical test current (1.12A) and physical dimensions (560 × 39.80 × 5.50 mm) as the main part. Forward voltage is reduced from 48.8V to 46.5V, and luminous flux increases to 8800 lm with improved efficacy (169 lm/W). Maximum current rating is lower at 1.35A. This part is obsolete, limiting long-term availability.

SI-B8R923B20WW (V Gen3): This substitute is the only active product in the series, ensuring ongoing availability and supply chain continuity. It delivers significantly higher luminous flux (16000 lm) and superior efficacy (176 lm/W). However, it operates at higher test current (2.02A), has different physical dimensions (1120 × 39.80 × 3.70 mm), and includes a specified viewing angle of 118°. Forward voltage is further reduced to 45V. Driver circuit redesign may be required due to increased current demand and different voltage characteristics.

For direct replacement in existing installations, SI-B8R52256CUS provides the closest electrical and mechanical compatibility. For new designs prioritizing long-term supply availability, SI-B8R923B20WW is the recommended choice despite requiring circuit adaptation.

Frequently Asked Questions (FAQ)

Q: Can SI-B8R52256CUS be used as a direct drop-in replacement for SI-B8R52156CUS?

A: SI-B8R52256CUS maintains identical test current (1.12A) and physical dimensions, making it mechanically compatible. Forward voltage differs by 2.3V (46.5V vs. 48.8V), which may require minor driver adjustment but remains within typical power supply tolerance ranges for this product category.

Q: What are the key differences between SI-B8R923B20WW and the original part?

A: SI-B8R923B20WW operates at double the test current (2.02A vs. 1.12A), has twice the physical length (1120 mm vs. 560 mm), and delivers double the luminous flux output. Forward voltage is lower at 45V. These differences require driver circuit redesign and mechanical fixture modification.

Q: Why is SI-B8R923B20WW recommended despite its differences?

A: SI-B8R923B20WW is the only active product among the three options, ensuring continued manufacturing and supply availability. Both SI-B8R52156CUS and SI-B8R52256CUS are obsolete, presenting long-term sourcing risk.

Q: Are all three parts compliant with the same export and tariff classifications?

A: Yes. All three parts carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, confirming equivalent regulatory status.

Q: What is the significance of the 5000K color temperature specification?

A: The 5000K specification defines cool white output and is a mandatory matching criterion for substitution. All three parts maintain this specification, ensuring consistent color appearance in lighting installations.

Q: Does CRI rating affect substitution compatibility?

A: Yes. All three parts maintain CRI 80, which is the minimum acceptable standard for this product family. CRI must match or exceed the original specification for color rendering consistency.

Q: What packaging format is used for all three parts?

A: All three parts are supplied in Tray packaging, maintaining identical handling and storage requirements.