LED Module SI-B8VZ91B2CUS Equivalent & Substitute Parts

Part Overview

The SI-B8VZ91B2CUS is a Samsung Semiconductor LED Module classified as an obsolete product. This linear light strip module operates at 3000K color temperature with warm white output, designed for LED lighting applications requiring high luminous flux output. The module delivers 14428 lm (nominal) at 2.24A test current with a forward voltage of 48.8V and efficiency of 132 lm/W.

Due to its obsolete product status, sourcing original inventory becomes increasingly difficult. Identifying qualified substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this module.

Substiute Parts

SI-B8VZ91B2CUS

Samsung Semiconductor, Inc.In Stock: 1249SI-B8VZ91B2CUS Datasheet

Current PartRFQ

SI-B8V923B20WW

Samsung Semiconductor, Inc.In Stock: 903SI-B8V923B20WW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SI-B8VZ91B2CUS is evaluated based on the following critical parameters that determine functional and mechanical compatibility:

Color Temperature & CRI: Both the main part and substitute must operate at 3000K with CRI of 80 to maintain consistent warm white light output and color rendering characteristics in the application.

Configuration & Form Factor: The linear light strip configuration with flat lens type must be preserved. Physical dimensions (length, width, height) are primary constraints for mechanical fit within existing fixtures and assemblies.

Electrical Parameters: Forward voltage (Vf), test current, and maximum current ratings must be compatible with existing power supply and driver circuitry. Significant deviations require circuit redesign.

Luminous Flux & Efficiency: Output brightness (lumens) and luminous efficacy (lm/W) determine whether the substitute meets application lighting requirements without additional optical or thermal modifications.

Product Status & Availability: Active product status ensures ongoing supply chain access and manufacturing continuity, addressing the primary limitation of the obsolete main part.

Compliance & Certifications: ECCN and HTSUS classifications must align to maintain regulatory and trade compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution: SI-B8V923B20WW is the qualified substitute for SI-B8VZ91B2CUS based on the following engineering criteria:

Product Status Alignment: The substitute SI-B8V923B20WW carries Active product status, ensuring continued manufacturing availability and supply chain stability. This directly addresses the obsolescence limitation of the main part.

Optical & Thermal Compatibility: Both modules maintain identical color temperature (3000K) and color rendering index (80), ensuring consistent light quality in applications. Test temperature conditions are identical at 65°C.

Electrical Parameter Considerations: The substitute operates at lower forward voltage (45V vs. 48.8V) and lower test current (2.02A vs. 2.24A). Existing power supply and driver circuits designed for the main part will require evaluation to confirm compatibility with these reduced electrical demands. The substitute's maximum current rating (2.02A) is lower than the main part (3.24A), indicating a narrower operational envelope.

Luminous Output & Efficiency: The substitute delivers higher luminous flux (15140 lm vs. 14428 lm) and superior efficiency (167 lm/W vs. 132 lm/W), providing enhanced lighting performance without increased power consumption.

Mechanical Fit Constraints: The substitute is 80 mm shorter in length (1120 mm vs. 1200 mm) and 1.80 mm lower in height (3.70 mm vs. 5.50 mm). Mechanical integration requires confirmation that fixture and assembly designs accommodate these dimensional changes.

Regulatory Compliance: Both modules share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, maintaining export and trade compliance requirements.

Selection Decision: SI-B8V923B20WW is suitable as a substitute when electrical circuit compatibility is confirmed and mechanical dimensions are accommodated within the application design. The improved efficiency and higher luminous output represent performance advantages over the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Why is SI-B8VZ91B2CUS classified as obsolete?

A: Product obsolescence is determined by the manufacturer based on production discontinuation and end-of-life decisions. Obsolete status indicates that new manufacturing has ceased and existing inventory is limited. The substitute SI-B8V923B20WW represents the manufacturer's current generation replacement within the same product family.

Q: Can SI-B8V923B20WW be used as a direct drop-in replacement?

A: SI-B8V923B20WW is functionally compatible for optical and thermal performance. However, direct drop-in compatibility depends on three factors: (1) electrical circuit compatibility with the lower forward voltage and current ratings, (2) mechanical fit within the fixture given the 80 mm length reduction and 1.80 mm height reduction, and (3) confirmation that the application does not require the higher maximum current rating of the original part.

Q: What are the key differences in electrical performance?

A: The substitute operates at 45V forward voltage compared to 48.8V for the main part (7.8% reduction). Test current is 2.02A versus 2.24A (9.8% reduction). Maximum current rating is 2.02A for the substitute versus 3.24A for the main part. These differences require circuit evaluation to ensure the power supply and driver can operate within the substitute's electrical specifications.

Q: Does the substitute provide equivalent brightness?

A: The substitute delivers 15140 lm compared to 14428 lm for the main part, representing a 4.9% increase in luminous flux. Efficiency improves from 132 lm/W to 167 lm/W (26.5% gain). The substitute provides higher brightness output at lower power consumption.

Q: Are the color characteristics identical?

A: Yes. Both modules operate at 3000K color temperature with CRI of 80, ensuring identical warm white light output and color rendering performance in the application.

Q: What mechanical considerations apply to substitution?

A: The substitute is 80 mm shorter in length and 1.80 mm lower in height. Fixture and assembly designs must accommodate these dimensional reductions. Width remains identical at 39.80 mm. The substitute specifies a 118° viewing angle, whereas the main part does not specify this parameter.

Q: Are packaging and compliance classifications the same?

A: Yes. Both modules use Tray packaging, share identical ECCN classification (EAR99), and identical HTSUS tariff code (8541.41.0000), maintaining regulatory and trade compliance.

Q: What inventory status should be considered?

A: The main part SI-B8VZ91B2CUS has 1188 pcs in stock as new original inventory. The substitute SI-B8V923B20WW has 875 pcs in stock as new original inventory. Both represent current available inventory; however, the substitute's active product status ensures continued replenishment, whereas the main part's obsolete status indicates no future manufacturing.

Q: Should circuit redesign be anticipated?

A: Circuit evaluation is required due to electrical parameter differences. The lower forward voltage and current ratings of the substitute may allow simplified driver design or reduced power supply requirements. However, applications requiring the higher maximum current capability of the main part (3.24A) cannot use the substitute without design modification.