Samsung Semiconductor LH351C SPHWHTL3D50CE4UPPF LED Equivalent & Substitute Parts

Part Overview

The SPHWHTL3D50CE4UPPF is a Samsung Semiconductor LH351C series warm white LED in 3535 metric package (1414 case). This surface mount LED operates at 2.9V forward voltage with 700mA test current, delivering 320 lumens at 85°C and 158 lumens per watt efficiency. The device features a 128° viewing angle and 70 CRI (Color Rendering Index) for warm white lighting applications at 3500K color temperature.

The main part is designated "Not For New Designs" status, making substitute identification critical for ongoing production and new project planning. Equivalent alternatives within the LH351C series maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

SPHWHTL3D50CE4UPPF

Samsung Semiconductor, Inc.In Stock: 1022SPHWHTL3D50CE4UPPF Datasheet

Current PartRFQ

SPHWHTL3D50CE4V0PF

Samsung Semiconductor, Inc.In Stock: 991SPHWHTL3D50CE4V0PF Datasheet

Parametric EquivalentRFQ

SPHWHTL3D50CE4VPPF

Samsung Semiconductor, Inc.In Stock: 1021SPHWHTL3D50CE4VPPF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the LH351C series is determined by strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Matching Parameters:

• Series designation (LH351C)
• Package / Case (1414 / 3535 Metric)
• Forward Voltage (Vf) = 2.9V
• Test Current = 700mA
• Maximum Current = 2A
• Viewing Angle = 128°
• Mounting Type = Surface Mount
• Physical dimensions (3.50mm × 3.50mm, 2.46mm height)
• Thermal Resistance = 3°C/W
• Luminous Flux @ 85°C = 320lm (290–350lm range)
• Lumens per Watt = 158 lm/W
• CRI = 70

Allowable Variation Parameter:

• CCT (Correlated Color Temperature): Substitutes at 3000K are functionally equivalent to the 3500K main part within the warm white category, as both operate identically across all electrical and mechanical specifications.

The two identified substitutes (SPHWHTL3D50CE4V0PF and SPHWHTL3D50CE4VPPF) differ only in CCT rating (3000K vs. 3500K) while maintaining all other parameters. Both substitutes carry Active product status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using SPHWHTL3D50CE4UPPF:

The main part carries "Not For New Designs" status, indicating Samsung has transitioned this product. Both substitute parts (SPHWHTL3D50CE4V0PF and SPHWHTL3D50CE4VPPF) maintain Active product status, ensuring continued manufacturing support and supply chain stability.

Substitution Basis:

All three parts share identical electrical performance (2.9V, 700mA, 320lm @ 85°C, 158 lm/W) and mechanical specifications (3535 package, 128° viewing angle, 3°C/W thermal resistance). The substitutes differ only in CCT specification (3000K vs. 3500K), both within the warm white category. This CCT difference reflects color temperature perception only and does not affect circuit compatibility, thermal performance, or electrical operation.

Compliance Status:

All parts carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The substitute SPHWHTL3D50CE4V0PF includes explicit RoHS Compliant certification. Both substitutes are available in equivalent Tape & Reel packaging with comparable inventory levels (930–971 units).

Selection Criteria:

• Use SPHWHTL3D50CE4V0PF or SPHWHTL3D50CE4VPPF for new designs and production transitions
• Both substitutes provide identical electrical and thermal performance
• CCT selection (3000K vs. 3500K) depends on application lighting requirements, not component compatibility
• All three parts are mechanically and electrically interchangeable within the LH351C series

Frequently Asked Questions (FAQ)

Q: Can SPHWHTL3D50CE4V0PF or SPHWHTL3D50CE4VPPF directly replace SPHWHTL3D50CE4UPPF in existing circuits?

A: Yes. All three parts share identical electrical specifications (2.9V forward voltage, 700mA test current, 2A maximum current) and mechanical dimensions (3535 package, 3.50mm × 3.50mm, 2.46mm height). Circuit compatibility is complete. The only difference is color temperature (3000K vs. 3500K), which affects perceived light color, not electrical operation.

Q: What is the difference between the two substitute parts?

A: SPHWHTL3D50CE4V0PF and SPHWHTL3D50CE4VPPF are functionally identical. Both are 3000K warm white LEDs with Active product status. The part number suffix variation reflects internal Samsung product coding but does not indicate electrical or mechanical differences. Both are suitable substitutes.

Q: Why does the main part have "Not For New Designs" status?

A: This designation indicates Samsung has discontinued active development and recommends using alternative parts for new projects. The substitute parts (SPHWHTL3D50CE4V0PF and SPHWHTL3D50CE4VPPF) carry Active status, ensuring long-term availability and manufacturing support.

Q: Will changing from 3500K to 3000K affect my circuit performance?

A: No. CCT (Correlated Color Temperature) is a photometric property affecting perceived light color only. It does not change electrical characteristics, forward voltage, current requirements, thermal behavior, or any circuit parameter. The substitutes operate identically to the main part electrically.

Q: Are the substitute parts available in the same packaging?

A: Yes. All three parts use Tape & Reel (TR) packaging with identical 3535 metric package specifications. Reel compatibility and handling procedures are identical.

Q: What is the thermal resistance difference between parts?

A: All three parts have identical thermal resistance of 3°C/W. Thermal management design remains unchanged when substituting.

Q: Do the substitute parts have different moisture sensitivity requirements?

A: The main part specifies MSL 2A (4 Weeks). The substitute parts do not list MSL in the provided specifications. Consult Samsung datasheets for complete moisture sensitivity details if this parameter is critical for your storage and handling procedures.

Q: Can I mix the main part and substitute parts in the same production batch?

A: From an electrical and mechanical standpoint, yes. However, the CCT difference (3500K vs. 3000K) creates a visible color variation in the final product. For applications requiring color consistency, use a single part number throughout production.

Q: Which substitute should I choose for new designs?

A: Both SPHWHTL3D50CE4V0PF and SPHWHTL3D50CE4VPPF are equivalent. Selection depends on your supplier's inventory and internal part numbering preferences. Both offer identical performance and Active product status.