Samsung Semiconductor LH351B SPHWH2L3D30GD4RTK3 LED Equivalent & Substitute Parts

Part Overview

The SPHWH2L3D30GD4RTK3 is a Samsung Semiconductor LH351B series cool white LED with 5000K color temperature, designed for surface mount applications in the 3535 metric package format. This component is classified as Active product status, indicating continued availability for new designs. The LED delivers 145 lumens at 85°C operating temperature with a forward voltage of 2.8V at 350mA test current and provides a 120° viewing angle suitable for general illumination applications.

Equivalent and substitute parts become necessary when addressing inventory constraints, supply chain disruptions, or when design revisions require alternative product variants within the same functional family. The substitute parts listed maintain electrical and mechanical compatibility while offering variations in specific performance characteristics such as color rendering index (CRI) ratings.

Substiute Parts

SPHWH2L3D30GD4RTK3

Samsung Semiconductor, Inc.In Stock: 956SPHWH2L3D30GD4RTK3 Datasheet

Current PartRFQ

SPHWH2L3D30CD4RTK3

Samsung Semiconductor, Inc.In Stock: 1747SPHWH2L3D30CD4RTK3 Datasheet

Parametric EquivalentRFQ

SPHWH2L3D30ED4RTK3

Samsung Semiconductor, Inc.In Stock: 874SPHWH2L3D30ED4RTK3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPHWH2L3D30GD4RTK3 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters (No Deviation Allowed):

• Series: LH351B
• Color: White, Cool
• CCT: 5000K
• Voltage - Forward (Vf) Typical: 2.8V
• Current - Test: 350mA
• Current - Maximum: 1.5A
• Viewing Angle: 120°
• Package / Case: 1414 (3535 Metric)
• Size / Dimension: 3.50mm × 3.50mm
• Height - Seated (Maximum): 2.06mm
• Thermal Resistance of Package: 4°C/W
• Mounting Type: Surface Mount
• Packaging: Tape & Reel (TR)

Allowable Variation Parameters:

• CRI (Color Rendering Index): Substitute parts may vary from 70 to 90
• Product Status: Substitute parts may be classified as "Not For New Designs" while the main part is "Active"
• Flux @ 85°C, Test Current: All parts maintain 145lm (130–160lm range)
• Lumens/Watt @ Test Current: All parts maintain 148 lm/W

The two identified substitute parts (SPHWH2L3D30CD4RTK3 and SPHWH2L3D30ED4RTK3) satisfy all mandatory parameters and differ only in CRI rating, making them functionally equivalent for applications where color rendering requirements permit variation.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (SPHWH2L3D30GD4RTK3): This part is designated as Active product status and is the preferred choice for new design implementations. It provides CRI 90 color rendering performance, suitable for applications requiring high color accuracy. Current inventory of 896 units supports production requirements.

Secondary Selection (SPHWH2L3D30ED4RTK3): This substitute part is classified as "Not For New Designs" but remains functionally equivalent with CRI 80 color rendering. Selection is appropriate for design revisions, legacy product support, or when inventory of the primary part is constrained. Higher inventory availability (822 units) may support expedited fulfillment. RoHS compliance and MSL 2A (4 Weeks) rating are documented.

Tertiary Selection (SPHWH2L3D30CD4RTK3): This substitute part is classified as "Not For New Designs" and provides CRI 70 color rendering. Selection is limited to applications where color rendering requirements are less stringent or for legacy product maintenance. Highest inventory availability (1691 units) supports supply continuity. RoHS compliance and MSL 2A (4 Weeks) rating are documented.

All three parts share identical electrical performance (2.8V forward voltage, 350mA test current, 145lm flux output, 148 lm/W efficiency) and mechanical compatibility (3535 metric package, 120° viewing angle, 4°C/W thermal resistance). Selection between parts should be based on color rendering requirements and product lifecycle status alignment with design objectives.

Frequently Asked Questions (FAQ)

Q1: Can SPHWH2L3D30CD4RTK3 or SPHWH2L3D30ED4RTK3 be used as direct replacements for SPHWH2L3D30GD4RTK3 in existing designs?

A: Yes, both substitute parts are electrically and mechanically compatible. All three parts operate at identical forward voltage (2.8V), test current (350mA), maximum current (1.5A), and produce identical luminous flux (145lm at 85°C). The primary difference is color rendering index (CRI): the main part provides CRI 90, while substitutes provide CRI 80 and CRI 70 respectively. Substitution is valid when application requirements permit lower CRI performance.

Q2: What is the significance of "Not For New Designs" product status on the substitute parts?

A: "Not For New Designs" indicates that Samsung Semiconductor has designated these parts for legacy or existing product support only. While they remain functionally equivalent and available in inventory, new design implementations should prioritize the Active-status SPHWH2L3D30GD4RTK3. This classification does not affect electrical or mechanical performance but reflects manufacturer lifecycle management.

Q3: Are there differences in thermal performance between the main part and substitutes?

A: No. All three parts maintain identical thermal resistance of 4°C/W package rating. Thermal management design calculations and PCB layout considerations remain unchanged across all three part numbers.

Q4: Do the substitute parts have different moisture sensitivity or RoHS compliance?

A: The substitute parts (SPHWH2L3D30CD4RTK3 and SPHWH2L3D30ED4RTK3) are documented as RoHS Compliant with Moisture Sensitivity Level (MSL) 2A (4 Weeks). The main part (SPHWH2L3D30GD4RTK3) does not list these certifications in the provided data. Verify RoHS and MSL requirements with your specific application standards before substitution.

Q5: Can these parts be used interchangeably in the same PCB assembly without design modification?

A: Yes. All three parts share identical package dimensions (3535 metric, 3.50mm × 3.50mm footprint, 2.06mm maximum seated height), mounting type (Surface Mount), and packaging format (Tape & Reel). No PCB layout, footprint, or assembly process changes are required for substitution.

Q6: What inventory considerations should guide part selection?

A: Current inventory levels are: SPHWH2L3D30GD4RTK3 (896 units), SPHWH2L3D30ED4RTK3 (822 units), and SPHWH2L3D30CD4RTK3 (1691 units). If supply continuity is critical, SPHWH2L3D30CD4RTK3 offers the highest available stock. However, product status and CRI requirements should take precedence over inventory levels in design decisions.

Q7: Are there any electrical parameter differences that would affect circuit design?

A: No. Forward voltage (2.8V typical), maximum current (1.5A), and luminous efficiency (148 lm/W) are identical across all three parts. Circuit design, current limiting resistor calculations, and power supply specifications remain unchanged regardless of which part is selected.