SPHWHTL3D50CE4PTQF Equivalent & Substitute Parts

Part Overview

The SPHWHTL3D50CE4PTQF is a Samsung Semiconductor LH351C series LED lighting component in cool white 6500K color temperature. This surface mount LED operates at 2.9V forward voltage with a test current of 700mA, delivering 340lm at 85°C and 167 lm/W efficiency. The component is housed in a 3535 metric package (1414 case) with a 128° viewing angle and is classified as Active product status with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the LH351C series, allowing for design flexibility based on color temperature requirements and inventory availability.

Substiute Parts

SPHWHTL3D50CE4PTQF

Samsung Semiconductor, Inc.In Stock: 825SPHWHTL3D50CE4PTQF Datasheet

Current PartRFQ

SPHWHTL3D50CE4QTQF

Samsung Semiconductor, Inc.In Stock: 7521SPHWHTL3D50CE4QTQF Datasheet

Parametric EquivalentRFQ

SPHWHTL3D50CE4RTQF

Samsung Semiconductor, Inc.In Stock: 3632SPHWHTL3D50CE4RTQF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for SPHWHTL3D50CE4PTQF are qualified based on the following substitution criteria:

Mandatory Matching Parameters:

• Series: LH351C (all substitutes must belong to the same LH351C series)
• Package / Case: 1414 (3535 Metric) (identical physical footprint and mounting interface)
• Mounting Type: Surface Mount (same assembly process compatibility)
• Size / Dimension: 3.50mm × 3.50mm (identical PCB land pattern requirements)
• Height (Seated Max): 2.46mm (identical clearance envelope)
• Test Current: 700mA (same operating point for performance comparison)
• Maximum Current: 2A (identical current handling capability)
• Viewing Angle: 128° (same optical distribution)
• Color Rendering Index (CRI): 70 (same color quality specification)
• Lumens per Watt: 167 lm/W (same efficiency rating)
• Luminous Flux @ 85°C: 340lm (310–370lm range) (same brightness specification)
• Moisture Sensitivity Level (MSL): 2A (4 Weeks) (same handling requirements)
• RoHS Status: ROHS3 Compliant (same environmental compliance)

Allowable Variation Parameters:

• Color Temperature (CCT): 5000K to 6500K (cool white range within LH351C series)
• Forward Voltage (Vf) Typical: 2.9V to 2.92V (within acceptable operating tolerance)
• Thermal Resistance: 3°C/W to 25°C/W (thermal performance variation acceptable for same package)

Parameter Comparison

Engineering Selection Recommendations

All three parts—SPHWHTL3D50CE4PTQF, SPHWHTL3D50CE4QTQF, and SPHWHTL3D50CE4RTQF—maintain Active product status and ROHS3 compliance. Selection between these parts is determined by color temperature requirements and thermal design considerations.

SPHWHTL3D50CE4PTQF (6500K): Select this part when cool white 6500K color temperature is specified. Forward voltage is 2.9V with thermal resistance of 3°C/W, providing superior thermal performance in high-power applications.

SPHWHTL3D50CE4QTQF (5700K): Select this part when intermediate cool white 5700K color temperature is required. Forward voltage is 2.92V with thermal resistance of 25°C/W. Inventory availability is 7482 units.

SPHWHTL3D50CE4RTQF (5000K): Select this part when neutral white 5000K color temperature is specified. Forward voltage is 2.92V with thermal resistance of 25°C/W. Inventory availability is 3539 units.

All three parts share identical electrical performance at test conditions (700mA, 340lm, 167 lm/W), identical mechanical dimensions (3535 metric package), and identical compliance certifications. Forward voltage variation (2.9V to 2.92V) and thermal resistance variation (3°C/W to 25°C/W) fall within acceptable engineering tolerances for the LH351C series.

Frequently Asked Questions (FAQ)

Q: Can SPHWHTL3D50CE4QTQF or SPHWHTL3D50CE4RTQF be used as direct replacements for SPHWHTL3D50CE4PTQF?

A: Yes, both parts are direct substitutes from an electrical and mechanical standpoint. All three parts operate at identical test current (700mA), deliver identical luminous flux (340lm at 85°C), and share the same 3535 metric package footprint. The primary difference is color temperature: 6500K (main part), 5700K (QTQF), and 5000K (RTQF). Selection depends on the color temperature requirement of the application.

Q: What is the impact of the forward voltage difference between 2.9V and 2.92V?

A: The forward voltage variation of 0.02V between SPHWHTL3D50CE4PTQF (2.9V) and the substitute parts (2.92V) is within normal operating tolerance for LED components. This difference does not affect circuit compatibility when proper current-limiting driver circuits are used. Both values are typical specifications and do not indicate performance degradation.

Q: Why do the substitute parts have different thermal resistance values (25°C/W vs. 3°C/W)?

A: Thermal resistance variation within the LH351C series is acceptable for the same package type. The 3°C/W specification for SPHWHTL3D50CE4PTQF and 25°C/W for the substitute parts reflect different thermal design characteristics within the same 3535 metric package. Both values are within the qualified range for this product series. Thermal design should be verified based on the specific application's heat dissipation requirements.

Q: Are all three parts compatible with the same PCB layout and assembly process?

A: Yes. All three parts share identical mechanical specifications: 3535 metric package (1414 case), 3.50mm × 3.50mm footprint, 2.46mm seated height, and surface mount mounting type. PCB land patterns, reflow profiles, and assembly processes are identical across all three parts.

Q: What is the significance of the color temperature range (5000K to 6500K)?

A: Color temperature determines the perceived color of the light output. 6500K (SPHWHTL3D50CE4PTQF) produces daylight-like cool white light. 5700K (SPHWHTL3D50CE4QTQF) produces slightly warmer cool white light. 5000K (SPHWHTL3D50CE4RTQF) produces neutral white light. Selection is based on the application's lighting specification. All three maintain identical CRI (70) and luminous efficiency (167 lm/W).

Q: Are there any compliance or certification differences between the three parts?

A: No. All three parts are ROHS3 compliant, carry identical Moisture Sensitivity Level (2A, 4 Weeks), and share the same ECCN (EAR99) and HTSUS (8541.41.0000) classifications. Compliance and handling requirements are identical.

Q: Can these parts be mixed in the same production batch?

A: From an electrical and mechanical perspective, yes. However, color temperature differences (6500K, 5700K, 5000K) will produce visually distinct light output. If uniform color appearance is required across multiple units, parts must be selected from the same color temperature specification. Mixing different color temperatures in the same application may result in visible color variation.