SPHWHTL3D50EE4QTNF LED Equivalent & Substitute Parts

Part Overview

The SPHWHTL3D50EE4QTNF is a Samsung Semiconductor LH351C series cool white LED in 3535 metric package format. This surface mount LED operates at 2.9V forward voltage with 700mA test current, delivering 300lm flux at 85°C and 148 lm/W efficiency. The component features an 80 CRI rating and 128° viewing angle. The product status is classified as Not For New Designs, necessitating identification of equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

SPHWHTL3D50EE4QTNF

Samsung Semiconductor, Inc.In Stock: 914SPHWHTL3D50EE4QTNF Datasheet

Current PartRFQ

SPHWHTL3D50EE4RTNF

Samsung Semiconductor, Inc.In Stock: 10114SPHWHTL3D50EE4RTNF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPHWHTL3D50EE4QTNF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Series: LH351C
• Package / Case: 1414 (3535 Metric)
• Mounting Type: Surface Mount
• Voltage - Forward (Vf) Typical: 2.9V
• Current - Test: 700mA
• Current - Maximum: 2A
• Viewing Angle: 128°
• Size / Dimension: 3.50mm × 3.50mm
• Height - Seated (Max): 2.46mm
• Thermal Resistance of Package: 3°C/W
• CRI (Color Rendering Index): 80
• Lumens/Watt @ Test Current: 148 lm/W
• Flux @ 85°C, Test Current: 300lm (270–330lm range)

Allowable Variation Parameter:

• CCT (Correlated Color Temperature): Cool white range (5000K–5700K)

The SPHWHTL3D50EE4RTNF qualifies as a parametric equivalent because it maintains all mandatory parameters while varying only the CCT specification from 5700K to 5000K, both within the cool white category.

Parameter Comparison

Engineering Selection Recommendations

Both the SPHWHTL3D50EE4QTNF and SPHWHTL3D50EE4RTNF carry identical product status classification as Not For New Designs. This designation applies to both components equally and does not differentiate their suitability for equivalent applications.

The SPHWHTL3D50EE4RTNF maintains full electrical, thermal, and mechanical compatibility with the SPHWHTL3D50EE4QTNF across all critical performance parameters. The sole distinction is the CCT specification: 5000K versus 5700K. Both values fall within the cool white LED category and share identical luminous efficacy (148 lm/W), flux output (300lm at 85°C), and CRI performance (80).

Selection between these two parts depends on application-specific color temperature requirements. The 5000K variant (SPHWHTL3D50EE4RTNF) provides a slightly warmer cool white appearance compared to the 5700K variant (SPHWHTL3D50EE4QTNF). Both are suitable for direct substitution in applications where cool white illumination is specified, provided the specific CCT requirement is satisfied by the selected part.

Frequently Asked Questions (FAQ)

Q: Can SPHWHTL3D50EE4RTNF replace SPHWHTL3D50EE4QTNF in existing designs?

A: Yes. The SPHWHTL3D50EE4RTNF is a parametric equivalent. All electrical characteristics (forward voltage, test current, maximum current), optical properties (flux, lumens/watt, CRI), thermal performance (thermal resistance), and mechanical specifications (package, dimensions, height) are identical. The only difference is CCT: 5000K versus 5700K. Both are cool white LEDs with equivalent performance.

Q: What is the difference between 5700K and 5000K color temperature?

A: Both are classified as cool white. The 5700K variant (SPHWHTL3D50EE4QTNF) produces a slightly cooler, more bluish-white light. The 5000K variant (SPHWHTL3D50EE4RTNF) produces a slightly warmer cool white light. The difference is perceptually subtle. Selection depends on the specific color temperature requirement of the application.

Q: Are the packages identical?

A: Yes. Both parts use the 1414 (3535 Metric) package with identical dimensions (3.50mm × 3.50mm) and maximum seated height (2.46mm). Both are surface mount components supplied in Tape & Reel packaging. PCB footprints and reflow profiles are identical.

Q: Do both parts have the same thermal characteristics?

A: Yes. Both parts have identical thermal resistance of 3°C/W. Thermal management considerations and heat dissipation requirements are equivalent.

Q: What does "Not For New Designs" mean for both parts?

A: This product status designation indicates that both the SPHWHTL3D50EE4QTNF and SPHWHTL3D50EE4RTNF are legacy components. Samsung Semiconductor does not recommend these parts for new design implementations. However, both remain suitable for maintenance, repair, and continuation of existing production runs where these specific parts are already in use.

Q: Can I use either part interchangeably in my application?

A: Interchangeability depends on your application's color temperature specification. If your design specifies 5700K, use SPHWHTL3D50EE4QTNF. If your design specifies 5000K, use SPHWHTL3D50EE4RTNF. If your application accepts either cool white CCT within the 5000K–5700K range, both parts are functionally equivalent. Verify your application's color temperature tolerance before selection.