SML-LX1610USBC LED TitanBrite™ Blue 470nm SMD Equivalent & Substitute Parts

Part Overview

The SML-LX1610USBC is a surface-mount LED from Lumex Opto/Components Inc. featuring TitanBrite™ Blue technology with a nominal wavelength of 470nm. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part is housed in a TO-252-3 DPAK package with two leads and a thermal tab, suitable for high-brightness lighting applications requiring blue spectral output.

Substiute Parts

SML-LX1610USBC

Lumex Opto/Components Inc.In Stock: 884SML-LX1610USBC Datasheet

Current PartRFQ

SML-LX1610USBC/A

Lumex Opto/Components Inc.In Stock: 703SML-LX1610USBC/A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SML-LX1610USBC is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Wavelength: 470nm (Typ) — Blue spectral output
• Package Type: TO-252-3, DPAK (2 Leads + Tab), SC-63 — Physical and thermal interface compatibility
• Mounting Type: Surface Mount (SMD) — PCB assembly process compatibility
• Maximum Current Rating: 350mA — Circuit design compatibility
• RoHS3 Compliance — Regulatory requirement
• Moisture Sensitivity Level: 2 (1 Year) — Storage and handling requirements

Allowable Parameter Variations: Substitute parts may exhibit improved electrical performance (higher luminous flux, improved efficiency, lower forward voltage) while maintaining identical package geometry and current ratings. Forward voltage may vary within the typical operating range for blue LEDs (3.0V to 3.5V). Viewing angle may differ based on optical design improvements.

The identified substitute SML-LX1610USBC/A maintains full compatibility with the original part's mechanical interface and electrical ratings while offering enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SML-LX1610USBC/A

The SML-LX1610USBC/A is the direct substitute for the obsolete SML-LX1610USBC. Both parts are manufactured by Lumex Opto/Components Inc. and share identical mechanical packaging (TO-252-3 DPAK, SC-63) and electrical current ratings (350mA maximum).

Compliance and Certification: Both the original and substitute parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and procurement. Moisture sensitivity level remains constant at MSL 2 (1 Year), requiring identical storage and handling protocols.

Performance Characteristics: The substitute part demonstrates improved optical and electrical performance. The forward voltage is reduced from 3.5V to 3.0V, resulting in lower power dissipation in current-limited circuits. Luminous flux output increases from 5lm to 20lm at identical test conditions (350mA, 25°C), and efficiency improves from 4 lm/W to 19 lm/W. The viewing angle expands from 70 degrees to 110 degrees, providing broader light distribution.

Procurement Status: The substitute part is in active production with confirmed inventory availability (686 Pcs New Original In Stock), ensuring reliable long-term supply compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can SML-LX1610USBC/A be used as a direct replacement for SML-LX1610USBC in existing designs?

A: Yes. Both parts share identical package geometry (TO-252-3 DPAK, SC-63), identical lead configuration (2 Leads + Tab), and identical maximum current rating (350mA). PCB footprints and thermal interface requirements are identical. The substitute part operates at a lower forward voltage (3.0V vs. 3.5V), which reduces power dissipation and may improve circuit efficiency.

Q: What are the key differences between these parts?

A: The substitute part (SML-LX1610USBC/A) offers improved performance: lower forward voltage (3.0V vs. 3.5V), higher luminous flux (20lm vs. 5lm), higher efficiency (19 lm/W vs. 4 lm/W), and wider viewing angle (110° vs. 70°). All other electrical and mechanical parameters remain identical.

Q: Are there any circuit design considerations when switching to the substitute part?

A: The lower forward voltage of the substitute part (3.0V vs. 3.5V) may affect current-limiting resistor calculations in series-resistor driven circuits. Designs using constant-current drivers are unaffected. The higher luminous output may require optical design review if brightness is critical to application performance.

Q: Do both parts require identical PCB assembly processes?

A: Yes. Both parts use identical surface-mount packaging (TO-252-3 DPAK, SC-63) with identical physical dimensions (8.50 x 8.50 x 3.30mm maximum height). Reflow soldering profiles, pick-and-place equipment settings, and thermal management approaches remain unchanged.

Q: What is the moisture sensitivity requirement for storage?

A: Both parts are classified as MSL 2 (1 Year), requiring storage in controlled humidity environments (typically ≤60% RH at 25°C) with a shelf life of one year from the date of manufacture. Desiccant packaging and dry storage conditions are required.

Q: Are both parts RoHS compliant?

A: Yes. Both SML-LX1610USBC and SML-LX1610USBC/A are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for use in restricted substance directives across EU and international markets.

Q: Why is the original part marked as obsolete?

A: The SML-LX1610USBC has been superseded by the improved SML-LX1610USBC/A variant. The substitute part offers superior performance characteristics (higher efficiency, greater luminous output, wider viewing angle) while maintaining full mechanical and electrical compatibility. Lumex Opto/Components Inc. has transitioned production to the active substitute part.