SML-LX2723USBC-TR Equivalent & Substitute Parts

Part Overview

The SML-LX2723USBC-TR is a TitanBrite™ Blue LED (470nm) manufactured by Lumex Opto/Components Inc., designed for surface mount applications in 2-SMD, Gull Wing Exposed Pad configuration. This part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing production and maintenance requirements. The part delivers 9 lumens at 350mA test current with a forward voltage of 3.2V typical and 120° viewing angle.

Substiute Parts

SML-LX2723USBC-TR

Lumex Opto/Components Inc.In Stock: 1094SML-LX2723USBC-TR Datasheet

Current PartRFQ

SML-LX1610USBC/A

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SML-LX2723USBC-TR is determined by the following critical parameters:

Mandatory Matching Criteria:

• Color: Blue
• Wavelength: 470nm (Typ)
• Current - Test: 350mA
• Current - Max: 350mA
• Mounting Type: Surface Mount
• RoHS3 Compliance
• REACH Unaffected Status

Allowable Variation Parameters:

• Voltage - Forward (Vf): ±0.2V tolerance acceptable for circuit design flexibility
• Luminous Flux: Variation permitted within application-specific brightness requirements
• Lumens/Watt: Efficiency differences acceptable if total flux meets circuit specifications
• Viewing Angle: ±10° variation acceptable for most optical applications
• Package / Case: Different SMD configurations acceptable if PCB footprint accommodates
• Physical Dimensions: Height and footprint variations acceptable within assembly constraints
• MSL Rating: Lower MSL rating (higher moisture sensitivity) acceptable with appropriate handling

The substitute part SML-LX1610USBC/A meets all mandatory matching criteria and is classified as Active product status, providing supply continuity for the obsolete SML-LX2723USBC-TR.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SML-LX2723USBC-TR is classified as obsolete. The SML-LX1610USBC/A is classified as active product status, ensuring long-term availability and continued manufacturing support from Lumex Opto/Components Inc.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for electronic component applications. The substitute part carries MSL rating 2 (1 Year), providing superior moisture protection compared to the main part's MSL rating 3 (168 Hours).

Electrical Compatibility: Both parts operate at identical test current (350mA) and maximum current (350mA) with matching wavelength (470nm). The forward voltage difference of 0.2V (3.2V vs 3.0V) is within standard circuit design tolerance and does not preclude direct substitution in most applications.

Optical Performance: The substitute part delivers higher luminous flux (20lm vs 9lm) and superior efficiency (19 lm/W vs 8 lm/W). The viewing angle difference (110° vs 120°) represents a 10° narrower beam, which may require optical design review for applications requiring maximum light distribution.

Mechanical Considerations: The substitute part uses TO-252-3 DPAK package format versus the main part's 2-SMD Gull Wing configuration. Physical dimensions differ: substitute is 8.50 x 8.50mm with 3.30mm height versus 7.00 x 6.00mm with 1.60mm height. PCB footprint redesign is required for mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can SML-LX1610USBC/A directly replace SML-LX2723USBC-TR without circuit modification?

A: Electrical substitution is feasible due to matching current ratings and wavelength. The 0.2V forward voltage difference (3.2V to 3.0V) falls within standard design tolerance. However, mechanical substitution requires PCB footprint redesign due to different package formats and physical dimensions.

Q: What is the impact of the 10° viewing angle difference?

A: The substitute part provides a narrower beam angle (110° vs 120°). This affects light distribution characteristics. Applications requiring maximum light spread across 120° must evaluate whether 110° beam angle meets optical requirements.

Q: Why does the substitute part have higher luminous flux?

A: The SML-LX1610USBC/A delivers 20lm versus 9lm at identical test current. This represents improved LED efficiency in the substitute design. Applications can benefit from higher brightness or reduce current draw while maintaining equivalent light output.

Q: Are there PCB assembly implications for the package change?

A: Yes. The main part uses 2-SMD Gull Wing Exposed Pad (7.00 x 6.00mm, 1.60mm height). The substitute uses TO-252-3 DPAK format (8.50 x 8.50mm, 3.30mm height). PCB layout, solder pad design, and component placement must be redesigned. Reflow profile validation is required.

Q: Does the MSL rating difference affect handling procedures?

A: The substitute part carries MSL rating 2 (1 Year) versus the main part's MSL rating 3 (168 Hours). Lower MSL rating indicates reduced moisture sensitivity, providing more relaxed storage and handling requirements. Standard moisture control procedures remain applicable.

Q: Are both parts currently available for procurement?

A: The main part SML-LX2723USBC-TR is obsolete but currently has 1001 pieces in stock. The substitute SML-LX1610USBC/A is active product status with 686 pieces in stock. For long-term supply assurance, the active substitute is recommended.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8541.41.0000 HTSUS code. Regulatory compliance is maintained across substitution.