SML-LX2723SIC-TR LED TitanBrite Red 630nm SMD Equivalent & Substitute Parts

Part Overview

The SML-LX2723SIC-TR is a surface-mount LED from Lumex Opto/Components Inc. featuring TitanBrite™ Red 630nm wavelength technology. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. The part delivers 31 lumens at 350mA test current with a forward voltage of 2V typical and operates across a 120° viewing angle in a compact 2-SMD gull wing exposed pad package measuring 7.00mm × 6.00mm.

Substiute Parts

SML-LX2723SIC-TR

Lumex Opto/Components Inc.In Stock: 892SML-LX2723SIC-TR Datasheet

Current PartRFQ

SML-LX1610SIC/A

Lumex Opto/Components Inc.In Stock: 1026SML-LX1610SIC/A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SML-LX2723SIC-TR are identified based on the following critical parameters that define functional and mechanical compatibility:

Primary Substitution Criteria:

• Manufacturer: Lumex Opto/Components Inc. (same manufacturer maintains design consistency)
• Series: TitanBrite™ (same LED technology platform)
• Color: Red (identical light emission color)
• Wavelength Range: 625nm–630nm (acceptable spectral variation within red LED category)
• Current Rating: 350mA maximum (identical electrical operating point)
• Mounting Type: Surface Mount (same assembly process compatibility)
• Voltage - Forward (Vf): 2.0V–2.1V typical (acceptable forward voltage tolerance)
• RoHS3 Compliance: Required (regulatory requirement match)
• REACH Status: REACH Unaffected (regulatory requirement match)

The substitute part SML-LX1610SIC/A meets these criteria with the following considerations: wavelength shifts from 630nm to 625nm (5nm difference within red spectrum), forward voltage increases from 2.0V to 2.1V (0.1V tolerance), and viewing angle reduces from 120° to 110° (10° reduction). Package format changes from 2-SMD gull wing to TO-252-3 DPAK, requiring PCB layout modification. Physical dimensions increase from 7.00mm × 6.00mm to 8.50mm × 8.50mm with height increasing from 1.60mm to 3.30mm.

Parameter Comparison

Engineering Selection Recommendations

Regulatory Compliance: Both the main part SML-LX2723SIC-TR and substitute SML-LX1610SIC/A maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and hazardous substance regulations for EU and international markets.

Product Status Consideration: The main part is classified as obsolete, making the active production status of SML-LX1610SIC/A a critical advantage for long-term supply chain continuity and future procurement.

Electrical Compatibility: Maximum current rating remains constant at 350mA. Forward voltage increases by 0.1V (2.0V to 2.1V), requiring circuit verification to confirm adequate supply voltage margin. This voltage difference is within typical LED tolerance ranges but must be validated against specific power supply specifications.

Optical Performance: Wavelength shifts from 630nm to 625nm, representing a 5nm reduction within the red spectrum. This shift may produce a perceptibly warmer red tone. Viewing angle narrows from 120° to 110°, reducing light distribution width by 10°. Applications requiring specific wavelength or wide-angle distribution must evaluate this trade-off.

Mechanical Integration: Package format change from 2-SMD gull wing to TO-252-3 DPAK necessitates PCB layout redesign. Footprint increases from 7.00mm × 6.00mm to 8.50mm × 8.50mm, and height increases from 1.60mm to 3.30mm. Space-constrained designs must confirm available board real estate.

Moisture Handling: Moisture sensitivity level improves from MSL 3 (168 hours) to MSL 2A (4 weeks), providing extended shelf life and reduced reflow sensitivity during assembly.

Frequently Asked Questions (FAQ)

Q: Can SML-LX1610SIC/A directly replace SML-LX2723SIC-TR without circuit modification?

A: Direct replacement requires circuit validation. The 0.1V increase in forward voltage (2.0V to 2.1V) must be confirmed against power supply headroom. PCB layout redesign is mandatory due to package format change from 2-SMD gull wing to TO-252-3 DPAK.

Q: What is the impact of the 5nm wavelength shift from 630nm to 625nm?

A: The wavelength reduction from 630nm to 625nm shifts the emitted light toward a warmer red tone within the red spectrum. For applications where specific wavelength is critical (color matching, spectral analysis), this difference must be evaluated. For general red indicator applications, this shift is typically acceptable.

Q: Does the 10° viewing angle reduction from 120° to 110° affect application performance?

A: The viewing angle narrows by 10°, reducing the horizontal and vertical light distribution cone. Applications requiring wide-angle visibility must assess whether 110° provides sufficient coverage. Point-source or directed-light applications may not be affected.

Q: Are there PCB layout considerations for substitution?

A: Yes. The package change from 2-SMD gull wing exposed pad to TO-252-3 DPAK requires complete footprint redesign. Dimensions increase from 7.00mm × 6.00mm to 8.50mm × 8.50mm, and height increases from 1.60mm to 3.30mm. Verify available board space and clearance to adjacent components.

Q: What is the significance of the MSL rating change from 3 to 2A?

A: MSL 3 allows 168 hours of shelf life at specified humidity; MSL 2A allows 4 weeks. The substitute part has improved moisture tolerance, reducing risk of moisture absorption during storage and providing greater flexibility in assembly scheduling.

Q: Are both parts RoHS3 compliant?

A: Yes. Both SML-LX2723SIC-TR and SML-LX1610SIC/A are ROHS3 compliant and REACH unaffected, meeting environmental regulations for restricted hazardous substances.

Q: Why is the main part obsolete?

A: Product status is determined by manufacturer production decisions. The obsolete status of SML-LX2723SIC-TR makes the active production status of SML-LX1610SIC/A essential for ensuring long-term component availability and supply chain stability.

Q: Can I use the same circuit design for both parts?

A: Circuit topology remains compatible, but component values may require adjustment. The forward voltage increase (0.1V) and current characteristics (identical 350mA max) necessitate verification of series resistor values and power supply voltage margins. PCB layout must be redesigned for the different package format.