SML-LXR44SRSUGC-TR Equivalent & Substitute Parts

Part Overview

The SML-LXR44SRSUGC-TR is a surface mount, right-angle bidirectional LED indicator featuring green and red light emission in a boomerang package configuration. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part delivers 90mcd green and 200mcd red output with a 120° viewing angle in a compact 4.00mm × 3.60mm × 4.00mm form factor.

Substiute Parts

SML-LXR44SRSUGC-TR

Lumex Opto/Components Inc.In Stock: 6415SML-LXR44SRSUGC-TR Datasheet

Current PartRFQ

SML-LXR44SISUGC-TR

Lumex Opto/Components Inc.In Stock: 906SML-LXR44SISUGC-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SML-LXR44SRSUGC-TR is determined by the following critical parameters:

Mechanical Compatibility:

• Package configuration: 2-SMD, Boomerang format
• Mounting type: Surface Mount, Right Angle
• Lens size: 2.40mm diameter
• Overall dimensions: 4.00mm L × 3.60mm W (height variance acceptable within assembly constraints)

Electrical Compatibility:

• Bidirectional configuration with green and red LED elements
• Viewing angle: 120°
• Forward voltage ranges: Green 2.0V–2.1V, Red 1.85V–2.0V
• Test current: 10mA–20mA per color

Regulatory & Environmental:

• RoHS3 compliance required
• REACH unaffected status
• ECCN: EAR99 classification
• HTSUS: 8541.41.0000

The SML-LXR44SISUGC-TR meets these substitution criteria with documented compatibility in the boomerang SMD package family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SML-LXR44SISUGC-TR

The SML-LXR44SISUGC-TR is the designated manufacturer-recommended substitute for the obsolete SML-LXR44SRSUGC-TR. This part maintains active product status with Lumex Opto/Components Inc., ensuring ongoing availability and supply chain continuity.

Compatibility Assessment:

Both parts share identical mechanical specifications within the 2-SMD boomerang package family, with surface mount right-angle mounting and 2.40mm lens diameter. The substitute accommodates the 0.13mm height increase (4.13mm vs. 4.00mm) within standard PCB assembly tolerances for right-angle LED applications.

Electrical Parameter Differences:

The substitute operates at lower test currents (10mA vs. 20mA) with adjusted forward voltages. Green output decreases from 90mcd to 30mcd, while red output increases from 200mcd to 400mcd. These changes reflect different optical design characteristics within the same package envelope. Peak wavelengths remain compatible: green at 574nm (identical), red at 640nm (20nm shift from 660nm).

Regulatory Compliance:

Both parts carry EAR99 ECCN classification and 8541.41.0000 HTSUS code. The substitute's RoHS compliance status is not specified in available documentation; verification against your specific regulatory requirements is necessary prior to design release.

Design Transition Path:

For applications currently using the SML-LXR44SRSUGC-TR, direct substitution with SML-LXR44SISUGC-TR is supported by identical package geometry and bidirectional LED configuration. Circuit design adjustments may be required to accommodate the lower test current specification and modified brightness characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SML-LXR44SISUGC-TR be used as a direct drop-in replacement for the SML-LXR44SRSUGC-TR?

A: Yes, within the constraints of your circuit design. Both parts use identical 2-SMD boomerang packages with surface mount right-angle mounting. The 0.13mm height difference falls within standard PCB assembly tolerances. However, the substitute operates at 10mA test current versus 20mA for the original, and brightness values differ (green: 90mcd to 30mcd; red: 200mcd to 400mcd). Your circuit must accommodate these electrical changes.

Q: What is the primary reason for substitution?

A: The SML-LXR44SRSUGC-TR is classified as obsolete. The SML-LXR44SISUGC-TR is the active equivalent from the same manufacturer, ensuring continued supply availability and manufacturing support.

Q: Are the lens characteristics compatible?

A: Both parts feature 2.40mm diameter clear colorless lenses with 120° viewing angles. The main difference is lens style: the original has a domed top, while the substitute has a flat top. This optical geometry change does not affect package compatibility but may influence light distribution characteristics in your application.

Q: What are the key electrical differences I need to account for in circuit design?

A: Test current reduces from 20mA to 10mA per color. Forward voltages shift slightly: green from 2.1V to 2.0V, red from 1.85V to 2.0V. Red wavelength changes from 660nm to 640nm. These parameters require recalculation of current-limiting resistor values and verification of brightness adequacy for your indicator function.

Q: Are both parts RoHS compliant?

A: The SML-LXR44SRSUGC-TR is confirmed ROHS3 compliant. The SML-LXR44SISUGC-TR's RoHS status is not specified in the provided documentation. Confirm compliance with your supplier or regulatory requirements before design release.

Q: What is the inventory status of each part?

A: The obsolete SML-LXR44SRSUGC-TR has 6,363 pieces in stock. The active substitute SML-LXR44SISUGC-TR has 892 pieces available. For long-term production, the active part ensures ongoing supply chain access.