SSL-LXA228IC-TR21 Equivalent & Substitute Parts

Part Overview

The SSL-LXA228IC-TR21 is a red LED indication component manufactured by Lumex Opto/Components Inc., designed for surface mount applications with bottom entry configuration. This part features a 2V forward voltage, 60mcd brightness rating, and a clear domed lens with 1.90mm diameter. The component is classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production runs and ongoing support.

Substiute Parts

SSL-LXA228IC-TR21

Lumex Opto/Components Inc.In Stock: 1127SSL-LXA228IC-TR21 Datasheet

Current PartRFQ

SSL-LXA228SIC-TR21

Lumex Opto/Components Inc.In Stock: 706SSL-LXA228SIC-TR21 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SSL-LXA228IC-TR21 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Color: Red
• Mounting Type: Surface Mount, Bottom Entry
• Package / Case: 2-SMD, Yoke Bend
• Lens Style: Round with Domed Top
• Lens Size: 1.90mm Dia
• Physical Dimensions: 2.50mm L x 2.00mm W, 2.90mm Max Height
• Voltage - Forward (Vf): 2V
• RoHS Compliance: ROHS3 Compliant
• MSL Rating: 4 (72 Hours)

Allowable Parameter Variations: Substitute parts may differ in the following parameters while maintaining functional compatibility:

• Millicandela Rating: Higher brightness ratings are acceptable for direct substitution
• Viewing Angle: Wider viewing angles are acceptable for direct substitution
• Wavelength - Peak: Minor wavelength shifts within the red spectrum (630-640nm range) are acceptable
• Product Status: Active status preferred over obsolete
• Packaging Format: Tape & Reel (TR) packaging is acceptable as a substitute for standard packaging

The SSL-LXA228SIC-TR21 qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The SSL-LXA228SIC-TR21 is the qualified substitute for the obsolete SSL-LXA228IC-TR21. Selection of this substitute is based on the following engineering criteria:

Product Status Transition: The main part SSL-LXA228IC-TR21 carries obsolete status, which restricts long-term availability and supply chain reliability. The substitute SSL-LXA228SIC-TR21 maintains active product status with Lumex Opto/Components Inc., ensuring continued manufacturing support and component availability.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and MSL ratings, confirming that the substitute meets all environmental and handling requirements equivalent to the original specification.

Electrical and Mechanical Compatibility: The substitute part maintains identical forward voltage (2V), physical dimensions (2.50mm L x 2.00mm W x 2.90mm Max Height), mounting configuration (Surface Mount, Bottom Entry), and package type (2-SMD, Yoke Bend). These parameters ensure direct PCB compatibility without design modification.

Performance Enhancement: The substitute provides increased brightness (475mcd versus 60mcd) and wider viewing angle (50° versus 25°), which represent performance improvements over the original specification. These enhancements do not compromise compatibility and may provide operational benefits in indication applications.

Wavelength Consistency: The peak wavelength shift from 635nm to 632nm remains within the red spectrum range and maintains visual consistency with the original component.

Frequently Asked Questions (FAQ)

Q: Can SSL-LXA228SIC-TR21 be used as a direct replacement for SSL-LXA228IC-TR21 on existing PCBs?

A: Yes. The substitute part maintains identical physical dimensions, mounting type, electrical voltage specification, and package configuration. No PCB design modifications are required for direct substitution.

Q: What is the significance of the higher millicandela rating (475mcd vs. 60mcd) in the substitute part?

A: The substitute provides increased brightness output. In indication applications, higher brightness is generally acceptable and does not create compatibility issues. Circuit current limiting resistors should be verified to ensure they accommodate the substitute part's brightness characteristics within the application's design parameters.

Q: Does the wider viewing angle (50° vs. 25°) affect compatibility?

A: No. A wider viewing angle represents an expansion of the optical performance envelope. Applications designed for 25° viewing angle will function with the 50° substitute, with the benefit of improved visibility across a broader angular range.

Q: Why is the substitute part packaged in Tape & Reel (TR) format?

A: Tape & Reel packaging is the standard format for high-volume surface mount component distribution. This packaging format is compatible with automated assembly equipment and represents current manufacturing practice for active components.

Q: Are there any handling or storage differences between the main part and substitute?

A: Both parts maintain identical MSL ratings (4, 72 Hours), indicating equivalent moisture sensitivity and storage requirements. Standard ESD precautions and dry storage conditions apply to both components.

Q: What is the wavelength difference between 635nm and 632nm?

A: The 3nm difference falls within normal manufacturing tolerance for red LEDs and is not visually distinguishable in indication applications. Both wavelengths are classified within the red spectrum.

Q: Is the substitute part ROHS3 compliant?

A: Yes. The SSL-LXA228SIC-TR21 maintains ROHS3 compliance identical to the original part, confirming compliance with environmental and hazardous substance restrictions.