LTST-C155JCKT Equivalent & Substitute Parts

Part Overview

The LTST-C155JCKT is an active, surface-mount dual-color LED indicator manufactured by Lite-On Inc. in 1210 (3225 Metric) package format. This component provides independent green and red LED indication with clear lens transparency, designed for discrete LED indication applications. The part is ROHS3 compliant and carries an MSL rating of 3 (168 Hours), making it suitable for standard PCB assembly environments. Substitute parts are identified to address inventory availability, lead time requirements, or specific application parameter needs while maintaining functional and mechanical compatibility.

Substiute Parts

LTST-C155JCKT

Lite-On Inc.In Stock: 980LTST-C155JCKT Datasheet

Current PartRFQ

SML-LX1210IGC-TR

Lumex Opto/Components Inc.In Stock: 2960SML-LX1210IGC-TR Datasheet

MFR RecommendedRFQ

SML-LX1210SRSGC-TR

Lumex Opto/Components Inc.In Stock: 12114SML-LX1210SRSGC-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTST-C155JCKT are qualified based on the following electrical and mechanical parameters:

Mechanical Compatibility Requirements:

• Package format: 1210 (3225 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 3.20mm L x 2.70mm W, 1.10mm height maximum
• Lens configuration: Colorless, clear transparency
• Color configuration: Green and Red, independent operation

Electrical Compatibility Parameters:

• Forward voltage (Vf): Green and Red channels within acceptable operating ranges
• Test current: 20mA for both channels
• Wavelength characteristics: Peak wavelengths within standard LED color specifications

Compliance & Certification:

• RoHS3 compliance required
• MSL rating: 3 (168 Hours)
• REACH unaffected status
• Packaging: Tape & Reel format

The identified substitutes (SML-LX1210IGC-TR and SML-LX1210SRSGC-TR) meet all mechanical compatibility requirements and maintain equivalent electrical performance within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full compliance with ROHS3 and REACH requirements. The LTST-C155JCKT and substitute parts SML-LX1210IGC-TR and SML-LX1210SRSGC-TR are functionally equivalent for standard dual-color LED indication applications within the 1210 package format.

Selection between these parts should be based on specific application requirements regarding forward voltage tolerance, luminous intensity requirements, and viewing angle specifications. The main part (LTST-C155JCKT) provides higher millicandela ratings (16mcd green, 25mcd red) compared to the Lumex substitutes. The Lumex parts offer wider viewing angles (160° versus 130°).

Forward voltage differences are minor and within typical LED operating tolerances. The SML-LX1210SRSGC-TR maintains red wavelength peak at 660nm, matching the main part, while SML-LX1210IGC-TR specifies 635nm red peak wavelength.

All parts are suitable for direct PCB assembly using standard surface-mount processes with equivalent moisture sensitivity handling (MSL 3, 168 Hours).

Frequently Asked Questions (FAQ)

Q: Can SML-LX1210IGC-TR and SML-LX1210SRSGC-TR be used interchangeably with LTST-C155JCKT?

A: Both Lumex parts are mechanically and electrically compatible substitutes. They share identical package dimensions (1210), mounting type (surface mount), and compliance certifications. Forward voltage differences are within standard LED operating ranges. Selection depends on application-specific requirements for luminous intensity and wavelength characteristics.

Q: What are the key differences between the two Lumex substitute parts?

A: SML-LX1210SRSGC-TR provides higher red millicandela rating (15mcd versus 10mcd) and maintains red wavelength peak at 660nm, matching the original part. SML-LX1210IGC-TR specifies 635nm red peak wavelength. Both offer identical green specifications and 160° viewing angle.

Q: Are there forward voltage compatibility concerns when substituting?

A: Forward voltage variations are minor. The main part specifies 2.1V green / 1.8V red. Substitutes specify 2.2V green / 2.0V red (SML-LX1210IGC-TR) or 2.2V green / 1.7V red (SML-LX1210SRSGC-TR). These differences are within typical LED operating tolerances and do not require circuit redesign for standard indication applications.

Q: Do all parts meet the same compliance and handling requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 3 (168 Hours). Packaging format is Tape & Reel for all parts, ensuring equivalent handling and assembly process compatibility.

Q: Which substitute part is recommended for applications requiring maximum brightness?

A: The original LTST-C155JCKT provides the highest luminous intensity (16mcd green, 25mcd red). If brightness is critical, the main part is preferred. SML-LX1210SRSGC-TR offers the next highest red intensity (15mcd) among substitutes.

Q: Are there viewing angle differences that affect application suitability?

A: The main part specifies 130° viewing angle. Both Lumex substitutes provide 160° viewing angle, offering wider light distribution. For applications requiring narrow viewing angles, the original part may be preferred. For applications benefiting from wider light distribution, the Lumex parts provide an advantage.