LTST-020TGKT Equivalent & Substitute Parts

Part Overview

The LTST-020TGKT is an active green LED indication component manufactured by Lite-On Inc., designed for surface mount right-angle applications. This 2-SMD, no-lead package device operates at 3.3V forward voltage with a dominant wavelength of 528nm and delivers 495mcd luminous intensity. The component is ROHS3 compliant and maintains active product status with 630 units in current inventory. Substitute parts are identified to address application requirements including alternative mounting configurations, package geometries, and electrical specifications while maintaining functional equivalence for green LED indication purposes.

Substiute Parts

LTST-020TGKT

Lite-On Inc.In Stock: 683LTST-020TGKT Datasheet

Current PartRFQ

SML-LX1206GC-TR1

Lumex Opto/Components Inc.In Stock: 10825SML-LX1206GC-TR1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTST-020TGKT is determined by the following critical parameters: color (green), lens transparency (clear), test current (20mA), and compliance certifications (ROHS3, REACH Unaffected). The substitute part SML-LX1206GC-TR1 qualifies as an equivalent based on matching color, lens transparency, test current, and regulatory compliance. Differences in forward voltage (2.2V vs 3.3V), millicandela rating (10mcd vs 495mcd), wavelength specifications, mounting configuration (standard surface mount vs right angle), and package geometry (1206 vs 2-SMD no lead) represent design trade-offs that must be evaluated within specific application constraints. The substitute maintains functional green LED indication capability with identical test current and compliance profile.

Parameter Comparison

Engineering Selection Recommendations

Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection. The LTST-020TGKT is recommended for applications requiring right-angle mounting geometry, lower profile height (0.60mm maximum), and higher luminous intensity (495mcd). The SML-LX1206GC-TR1 is suitable for standard surface mount applications where the 1206 package footprint is available, lower forward voltage operation (2.2V) is advantageous for power budget optimization, and the increased viewing angle (125° vs 110°) provides broader light distribution. Forward voltage differential (3.3V vs 2.2V) requires circuit design verification to ensure proper current limiting and LED operation within specified parameters. Package geometry and mounting type differences necessitate PCB layout redesign for physical substitution.

Frequently Asked Questions (FAQ)

Q: Can SML-LX1206GC-TR1 directly replace LTST-020TGKT on existing PCBs?

A: No. The substitute part requires PCB layout modification due to different package types (1206 vs 2-SMD no lead), mounting configuration (standard surface mount vs right angle), and physical dimensions. Footprint redesign is necessary.

Q: What is the impact of the 1.1V forward voltage difference between these parts?

A: The SML-LX1206GC-TR1 operates at 2.2V versus the LTST-020TGKT at 3.3V. Circuit current limiting resistor values must be recalculated to maintain 20mA test current. Verify power supply voltage compatibility with the lower forward voltage requirement.

Q: Are both parts suitable for the same brightness applications?

A: No. The LTST-020TGKT delivers 495mcd while the SML-LX1206GC-TR1 delivers 10mcd. The substitute part produces significantly lower luminous intensity and is suitable only for applications where reduced brightness is acceptable.

Q: Do wavelength differences affect color perception?

A: Yes. The LTST-020TGKT has a dominant wavelength of 528nm (peak 518nm) while the SML-LX1206GC-TR1 has a peak wavelength of 565nm. Both are green LEDs, but the substitute exhibits a slightly longer wavelength that may appear as a different shade of green under identical viewing conditions.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both components carry MSL rating 3 (168 hours), indicating identical moisture handling and storage requirements.