Overview

The LTST-C194KGKT from Lite-On Inc. is a discrete surface-mount LED indication device designed for status and signal indication on PCBs. As part of a compact SMD LED family, it is suitable for high-density board layouts where low profile and automated assembly are important. Typical parameters for this class of device include low forward current operation, a defined forward voltage range, and a specific luminous intensity and viewing angle tailored for clear visual indication in consumer, industrial, and communication equipment. The LTST-C194KGKT is commonly used on front panels, keypads, control boards, and signal lines to provide clear visual feedback for power, fault, mode, or communication status.

Applications

• General status indication on consumer electronics (set-top boxes, routers, home appliances)
• Front-panel LEDs in industrial control units and PLC I/O modules
• Signal and activity indicators in networking and telecom equipment
• User interface feedback on instrumentation, test and measurement equipment
• LED indicators in computer peripherals, chargers, and adapters
• Compact indicator lights in automotive or transportation-related electronics (non-safety-critical)

Alternatives & Replacement

Depending on availability, lifecycle status, or required optical/electrical performance, alternative LED indicator parts may be considered. When choosing a substitute, the main parameters to review are package size, color and wavelength, luminous intensity, forward voltage/current, viewing angle, and environmental ratings.

Recommended alternatives:

• Everlight Electronics 19-217/S2C-AQ1R1B/3T – SMD indicator LED, redesign may be required (low compatibility score; manual review recommended).
• Lite-On LTST-C193KGKT-5A – Same manufacturer SMD LED, but package/pin compatibility is not guaranteed; board changes may be needed.
• Lite-On LTST-C190KGKT – Similar Lite-On indicator LED; check mechanical footprint and optical specs.
• Lite-On LTST-C191KGKT – Related family device; verify color, intensity, and pad layout.
• Stanley Electric PY1102W-TR – Alternative from another vendor; likely requires electrical and mechanical redesign.
• Rohm Semiconductor SML-310MTT86 – Compact SMD LED option; confirm brightness, voltage, and footprint.

Engineering note: Before selecting a replacement, carefully compare the datasheets for package dimensions, pad layout, polarity marking, forward voltage/current ratings, luminous intensity, color coordinates, and thermal limits. Even within the same LED family, small differences in footprint or optical performance can require PCB, lens, or resistor value changes to ensure safe operation and consistent visual appearance.