LTST-C170KEKT

Overview

The LTST-C170KEKT is a surface-mount device (SMD) LED manufactured by Lite-On Technology. It belongs to the family of compact, high-efficiency light sources designed for modern electronic applications. As a typical SMD LED, it offers advantages over traditional through-hole LEDs including smaller footprint, better thermal management, and suitability for automated assembly processes. This component is commonly used in applications requiring reliable visual indicators or low-power illumination. Its standardized packaging (likely 0603 or similar) ensures compatibility with industry-standard PCB layouts and pick-and-place machines. The LTST-C170KEKT represents the continuing trend toward miniaturization in electronic components while maintaining or improving optical performance.

Structure and Working Principle

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The LTST-C170KEKT follows standard SMD LED construction, comprising a semiconductor die mounted on a lead frame and encapsulated in a molded plastic package. The die material composition determines the emitted color, typically using gallium arsenide (GaAs) or gallium phosphide (GaP) based compounds for visible light emission. When forward voltage is applied across the anode and cathode, electrons and holes recombine in the semiconductor junction, releasing energy as photons. The package includes a molded lens that shapes the light output pattern, with the specific geometry determining the viewing angle characteristics. Internal reflectors may be incorporated to enhance light extraction efficiency from the semiconductor material.

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Key Features

The LTST-C170KEKT offers several notable characteristics that make it suitable for industrial and consumer applications. Its high brightness output, typically measured in millicandelas (mcd), ensures visibility even in well-lit environments. The component maintains stable performance across a wide operating temperature range, often from -40°C to +85°C or higher. Energy efficiency is another key advantage, with forward currents commonly in the 20mA range while delivering substantial light output. The SMD package provides excellent thermal performance, allowing heat to dissipate through the PCB traces. Additionally, the LED exhibits fast response times (in nanoseconds) and long operational lifespans, often rated for 50,000 hours or more of continuous use under proper conditions.

Application Areas

This SMD LED finds use across diverse industries due to its reliability and compact form factor. In consumer electronics, it serves as status indicators on devices like routers, TVs, and appliances. The automotive sector utilizes similar components for dashboard lighting, switch backlighting, and exterior signal applications (when properly qualified). Industrial applications include control panel indicators, machinery status lights, and equipment displays. Medical devices often incorporate such LEDs for user interface elements where reliability is critical. The LTST-C170KEKT's specific wavelength (color) determines its suitability for particular applications—for instance, red LEDs for night vision preservation or green for high-visibility indicators.

Maintenance and Precautions

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Proper handling and installation are crucial for maximizing the LTST-C170KEKT's performance and lifespan. During PCB assembly, recommended soldering profiles must be followed to prevent thermal damage—typically with peak temperatures not exceeding 260°C for a few seconds. Moisture sensitivity may require baking prior to reflow in humid environments. In circuit design, current-limiting resistors are essential to prevent overdriving the LED. The component should be protected from electrostatic discharge (ESD) during handling. Long-term operation at maximum ratings may reduce lifespan, so derating (operating below maximum specifications) is recommended for critical applications. When cleaning assembled boards, use methods compatible with the LED's packaging materials.

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B2B Procurement Guide

When sourcing the LTST-C170KEKT in bulk, several factors should be considered. Verify the manufacturer's part number matches exactly, as similar-looking components may have different specifications. Minimum order quantities (MOQs) typically apply, often starting at several thousand pieces for standard pricing. Lead times vary by supplier and market conditions—established distributors may offer faster availability than direct manufacturer orders. Packaging options (tape-and-reel, cut tape, or loose) should match your assembly process requirements. For quality assurance, request certificates of conformance and consider ordering samples for testing before large purchases. Pricing tiers become significantly more favorable at higher volumes, with 10,000+ unit orders commonly seeing 30-50% reductions compared to small-quantity pricing.