Littelfuse LA15QS80-4TI - The Littelfuse LA15QS series semiconductor fuses were designed for the specific protection of diodes and other semiconductor devices rated 150VAC/DC. The LA15QS product lines compact design is perfect for those applications that have limitations on available space.
Littelfuse

LA15QS80-4TI

Alternate Item Number: LA15QS804TI

UPC: 079458155921


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Overview

The Littelfuse LA15QS80-4TI semiconductor fuse (SKU: LA15QS80-4TI) is a high-performance protection component engineered for diodes and other sensitive semiconductor devices operating at 150VAC/DC. Part of the renowned LA15QS series, this fuse combines compact design with robust protection capabilities, making it an ideal solution for space-constrained industrial and electronic systems. Littelfuse, a global leader in circuit protection, delivers this fuse with the precision and reliability professionals demand in mission-critical applications. Semiconductor devices—including diodes, thyristors, and transistors—are highly susceptible to transient overcurrents and short circuits that can cause catastrophic failure. The LA15QS80-4TI addresses this vulnerability by providing fast-acting, high-interrupting capacity protection tailored for 150V systems. Its compact form factor ensures seamless integration into applications where board space is at a premium, such as power supplies, motor drives, renewable energy inverters, and industrial automation equipment. Whether deployed in a high-voltage DC link or an AC distribution network, this fuse delivers consistent performance without compromising safety or efficiency. Selecting the right semiconductor fuse requires careful consideration of voltage rating, interrupting capacity, and physical constraints. The LA15QS80-4TI is rated for 150VAC/DC, making it suitable for both alternating and direct current systems commonly found in industrial environments. Its high interrupting rating ensures reliable operation even under fault conditions, preventing damage to downstream components. The fuse’s low-profile design allows for easy installation in tight enclosures, reducing assembly time and minimizing system footprint. Additionally, Littelfuse’s rigorous testing and quality control processes guarantee long-term reliability, even in harsh operating conditions. Industries that rely on semiconductor protection—such as renewable energy, automotive electronics, telecommunications, and industrial automation—benefit from the LA15QS80-4TI’s versatility. In solar inverters, for example, this fuse safeguards power semiconductor devices from overcurrent events caused by grid fluctuations or shading conditions. In motor control applications, it protects IGBTs and MOSFETs from shoot-through faults, extending the lifespan of critical components. The fuse’s compatibility with standard mounting configurations ensures seamless integration into existing designs, while its UL and CE certifications provide compliance with global safety standards. Professionals trust Littelfuse for circuit protection solutions because of the company’s decades of innovation and expertise. With a portfolio spanning fuses, relays, and surge protection devices, Littelfuse is a preferred partner for engineers and system integrators worldwide. The LA15QS80-4TI exemplifies this commitment, offering a balance of performance, reliability, and compactness that meets the demands of modern industrial applications. Whether you’re designing a new system or retrofitting an existing one, this semiconductor fuse delivers the protection and peace of mind required for long-term operational success.
  • Fast-acting protection for diodes and semiconductor devices at 150VAC/DC
  • Compact design ideal for space-constrained industrial applications
  • High interrupting capacity for reliable fault protection
  • UL and CE certified for global compliance
  • Trusted Littelfuse quality with decades of circuit protection expertise

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Series
LA15QS
Size
Compact
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Voltage Rating
150VAC/DC
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.