Littelfuse TLS090MB - 170 VDC TELECOMMUNICATIONS FUSE - SOLDER (MID-BOARD MOUNT)
Littelfuse

TLS090MB

UPC: 079458801415

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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

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Overview

The **Littelfuse TLS090MB 170VDC Telecommunications Fuse** is a high-performance, mid-board mounted fuse designed to deliver reliable overcurrent protection in demanding telecom applications. Engineered for direct solder attachment, this fuse ensures a secure and stable connection, making it ideal for space-constrained telecom equipment where board-level integration is critical. With a **170 VDC rating**, the TLS090MB is specifically tailored for telecommunications infrastructure, including central office switches, base stations, and data center power distribution systems, where consistent performance under high-voltage conditions is non-negotiable. Telecommunications networks operate under strict reliability requirements, where even minor power anomalies can disrupt service and damage sensitive components. The **TLS090MB** addresses this challenge by providing fast-acting overcurrent protection, safeguarding critical telecom equipment from transient surges, short circuits, and sustained overloads. Its **mid-board mounting design** allows for compact integration into PCB assemblies, reducing wiring complexity and improving thermal management—a key consideration in high-density telecom hardware. **Key Features and Benefits:** - **170 VDC Rated Performance**: Designed to handle the high-voltage demands of telecom power systems, ensuring compatibility with 48VDC and 120VDC bus architectures common in modern networks. - **Solder-Mount Mid-Board Installation**: Facilitates direct PCB attachment, eliminating the need for additional mounting hardware and reducing installation time while enhancing mechanical stability. - **High Interrupt Rating**: Engineered to safely interrupt fault currents, preventing catastrophic failures in telecom power distribution circuits. - **Industry-Compliant Design**: Manufactured to meet stringent telecom standards, including UL and IEC certifications, ensuring reliability in global deployments. - **Compact Footprint**: Optimized for space-constrained applications, making it suitable for densely packed telecom equipment where board real estate is at a premium. **Typical Applications:** The **TLS090MB** is widely used in telecommunications infrastructure, including: - **Central Office Switches**: Protecting power distribution circuits in legacy and next-generation switching systems. - **Base Stations**: Safeguarding RF power amplifiers and control circuits in cellular networks. - **Data Center Power Distribution**: Providing branch-level protection in DC power distribution units (PDUs) and rectifier systems. - **Network Interface Devices (NIDs)**: Ensuring reliable operation in outdoor and indoor telecom cabinets. - **5G and Edge Computing Hardware**: Supporting high-reliability power protection in distributed network architectures. **Why Choose Littelfuse for Telecom Protection?** Littelfuse is a global leader in circuit protection solutions, with over a century of innovation in safeguarding critical infrastructure. The **TLS090MB** exemplifies the company’s commitment to quality, reliability, and performance in telecom applications. Professionals in the telecom industry trust Littelfuse fuses for their: - **Proven Track Record**: Decades of supplying protection devices to telecom OEMs and service providers worldwide. - **Rigorous Testing**: Products undergo extensive validation to ensure consistent performance in real-world conditions, including temperature extremes, vibration, and electrical stress. - **Global Support**: Backed by a network of distributors and technical experts to assist with selection, installation, and compliance requirements. - **Sustainability Focus**: Designed for longevity and recyclability, aligning with the telecom industry’s push toward greener infrastructure. **Installation and Selection Considerations:** When integrating the **TLS090MB** into telecom equipment, professionals should consider: - **Voltage and Current Ratings**: Ensure the fuse’s 170VDC rating aligns with the system’s bus voltage and expected fault currents. - **Mounting Environment**: The mid-board design requires careful PCB layout to accommodate thermal dissipation and mechanical stress. - **Agency Approvals**: Verify compliance with regional telecom standards (e.g., UL, IEC, or Telcordia) for deployment in specific markets. - **Replacement and Maintenance**: Littelfuse’s standardized form factor simplifies field replacement, reducing downtime in critical telecom systems. For telecom engineers and procurement teams seeking a **high-reliability, mid-board mounted fuse** for 170VDC applications, the **Littelfuse TLS090MB** delivers unmatched protection, durability, and ease of integration. Trust Littelfuse to safeguard your network’s most critical power paths.
  • 170 VDC rated for telecom power systems
  • Solder-mount mid-board installation for compact integration
  • High interrupt rating for fault current protection
  • UL and IEC certified for global telecom compliance
  • Space-efficient design for high-density PCB assemblies

Specifications

Connection Type
Solder
Mounting Type
Mid-Board
Mounting Type
Mid-Board Mount
Series
TLS
Series
TLS Series
Voltage Rating
170 VDC
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.