Littelfuse 0239.100MXEP - SLO-BLO GLASS BODY M-PACK .100A AXIAL. 5x20mm time-Lag glass body cartridge fuse designed to JL specification. Features: Designed to UL/CSA/ANCE 248 Standard. Available in cartridge and axial lead format RoHS compliant and lead-free.
Littelfuse

0239.100MXEP

UPC: 079458121209


Documents & Media
BrochureTechnical BulletinSpecification Sheet

Contact for Pricing

Minimum Qty: 1000

Multiplier: 1000

*Contact for lower quantities*

Overview

The Littelfuse 5x20mm 0.1A Axial SLO-BLO Glass Cartridge Fuse (SKU: 0239.100MXEP) is a precision-engineered overcurrent protection solution designed for sensitive electronic circuits where controlled current interruption is critical. Built to meet the stringent UL/CSA/ANCE 248 standards, this RoHS-compliant and lead-free fuse delivers exceptional reliability in industrial, automotive, and consumer electronics applications. Its time-lag characteristic allows temporary current surges—such as inrush currents during startup—while providing robust protection against sustained overloads, preventing damage to delicate components like sensors, microcontrollers, and display modules. Engineered for versatility, the 0239.100MXEP features an axial lead configuration in a compact 5x20mm glass body, enabling straightforward installation in tight PCB layouts or chassis-mounted fuse holders. The glass body design offers visual confirmation of fuse status and superior arc suppression during fault conditions, ensuring safe operation in high-voltage environments. As part of Littelfuse’s globally trusted SLO-BLO series, this fuse is optimized for applications requiring a balance between fast-acting response and tolerance for transient conditions, such as power supplies, telecommunications equipment, and automotive control modules. Key advantages of the Littelfuse 0239.100MXEP include: - **Precision Time-Lag Protection**: Designed to handle temporary overloads without nuisance tripping, ideal for circuits with inductive loads or startup surges. - **Compliance & Environmental Safety**: Fully compliant with UL/CSA/ANCE 248 standards and RoHS regulations, ensuring global market access and reduced environmental impact. - **Durable Glass Body Construction**: The 5x20mm glass cartridge provides excellent thermal and mechanical stability, resisting cracking or degradation in harsh operating conditions. - **Axial Lead Configuration**: Simplifies installation in both through-hole PCB designs and chassis-mounted fuse blocks, reducing assembly time and labor costs. - **Wide Application Range**: Suitable for industrial automation, medical devices, consumer electronics, and automotive systems where reliable, low-current protection is essential. Industries that benefit from the Littelfuse 0239.100MXEP include: - **Industrial Automation**: Protecting control circuits, PLCs, and sensors from overcurrent events in manufacturing environments. - **Automotive Electronics**: Safeguarding sensitive modules in infotainment systems, lighting controls, and powertrain sensors against transient faults. - **Telecommunications**: Ensuring uptime in network infrastructure by preventing damage to routers, switches, and base station components. - **Consumer Electronics**: Providing reliable protection in power adapters, chargers, and small appliances where space and performance are critical. Professionals select Littelfuse for its decades-long reputation as a leader in circuit protection, backed by rigorous testing and global certification. The 0239.100MXEP exemplifies this commitment, offering engineers a trusted solution for applications demanding both performance and compliance. Whether used in high-reliability industrial systems or cost-sensitive consumer products, this fuse delivers consistent protection with minimal maintenance, reducing downtime and warranty claims. For projects requiring UL/CSA/ANCE-certified components with proven field reliability, the Littelfuse 5x20mm SLO-BLO Glass Cartridge Fuse is an industry-standard choice.
  • 0.1A current rating with time-lag protection for temporary surges
  • 5x20mm glass body cartridge with axial leads for easy installation
  • Compliant with UL/CSA/ANCE 248 standards and RoHS regulations
  • Ideal for industrial, automotive, and consumer electronics applications
  • Glass body design ensures visual status confirmation and arc suppression

Specifications

Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Axial Lead
Current Rating
0.1 A
Material
Glass
Mounting Type
Cartridge
Series
SLO-BLO
Size
5x20mm
Special Features
Slo-Blo
Standard
UL/CSA/ANCE 248 Standard
Sub Brand
239 Series
Type
5 x 20 mm UL/CSA Slo-Blo
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.