Littelfuse 274.031 - FUSE 125V FM02A MIL MICRO FUSE .031A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
Littelfuse

274.031

UPC: 079458980264

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Overview

The Littelfuse MICRO™ Fuse, SKU 274.031, represents a pinnacle of miniaturized circuit protection, originally engineered for the demanding requirements of the U.S. Space Program. This fuse delivers exceptional reliability in a remarkably compact form factor, making it an ideal solution for space-constrained electronic designs. Available in both convenient plug-in and versatile radial lead styles, the MICRO™ fuse caters to a broad spectrum of application needs. Its availability spans an extensive ampere range, from an ultra-low 0.002A up to 5A, ensuring precise protection for sensitive electronic components and printed circuit boards. Engineered for superior performance, the Littelfuse MICRO™ fuse boasts a high breaking capacity, providing robust protection against overcurrents and short circuits, thereby safeguarding valuable equipment and preventing potential hazards. For applications where visual confirmation of fuse status is critical, a clear cover option is available, allowing for quick and easy inspection of the fuse element without requiring removal. This feature significantly streamlines troubleshooting and maintenance processes. The military-grade availability of the MICRO™ fuse underscores its robust construction and proven reliability in harsh and critical environments. This makes it a trusted choice for defense, aerospace, and other high-stakes industries where component failure is not an option. The fuse's design prioritizes both safety and longevity, ensuring consistent protection throughout the operational life of the equipment it serves. Key features and benefits include: * **Exceptional Reliability:** Developed for aerospace applications, ensuring dependable performance. * **Compact Design:** Space-saving form factor ideal for dense electronic assemblies. * **Versatile Mounting Options:** Available in plug-in and radial lead styles for flexible integration. * **Wide Ampere Range:** From 0.002A to 5A, offering precise current protection. * **High Breaking Capacity:** Provides robust overcurrent and short-circuit protection. * **Visual Inspection:** Clear cover option for easy fuse element status checks. * **Military Grade Option:** Enhanced durability for demanding applications. Primary applications for the Littelfuse MICRO™ Fuse include printed circuit boards (PCBs), electronic components, and similar sensitive equipment where reliable and compact overcurrent protection is paramount. Its versatility and proven track record make it a go-to component for engineers and designers seeking to ensure the integrity and longevity of their electronic systems. Trust Littelfuse, a global leader in circuit protection, for your critical component needs.
  • Littelfuse MICRO™ Fuse, SKU 274.031, 125V, 0.031A
  • Originally developed for the U.S. Space Program, ensuring high reliability
  • Compact design suitable for space-constrained applications
  • Available in plug-in or radial lead styles for versatile integration
  • High breaking capacity for robust overcurrent protection

Specifications

Amperage Rating
.031 Amps
Application
electronic equipment & appliances
Brand Name
Littelfuse
Connection Type
Plug-in or Radial Lead
Connection Type
Plug-in/Radial Lead
Current Rating
0.031A
Material
Ceramic/Glass
Series
MICRO
Series
MICRO™ FM02A MIL
Size
MICRO
Special Features
High breaking capacity
Sub Brand
274 Series
Type
Plug In
Voltage Rating
125 V
250V PICO FUSE 3A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.

263003L

250V PICO FUSE 3A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.
VERY FAST-ACTING PICO II LEADS .062A. The PICO® II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating.

251.062L

VERY FAST-ACTING PICO II LEADS .062A. The PICO® II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating.
FUSE 125V FM02A MIL MICRO FUSE .015A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.015

FUSE 125V FM02A MIL MICRO FUSE .015A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
FUSE 125V FM02A MIL MICRO FUSE .062A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.062

FUSE 125V FM02A MIL MICRO FUSE .062A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
FUSE 125V PICO II SB TERM ROHS 4A. The PICO® II Slo-Blo® Fuse combines time-delay performance characteristics with the proven reliability of a PICO® Fuse. Features: Enhanced inrush withstand. Small size. Wide range of current ratings (375mA - 7A). RoHS compliant. Wide operating temperature range. Low temperature de-rating.

473004L

FUSE 125V PICO II SB TERM ROHS 4A. The PICO® II Slo-Blo® Fuse combines time-delay performance characteristics with the proven reliability of a PICO® Fuse. Features: Enhanced inrush withstand. Small size. Wide range of current ratings (375mA - 7A). RoHS compliant. Wide operating temperature range. Low temperature de-rating.
FUSE 125V FM02A MIL MICRO FUSE .010A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.010

FUSE 125V FM02A MIL MICRO FUSE .010A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
FUSE 125V FM02A MIL MICRO FUSE .002A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.002

FUSE 125V FM02A MIL MICRO FUSE .002A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
250V PICO FUSE .062A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.

263.062L

250V PICO FUSE .062A. The PICO® II 263 Series Fuse is a specially designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.
250V PICO FUSE BULK M-PACK .062A. The PICO® II 263 Series Fuse is a specifically designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.

0263.062MXL

250V PICO FUSE BULK M-PACK .062A. The PICO® II 263 Series Fuse is a specifically designed axial leaded fuse that achieves a 250V rating in a small package. Features: Very fast-acting. Small size. Wide current rating range (62mA- 15A). RoHS compliant. Halogen-free available. Wide operating temperature range. Low temperature rerating. 250V rating.
FUSE 125V FM02A MIL MICRO FUSE .100A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.100

FUSE 125V FM02A MIL MICRO FUSE .100A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
FUSE 125V FM02A MIL MICRO FUSE .250A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.250

FUSE 125V FM02A MIL MICRO FUSE .250A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.
FUSE 125V FM02A MIL MICRO FUSE .300A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

274.300

FUSE 125V FM02A MIL MICRO FUSE .300A. Developed originally for the U.S. Space Program, MICRO™ fuse provides reliability in a compact design. The MICRO™ fuse is available in plug–in or radial lead styles and a complete range of ampere ratings from 0.002A to 5A to suit a wide variety of design needs. Features: Military grade available. High breaking capacity. Clear cover option to view fuse element status. Available from very low ampere of 0.002A to 5A. Plug-in with short or long leads option. Applications: Printed circuit boards and similar equipment. Electronic components.

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.