The AVX (KYOCERA AVX) F0805B0R25FWTR is a surface-mount circuit protection fuse designed for board-level overcurrent protection in electronic systems. This compact component belongs to the Accu-Guard II series and serves as a critical safety element in preventing damage from excessive current flow in sensitive electronic circuits.
This fast-blow fuse addresses the design challenge of providing reliable overcurrent protection in space-constrained applications where traditional through-hole fuses are impractical. The 0805 package size (2012 metric) measures just 0.083" x 0.050" x 0.035" (2.10mm x 1.27mm x 0.90mm), making it ideal for high-density PCB layouts where board real estate is at a premium. The surface-mount configuration eliminates the need for drilling holes in the PCB, simplifying manufacturing processes and reducing assembly costs.
The fuse operates with a current rating of 250mA and can handle DC voltages up to 63V, with a DC cold resistance of 0.75 ohms. Its fast-blow response time ensures rapid disconnection when overcurrent conditions occur, protecting downstream components from damage. The device demonstrates robust performance across a wide temperature range from -55°C to 125°C, making it suitable for both commercial and industrial applications. With a breaking capacity of 50A at rated voltage and a melting integral (I²t) of 3E-05, it provides predictable and reliable protection characteristics.
The primary advantages include its miniature footprint enabling dense PCB layouts, excellent thermal stability across extreme temperature ranges, fast response to overcurrent conditions, and compliance with cUL and UL safety standards. The tape and reel packaging facilitates automated pick-and-place assembly processes, improving manufacturing efficiency and reducing handling costs.
This fuse is compatible with standard SMT assembly processes and can be integrated into various electronic systems requiring precise overcurrent protection. It's particularly well-suited for applications in consumer electronics, telecommunications equipment, automotive electronics, industrial control systems, portable devices, power management circuits, and battery protection systems where space constraints and reliability are critical factors.
Regarding equivalent models, several manufacturers offer comparable 0805 surface-mount fuses with similar specifications. Littelfuse provides the 0805L series with models like 0805L025WR and 0805L025SLYR offering similar current ratings and package sizes. Bel Fuse offers the 0ZCJ series including 0ZCJ0025AF2A with comparable electrical characteristics. Bourns manufactures the SF-0805 series such as SF-0805F025M-2 with equivalent functionality. Schurter provides the UMT series including UMT 250 with similar specifications. Eaton/Bussmann offers the SMD series with models like SMD0805-025 providing comparable protection levels. When selecting alternatives, it's essential to verify that voltage ratings, current ratings, response times, breaking capacity, and physical dimensions match the specific application requirements, as subtle differences in these parameters can significantly impact circuit protection effectiveness and overall system reliability.
F0805B0R25FWTR (1)
F0805B0R25FWTR Key Technical Attributes
Manufacturer: AVX (KYOCERA AVX)
Manufacturer Part Number: F0805B0R25FWTR
Current Rating: 250mA
F0805B0R25FWTR Packing Size
This fuse is provided in an 0805 (2012 Metric) surface mount package, meeting industry standards for compact circuit protection. The tape & reel (TR) format is ideal for automated assembly processes, ensuring efficient and safe handling during production. Its physical dimensions are 0.083 inch in length, 0.050 inch in width, and 0.035 inch in height (2.10mm x 1.27mm x 0.90mm). The fuse is a board-mount type, designed for reliable installation onto printed circuit boards. Thermal characteristics include an operating temperature range of -55°C to 125°C, providing stable protection in both high and low-temperature environments. Pin configuration is specific to surface mount design, supporting robust electrical contact. Electrical properties include a DC cold resistance of 0.75 ohms, fast-blow response time, and a breaking capacity of up to 50A at the rated voltage.
F0805B0R25FWTR Application
The AVX F0805B0R25FWTR surface mount fuse is ideally suited for use in portable electronics, telecommunication devices, industrial controls, consumer electronics, and other compact circuitry requiring low-profile overcurrent protection. Its fast-blow characteristic makes it particularly efficient in safeguarding sensitive components from rapid overcurrent or short-circuit conditions.
F0805B0R25FWTR Features
This fuse offers a range of advanced features:
- Designed using ACCU-GUARD II technology for precise, reliable circuit protection
- Board mount integration excluding cartridge style, maximizing space efficiency
- Rated for 63VDC, allowing use in moderate voltage applications
- Capable of handling up to 50A of breaking capacity at full rated voltage, ensuring robust protection against fault currents
- Fast-acting response time minimizes the risk of damage to sensitive components
- Low melting I²t value (3E-05), further safeguarding against excessive thermal and electrical stress
- Tape & reel packaging allows for high-speed, automated placement
- UL/cUL agency approved, supporting regulatory compliance in global markets
- Stable operation across a wide temperature span, making it suitable for environments with fluctuating climates
- Surface mount configuration offers enhanced mechanical stability and minimizes parasitic effects in high-frequency applications
- Compact 0805 footprint reduces board space requirements and supports densely packed, miniaturized designs
F0805B0R25FWTR Quality and Safety Features
This fuse is fully recognized by major safety agencies, including UL and cUL, underscoring its proven reliability and adherence to stringent quality control standards. The fast-blow profile offers critical protection for circuits that cannot tolerate prolonged fault currents. Although it is RoHS non-compliant, it is manufactured following AVX’s high-quality protocols for longevity and durability. Each unit undergoes extensive quality assurance to guarantee consistency and performance over its life cycle.
F0805B0R25FWTR Compatibility
The F0805B0R25FWTR is broadly compatible with all 0805 (2012 metric) solder pads and is engineered for seamless integration in surface mount assembly lines. It is an ideal drop-in replacement for existing 0805 SMD fuses rated at 250mA, 63VDC, and meets standard PCB design practices for both commercial and industrial electronic products.
F0805B0R25FWTR Datasheet PDF
For comprehensive details regarding electrical characteristics, mechanical drawings, recommended soldering profiles, and test reports, our website offers the most authoritative datasheet for the AVX F0805B0R25FWTR model. We strongly recommend downloading the latest PDF datasheet directly from this page to ensure you have the most accurate and up-to-date information for your engineering and purchasing decisions.
Quality Distributor
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