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  6. 【BOURNS】Multifuse (PolySwitch) High Voltage * Long Life

【BOURNS】Multifuse (PolySwitch) High Voltage * Long Life

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Multi Fuses

last updated:Sep 26, 2025

セイワ 東京本社、関西支社、名古屋営業所、中国無錫  グループ会社 エレクトロン(長野県松本市)
セイワ 東京本社、関西支社、名古屋営業所、中国無錫  グループ会社 エレクトロン(長野県松本市)
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BOURNS offers a variety of solutions such as "automotive," "medical equipment," "industrial equipment," and "security devices," with multi-fuses that come with a high-quality guarantee and comparable products from other companies!

This is an introduction to BOURNS' multi-fuse products. We have a wide range of equivalent products from competing companies, so please feel free to contact us. The series we handle and their features are as follows: ◎ Series Offered 【Surface Mount Type】 - Model Number (Size) *Hold Current - MF-SM (7555 mm) *0.3–3A - MF-NSMF (3216 mm) *0.12–2A - MF-SM (8763 mm) *1.5–2.5A - MF-MSMF (4532 mm) *0.1–2.6A - MF-SMDF (5050 mm) *0.3–2A - MF-USMF (3225 mm) *0.05–1.75A - MF-PSMF (2010 mm) *0.2–1.1A ◎ Features - Excellent resistance value stability - SMD compact PTC lineup - High voltage type PTC - Long lifespan characteristics - High hold current & low resistance PTC compatible (Uses low resistance conductive materials) - High temperature type SMD PTC suitable for high temperature environments - Compliant with UL, CSA, and TUV - Compliant with RoHS2

    fuse
mfnsmf_part.jpg

【BOURNS】Multifuse (PolySwitch) High Voltage * Long Life

mfnsmf_part.jpg
mfnsmf_part.jpg logo_bourns.png
  • Seiwa Co., Ltd. - BOURNS Introduction Page
  • Special site - Product/service details - https://pr.mono.ipros.com/seiwa-tr/product/

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BOURNS is known as the manufacturer that developed the world's first resistance trimmer (Trimpot). Since its establishment in 1947, it has continued to develop a wide variety of electronic components to meet market needs and has achieved remarkable growth. The company actively engages in strategic acquisitions and invests in innovative new product development. It provides products to a wide range of markets, including telecommunications, computers, industrial equipment, automotive, consumer electronics, medical devices, and audio. In addition to the items listed in the table, we offer a rich array of resistance components to meet various needs. - Thick film chip resistors - Thin film chip resistors - Metal strip chip resistors - High power shunts - Chip resistor arrays - Wirewound resistors - High power resistors - Resistor networks - Thick film resistor networks - Thin film resistor networks - Resistor-capacitor networks - AEC-Q200 compliant automotive resistors - Current sensing resistors - Pulse power resistors - High voltage resistors - Others We also have automotive-compatible products, so please feel free to contact us.

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Applications/Examples of results

- Application - Automobile - Mobile information terminal - Mobile phone, communication equipment - Power supply DC/DC, AC/DC, DC/AC - High voltage equipment - Measuring instrument - Inspection equipment

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【BOURNS】Multifuse

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Bourns Electronic Components Catalog

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Company information

セイワ

セイワ 東京本社、関西支社、名古屋営業所、中国無錫  グループ会社 エレクトロン(長野県松本市)

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The development of electronics has given people great dreams and has turned those dreams into reality, one by one. This development has been passed on to the 21st century, inspiring even greater dreams and hopes. I am deeply grateful and delighted to have been able to engage in work that contributes to this segment of the electronics industry. Moving forward, I will continue to serve as a conduit for the appropriate information on semiconductors and electronic components, so that I can help realize humanity's great dreams and support the product and information development of our clients. I am committed to walking alongside our clients and growing together in the information society of the 21st century. However, on the other hand, global environmental issues have become increasingly prominent. As a member of society, I feel the importance of leaving a rich natural environment for the future and preserving the fundamental value of humanity. I am determined to strive towards becoming a company that harmonizes with nature and society as we move towards an endless future.

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