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Ni80 MuMETAL® shielding cans are high-permeability, 80% nickel-iron enclosures designed to protect current transformers and sensitive electronics from electromagnetic interference (EMI) and magnetic fields. These cans, often deep-drawn, offer high attenuation, especially in low-intensity fields, and are available in various round or rectangular sizes, with or without lids.
Key Features and Benefits
- High Permeability: Utilizes Ni80 (80% Nickel) permalloy, ensuring high-efficiency shielding against EMI and magnetic crosstalk.
- Protection for Components: Ideal for shielding current sensors, audio transformers, and sensitive printed circuit board (PCB) components.
- Customization: Available as standard deep-drawn cans or custom-fabricated to specific dimensions.
- Material Thickness: Commonly available in thicknesses ranging from 0.014 in to 0.062 in (0.36mm to 1.58mm).
- Application: Ideal for applications where low-intensity magnetic fields need high attenuation.
Available Suppliers
- Magnetic Shield Corporation offers deep-drawn MuMETAL® cans in stock, including round and rectangular shapes.
- Vigortronix Ltd produces MuMetal shielding cans for transformers.
- Hongertech provides Ni80 permalloy shields specifically for current transformers and sensors.
- Botou Hi-Tech specializes in Mu-metal magnetic shielding cans for audio transformers.
Design Considerations
- Saturation: While Ni80 provides maximum permeability, it can saturate in high-intensity magnetic fields. Combining Ni80 with materials like steel can alleviate this.
- Orientation: These are generally non-oriented soft ferromagnetic alloys.
- Dimensions: Available in various sizes, including 100 x 100 mm and 600 x 600 mm, with options for 0.8 mm, 4 mm, or 6 mm thickness.
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Web results
Ni80 Permalloy Shield For Current Transformer ...
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › ni80-permalloy-shield-f...
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › ni80-permalloy-shield-f...
Deep Drawn Mu-metal Shielding Cans are designed for protecting sensitive circuits from unwanted parasitic magnetic fields, they are typically applied in audio ...Read more
Shielding Cases / Boxes / Cans
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › shielding-cases-boxes-ca...
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › shielding-cases-boxes-ca...
Nickel Based Mu Metal Shielding Case · Ni80 Permalloy Shielding Case for Current Transformer · Mu Metal Shielding Box for Inductors.Read more
Deep Drawn MuMETAL® Cans - Now Available In Stock
Magnetic Shield Corporation
https://www.magnetic-shield.com › news › deep-drawn-...
Magnetic Shield Corporation
https://www.magnetic-shield.com › news › deep-drawn-...
Aug 31, 2020 — We offer a wide range of 5-sided magnetic shielding MuMETAL® Cans stamped or formed in either round or rectangular shapes, and deep-drawn up to a 3:1 depth ...Read more
Low Cost Magnetic + Electrical Shielding Enclosure
EEVblog
https://www.eevblog.com › forum › metrology › low-c...
EEVblog
https://www.eevblog.com › forum › metrology › low-c...
Aug 23, 2025 — Planning on creating my own custom magnetic + electrical shielding enclosure to perform more metrology-grade measurements.Read more
MuMetal Cans Archives
Vigortronix Ltd
https://www.vigortronix.com › product-category › cans...
Vigortronix Ltd
https://www.vigortronix.com › product-category › cans...
Vigortronix manufactures and supplies MuMetal magnetic shielding cans for transformers and other sensitive electronic components.Read more
Shielding metal
diyAudio
https://www.diyaudio.com › ... › Home
diyAudio
https://www.diyaudio.com › ... › Home
Jan 5, 2012 — My experience is that thin mu-metal made into a box around a transformer is not terribly effective and not as good as heavier plain steel. Data ...Read more
Mu Metal Can (100% Made in the USA!)
Geistnote
https://geistnote.com › Shop All
Geistnote
https://geistnote.com › Shop All
Dec 15, 2023 — Mu Metal Can used for shielding transformers inside microphones. This will fit transformers like the cinemag, ll1912, gn C36, AMI, etc.Read more
$14.95Out of stock
Mu-Metal Transformer Can-Botou Hi-Tech Electronic Parts Co ...
hi-techhermeticseal.com
https://www.hi-techhermeticseal.com › products_detail
hi-techhermeticseal.com
https://www.hi-techhermeticseal.com › products_detail
Specializing in the production of Mu metal magnetic shielding cans for audio transformer and other audio equipments.Read more
Missing: Ni80 ‎Current
Mu-metal
Wikipedia
https://en.wikipedia.org › wiki › Mu-metal
Wikipedia
https://en.wikipedia.org › wiki › Mu-metal
Mu-metal, or μ-metal, is a soft nickel–iron ferromagnetic alloy with very high permeability, which is used for shielding sensitive electronic equipment ...Read more
Ins and Outs of Magnetic Shielding – Getting You From ...
MuShield
https://www.mushield.com › Updates
MuShield
https://www.mushield.com › Updates
Dec 1, 2017 — Magnetic fields, unlike electric fields, can only be redirected, thus, high permeability magnetic shielding materials such as mu metal, or ...Read more
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