281412 Nano Crystalline Magnetic Ring for Renewable Energy Inductor Filter
Benefits of Nanocrystalline Core: | ||||||||||
1. High saturation magnetic induction (Bs) | ||||||||||
2. Low core loss compare to other core materials | ||||||||||
3. Good frequency and temperature characteristics,usable to 3000KHz | ||||||||||
4. Good DC Bias characteristics | ||||||||||
5. Low leakage flux | ||||||||||
6. Size saving and lighter weight compare to others |




Typical Parameter | ||||||||||
Item No. | JH 251610 | |||||||||
Description | Nano Crystalline Magnetic Ring | |||||||||
Density | 7.25g/cm3 | |||||||||
Curie Temperature | Tc =570ºC | |||||||||
Crystallization Temperature | Tx =510ºC | |||||||||
Saturation | Bs= 1.2T | |||||||||
Electrical Resistivity | Ρ=100Ω-cm | |||||||||
Saturation Magnetostriction | λs=2~3 | |||||||||
Item Weight (g) | 22.3 | |||||||||
QTY/CTN (PCS) | 1300 | |||||||||
Carton Size(cm) | 31.5*31*17 | |||||||||
Net Weight / CTN (KGS) | 18 | |||||||||
Gross Weight / CTN (KGS) | 18.8 | |||||||||
Package Optional | Various packages meet your demands | |||||||||
![]() Standard Product list: | ||||||||||
Item No. | Core Dimensions (mm) | Finished Dimensions (mm) | Core Cut Area (mm2) | Ave. magnetic path length (mm) | AL(µH) | |||||
OD | ID | HT | OD | ID | HT | 10KHZ (±30%) | 100KHZ (Min) | |||
JH181308 | 17.5 | 12.6 | 8 | 20.1 | 9.3 | 9.6 | 15.29 | 47.26 | 33 | 4.5 |
JH201208 | 20 | 12 | 8 | 22.5 | 9.8 | 10.1 | 24.32 | 50.24 | 60 | 7 |
JH201210 | 20 | 12 | 10 | 22.15 | 10.2 | 11.6 | 31.2 | 50.24 | 65 | 8 |
JH211510 | 21 | 15 | 10 | 23.9 | 12.8 | 13.2 | 24 | 57 | 25 | 5.25 |
JH221310 | 22 | 13 | 10 | 24.1 | 11.2 | 11.9 | 35.1 | 54.95 | 70 | 9 |
JH251608 | 25 | 16 | 8 | 28 | 13 | 11.5 | 28.08 | 64.37 | 55 | 5.5 |
JH252010 | 25 | 20 | 10 | 27.8 | 17.4 | 12.8 | 19 | 70.65 | 31 | 4 |
JH261610 | 26 | 16 | 10 | 28.8 | 13.7 | 12.8 | 38 | 65.94 | 72 | 9 |
JH281810 | 28 | 18 | 10 | 30.2 | 16.2 | 11.4 | 39 | 72.22 | 60 | 7 |
JH302010 | 30 | 20 | 10 | 32.7 | 17.7 | 12.8 | 38 | 78.5 | 60 | 7 |
JH302015 | 30 | 20 | 15 | 32.05 | 18.05 | 16.7 | 58.5 | 78.5 | 75 | 10 |
JH322008 | 32 | 20 | 8 | 35 | 17.5 | 11.5 | 31.2 | 78.5 | 55 | 6 |
JH322010 | 32 | 20 | 10 | 35 | 17.5 | 13 | 39 | 78.5 | 60 | 7.5 |
JH372415 | 37.8 | 24.2 | 15 | 41 | 21.7 | 17.5 | 79.56 | 97.34 | 85 | 13.5 |
JH383115 | 38 | 31 | 15 | 41.2 | 28 | 17.5 | 40.95 | 108.33 | 70 | 9 |
JH382320 | 38 | 23 | 20 | 41.2 | 20 | 22.5 | 117 | 95.8 | 90 | 14 |
At Dongguan JH, we recognize that each customer's needs are as unique as their applications. Our components serve a wide array of purposes, and to match this diversity, we offer custom-tailored solutions. We are committed to providing custom capabilities that ensure your specific requirements are met with precision. Our expertise allows us to elevate component performance and meet exacting design specifications. We address challenges in assembly, production, and distribution, ensuring seamless integration into your operations.
Established in 2014, Dongguan JH Amorphous Co., Ltd. has swiftly ascended to prominence as a key supplier to the leading-edge electronics industry. Our decade-long journey has been marked by a steadfast acquisition of expertise, technical prowess, and production capabilities, positioning us as a formidable competitor in the field.
Under the sage guidance of Mr. Hank Chan, whose over 18 years in the amorphous industry is invaluable, we have cultivated a robust portfolio in OEM and ODM services. Proudly serving over 200 distinguished clients like Huawei, Geli, and Jinquanhua, we demonstrate excellence in our collaborative endeavors.
As a full-service one-stop shop for amorphous cores, we offer an expansive suite of services-from coating and slitting to stamping and custom assembly. Our dedicated R&D team provides unwavering support, technical reviews, and thorough testing right from the concept stage to production. We cater to both standard and bespoke orders, ensuring performance requirements are not only met but exceeded. With state-of-the-art automation, including 22 winding machines and extensive testing equipment, our annual production peaks at an impressive 12,000,000 units, with quality inspections ingrained in every phase.
We distinguish ourselves with an unparalleled selection of amorphous and nanocrystalline materials, adaptable to any thickness or type, ideal for both standard and custom toroidal assemblages. Our top-tier magnetic materials are designed for diverse transformer assemblies, ensuring our products meet critical dimensional and weight standards for varied applications, from audio components to transformers and beyond.
Our passion for quality drives us to adhere strictly to ISO9001:2015 and IATF16949 standards. These aren't mere certifications of compliance; they are a testament to our unwavering dedication to safety, environmental stewardship, and pioneering innovation.
For a decade, we've been innovation leaders, consistently enhancing the performance, efficiency, and sustainability of amorphous cores. Our commitment to staying at the forefront of industry developments ensures that we remain a pivotal force in advancing core technologies.



Q: Are you trading company or manufacturer ? | |||||||
A: We are an integrated manufacturer of magnetic components, encompassing research and development, production, and sales. We provide customers with one-stop energy-saving, high-efficiency electronic component technology solutions. | |||||||
Q: Can I get samples? | |||||||
A: Samples order testing is supported, which help customers understand the performance and quality of core's products more intuitively. | |||||||
Q:.How long is the sample lead time? | |||||||
A: For ready samples, it's about 2-3 days. If you require your own size, it takes about 7 days. | |||||||
Q: How long is the production lead time? | |||||||
A: Generally it is 5-10 days if the products are in stock. Or 15-30 days if the goods are not in stock, depending on order quantity and production schedule. | |||||||
Q: Which kinds of certificate would you have? | |||||||
A: ISO9001, IATF 16949, RoHs, UL, MSDS and so on. | |||||||
Q: What is your terms of payment ? | |||||||
A: Total amount ≤ USD5000, 100% pay in advance. Total amount > USD5000, 30% T/T in advance ,balance pay off before shipment. The L/C is accept for big order, it can be negotiable. | |||||||
FAQ for Materials | |||||||
Q: What Effect Does Heating The Magnetic Material Have? | |||||||
A: Magnetic materials properties are temperature dependent. When temperature rises the magnetic interaction in the materials reduces due to thermal energy enhancement. When thermal energy overcomes the magnetic energy , magnetic property will reduce drastically or become zero. | |||||||
Q: What is 1K107 Nanocrystalline Alloy material? Where can it be used? | |||||||
A: 1K107 Nanocrystalline Alloy is an industry reference material, with different characteristics than proprietary alloys. When the specification or the application calls for a magnetically soft or high permeability material, 1K107 Nanocrystalline Alloy can frequently be successfully applied. | |||||||
Q: Why must 1K107 Nanocrystalline Alloy be final annealed to develop magnetic shielding performance? | |||||||
A: To obtain optimum magnetic properties, annealing MuMetal® alloy following fabrication is essential. This should be done in a furnace that allows for careful control of the annealing temperature and cooling rate. Optimum properties are reached in a pure hydrogen atmosphere. Q.5. Why does MuMetal or Co-Netic not be used at cryogenic temperature? | |||||||
Q: What are the limitations on using 1K107 Nanocrystalline Alloy material? | |||||||
A: The main limitation of the material is its high core loss at 50 Hz when compared with other soft magnetic materials. | |||||||
Q: Why is coating required for parts made from 1K107 Nanocrystalline Alloy material? | |||||||
A: SiFe materials are more prone to corrosion hence, to avoid corrosion, rusting or oxidation, coating is highly recommended for SiFe materials based components |