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 wonderfully distinct, especially given the diverse applications for our exceptional components. This is why we offer unparalleled custom capabilities, enabling us to enhance component performance to unprecedented levels, meet precise design specifications, and effectively address even the most complex assembly, production, and distribution challenges.
Founded in 2014, Dongguan JH Amorphous Co., Ltd. has blossomed into a leading supplier of essential components for the forefront of the electronics industry. Over the past decade, we've accumulated vast experience, refined technical expertise, and honed our production capabilities, establishing ourselves as one of the industry's most formidable contenders.
Guided by the visionary Mr. Hank Chan, with over 18 years of invaluable experience in the amorphous industry, we've cultivated a rich portfolio in OEM and ODM services, proudly serving more than 200 prestigious clients, including industry giants like Huawei, Geli, and Jinquanhua.
As a premier full-service, one-stop amorphous core manufacturer, we offer an extensive suite of services, from coating and slitting to stamping, winding, and annealing, not to mention custom assembly. Our dedicated R&D team provides exceptional technical support, thorough design review, and comprehensive testing from inception to production. They excel in both standard and bespoke fabrications of any volume, ensuring our products align perfectly with customer expectations and performance specifications. Our production prowess is distinguished by advanced automation, boasting 22 winding machines, 5 annealing units, 4 automatic dispensing machines, 5 automatic assembly machines, 10 inductor testers, and a solitary CCD auto-inspection machine. This sophisticated automation not only boosts our yearly production capacity to an impressive 12,000,000 units but also ensures meticulous quality checks throughout every stage of production.
In our industry, we shine with our wide array of amorphous and nanocrystalline materials, available in multiple types and thicknesses, ideal for standard core sizes as well as custom tape winding toroidal assemblies. Additionally, we provide a comprehensive selection of top-tier magnetic materials, meticulously crafted to meet diverse transformer assembly requirements. This assures that our solutions are versatile enough to cater to a myriad of applications, all while adhering to stringent dimensional and weight specifications, ideal for audio components, compressors, inverters, conductors, transformers, chokes, and more.
Our passion for quality is unwavering, which is why we adhere strictly to rigorous quality control protocols that are in perfect harmony with ISO9001:2015 and IATF16949 standards. These certifications transcend mere compliance; they underscore our unwavering dedication to safety, environmental sustainability, and unrelenting innovation.
For a decade, we have been at the forefront of enhancing the performance, efficiency, and sustainability of amorphous cores. We remain relentlessly committed to staying ahead of the curve, continually advancing our capabilities.



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 |