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{"title":"RH 21*29*15 Rohs ISO9001 NiZn MnZn ferrite material EMI NiZn hot sale sleeve","imgUrl":"https:\/\/img.chinax.com\/nimg\/d6\/96\/24a6212e06e5b58f97db710e0b0c-200x200-1\/rh_21_2a29_2a15_rohs_iso9001_nizn_mnzn_ferrite_material_emi_nizn_hot_sale_sleeve_ferrite_tube_cores_with_free_sample.jpg","attrs":{"Type":"soft","Supplier Type":"factory","Application":"electronic and electrical equipment","Brand":"careful"}}
{"title":"Hot sale RH 16*28*7 Rohs ISO9001 NiZn MnZn ferrite material EMI ring ferrite","imgUrl":"https:\/\/img.chinax.com\/nimg\/18\/f3\/3663a27986227211800003d315bb-200x200-1\/hot_sale_rh_16_2a28_2a7_rohs_iso9001_nizn_mnzn_ferrite_material_emi_ring_ferrite_tube_core_for_coaxial_cables.jpg","attrs":{"Type":"soft","Supplier Type":"factory","Application":"electronic and electrical equipment","Brand":"careful"}}
{"title":"Rohs ISO9001 NiZn material flat cable ferrite core with different size","imgUrl":"https:\/\/img.chinax.com\/nimg\/9b\/b2\/92cc55f515f87472a35bdebf6503-200x200-1\/rohs_iso9001_nizn_material_flat_cable_ferrite_core_with_different_size.jpg","attrs":{"Type":"Soft","Composite":"Ferrite Magnet","Shape":"flat","Application":"Industrial Magnet"}}
{"title":"Advanced technology Rohs ISO9001 nizn multi aperture RID type RF balun ferrite","imgUrl":"https:\/\/img.chinax.com\/nimg\/3a\/a0\/75b86e94a05c0d8b3856a43e0e38-200x200-1\/advanced_technology_rohs_iso9001_nizn_multi_aperture_rid_type_rf_balun_ferrite_core.jpg","attrs":{"Type":"Soft","Composite":"Ferrite Magnet","Shape":"double aperture","Application":"Industrial Magnet"}}
High saturation iron-silicon powder cores designed for EMI suppression and power conversion applications. Fully compliant with RoHS and REACH standards.
Core Construction
Iron-Silicon Powder Cores are high-performance magnetic components manufactured by pressing insulated iron-silicon alloy powder, creating a uniform distributed air gap structure throughout the core.
Technical Specifications
Operating Frequency: 50 kHz to 500 kHz (select grades up to 1 MHz)
Initial Permeability: 26μ to 90μ
Saturation Flux Density: Approximately 1.5 T
Primary Applications
PFC inductors
Output filter chokes
Differential-mode inductors
Buck/boost inductors
Industry Applications
Switch-mode power supplies
Photovoltaic inverters
UPS systems
EV on-board chargers and DC-DC converters
Industrial power supplies
High-power LED drivers
Product Highlights
25+ Years of Expertise: Comprehensive mould library for various SCRC Type Cores with flexible dimensional and material customization
Ready Stock & Fast Dispatch: Well-managed warehouse with basic models in stock for quick order processing
Full Compliance: RoHS, REACH, and ISO 9001 certified for hassle-free export
Customization & Logistics: Flexible customization options and competitive shipping rates for bulk orders
Manufacturer Profile
Hangzhou Careful Electronics Co., Ltd., a subsidiary of Huzhou Careful Magnetism Co., Ltd., specializes in international client development. Established in 2001 as a key enterprise in Huzhou City, the company is recognized as a "High and New Technology Enterprise in Zhejiang Province."
With over 25 years of industry experience and three manufacturing facilities, Careful employs over 1,000 staff including 120 management and technical professionals. The company operates a technological center equipped with international-level automatic magnetic material examination equipment and advanced production lines.
Production Capabilities
Core product lines include EMI Core Series (Ferrite core & Dust core) and Inductance Series, comprising 2 categories with 2,000 specifications. Annual production capacity reaches 6,000 tons of soft ferrite core, establishing Careful as China's largest EMI core production base with annual sales exceeding $100 million USD.
Customization Services
We offer flexible customization options including color, packaging, customer logo, and material composition for larger orders and valued clients.
Production Workflow
Global Presence
Over 60% of products are exported to Southeast Asia, USA, and Europe, serving major clients including AOC, DAWOO, and Haier Electric appliances. The company maintains ISO9001, RoHS, and REACH certifications with a comprehensive quality control system.
Packaging & Shipping
Frequently Asked Questions
Who are we?
Based in Zhejiang, China since 2001, we serve domestic markets (60%) and international clients across Eastern Europe, South Asia, North America, Europe, and other global regions. Our organization employs 280+ professionals.
How can we guarantee quality?
We implement pre-production sampling before mass production and conduct final inspection before shipment to ensure consistent product quality.
What can you buy from us?
Our product portfolio includes Soft Ferrite Core, Amorphous core, Inductors, and NiZn ferrite components.
Why should you buy from us instead of other suppliers?
As China's largest ferrite core manufacturer with over 30 years of experience, we also produce Amorphous core, SMD core, and inductors. Our client portfolio includes Microsoft, GREE, Midea, SAMSUNG, and ASUS.
Careful Magnetism Co., Ltd. is a leading corporation with over 20 years of experience in Ferrite Core manufacturing. Established in 2001 as Huzhou Cifeng Industry Corporation, a key enterprise in Huzhou City, we have been recognized as a "High and New Technology Enterprise in Zhejiang Province.... Careful Magnetism Co., Ltd. is a leading corporation with over 20 years of experience in Ferrite Core manufacturing. Established in 2001 as Huzhou Cifeng Industry Corporation, a key enterprise in Huzhou City, we have been recognized as a "High and New Technology Enterprise in Zhejiang Province....
