Dongguan Hongheng Electronic Technology Co., Ltd. is an enterprise electronic components company which concentrates on integrating design, development, production, patent invention, technology transfer and marketing. With over 30 years of accumulation, our business spans a wide spectrum, encompassing traditional electronic components such as inductors, transformers, and magnetic ring coils, while actively expanding into cutting-edge fields including new energy storage inductors, network communication transformers, and digital electronic products. The core products focus on high-quality inductors, transformers, and various types of coil-products.

Business scope: Inductors, Transformers, Toroidal Coils, Coil’s Components, New energy applications (energy storage inductors and coils), Electronic Products, Digital Products, Audio, Communication Products, Lighting Energy-saving Electronic Components, Automotive Electronic Components, Household Appliances, General Mechanical Equipment, Sports Equipment, Molds, Metal Products, Plastic Products, and PCBA OEM. There are about 90 employees (including investment cooperation and physical factory equity), and the company and production lines are located in Dongguan, Guangxi, and Hubei.

Our company has throughout adhered to the characteristics of excellent product quality, good cost-effectiveness, short delivery time, and fast response, trying every effort to meet the requirements and expectations from customers to the greatest extent possible.

Introduction to Invention Patent Products, Patent Invention Partners and His Company  Among the numerous products (around 2300 kinds of products logged on the company

website(www.coils-hhd.com), this time we have selected one of them, a patented invention product product (a   series of 17 products) to be introduced, hoping that it will have the opportunity to serve society, make a modest contribution to Chinese Brands and technological innovation.

Invention patent name: Low power loss, high current, wideband shielded magnetic core device suitable for mobile power supplies

Public Patent No.: CN119764016 A

Exclusive Benefit Applicant: Dongguan Hongheng Electronic Technology Co., Ltd

Invention patent holders: He Guogao, Shi Deqi

Application date: December 2024

The patent abstract shows that the present invention relates to the field of magnetic core device technology and discloses a low loss, high current, wideband shielded magnetic core device suitable for mobile power supplies,

comprising a magnetic core device body. The middle of the magnetic core device body is provided with a central     column, and the cross-section of the central column is square and flat. An annular groove is opened between the    magnetic core device body and the central column, and the annular groove is rectangular with circular chamfers at the corners. A rectangular notch is opened between the outer wall of the annular groove and the magnetic core

device body, and the two magnetic core device bodies can be symmetrically assembled into one. In the present     invention, the central pillar set in the middle of the magnetic core device body can wrap the wire, and the wire can be placed through a circular groove, thereby improving the traditional shape of magnetic core devices, which are   mostly circular, E-shaped, or can shaped. These shapes may only have semi closed or three-quarters closed

shielding structures, which limits their shielding effect and may lead to poor anti-interference ability in practical applications.

The patented invention product (electronic component finished products - Shielded high-power inductor (Pin type), HPI1615SF series) has the following performance and characteristics in terms of product application：

• Full magnetic shielded   type designed for the applications of very huge current    (Isat 22~56A, Irms 31~53A)

power inductors with very wide operation frequency,low DCR(0.76~4.3mohm), and mini-size(L*W*H= 16.2* 15.9*14.0).

• Very low power loss ferrite core used, wide operation frequency from 10kHz up to 500kHz.

• 250Vrms, one minutes isolation between Coils and Ferrite Core.

• Magnetic shielded structure, excellent resistance to electro-magnetic interference(EMI).

• Tube loading, long-distance and export overseas transportation are very safe and reliable.

• Operating temperature range: -40℃ to +155℃(Including coil temperature rise due to self-generated heat).

• Storage temperature range: -20℃ to +85℃ .

• RoHS Compliant.

For more details, please refer to the product specification sheet (Attachment HPI1615SFpdf) or download it from the company website(www.coils-hhd.com).

The invention of this patent took around 19 months and was jointly completed by two companies in partnership.

We hope that We hope that in the wile of while promoting business growth goals to make sustainable development one of our core values, and continuing to try efforts for Chinese brands and technological innovation.These are inseparable from the care of governments at all levels and all the supports from new and existing customers.