Dongguan Zhengmao Electronics Co., Ltd. manufactures SQ Series Shielded power inductors designed for compact DC-DC converters, switching power supplies, automotive electronics, and high-frequency power management systems.
The SQ series is engineered with a low-profile, shielded magnetic structure that provides excellent EMI suppression, stable inductance performance, and high current handling capability. It is widely used in modern electronic systems that require miniaturization, high efficiency, and reliable thermal performance.
With precision winding technology and optimized ferrite core design, SQ series inductors ensure low power loss, strong anti-interference ability, and long-term operational stability in demanding environments.
Low Profile Compact Design
SQ series features a compact structure, ideal for space-limited PCB layouts and miniaturized electronic devices.
High Current Capability
Designed to support stable operation under high current load conditions.
Excellent EMI Shielding
Shielded structure effectively reduces electromagnetic interference and improves circuit stability.
Low Power Loss Performance
Optimized ferrite core material reduces energy loss and improves efficiency.
Stable High-Frequency Operation
Suitable for switching power supplies and DC-DC converter applications.
Strong Thermal Reliability
Ensures stable performance under continuous high-temperature operation.

SQ Series shielded power inductors are widely used in:
DC-DC Converter Modules
Provides stable voltage conversion and efficient power regulation.
Switching Power Supplies
Improves energy efficiency and reduces ripple current.
Automotive Electronics
Used in vehicle control systems and intelligent automotive modules.
Communication Equipment
Ensures stable operation in networking and communication systems.
Consumer Electronics
Applied in smartphones, tablets, smart devices, and compact electronics.
Industrial Control Systems
Supports stable performance in automation and control equipment.
LED Driver Systems
Provides stable current regulation for LED power applications.
Item | Description |
Product Name | |
Product Type | SMD Power inductor |
Structure | Shielded |
Core Material | Ferrite Core |
Series | SQ Type |
Mounting Type | Surface Mount (SMD) |
Inductance Range | Customizable |
Rated Current | Customizable |
Operating Temperature | -40°C to +125°C |
Application | DC-DC / Power Conversion |
OEM & ODM | Supported |
Certifications | ISO9001 / UL / IATF16949 |

Dongguan Zhengmao Electronics Co., Ltd. adopts advanced automated production systems and strict quality control processes to ensure consistent performance of SQ series inductors.
Our manufacturing process includes:
Precision ferrite core processing
Automatic winding production
Shielded structure assembly
Electrical parameter testing
Inductance and saturation current verification
Thermal reliability testing
EMI performance inspection
Full product aging test
We provide tailored SQ series inductor solutions based on customer circuit design requirements.
Customization options include:
Inductance value adjustment
High current optimization
Low DCR design
Size and footprint customization
EMI shielding enhancement
High-frequency performance tuning
Industrial-grade reliability improvement
Our engineering team supports development from sample design to mass production.
Professional Magnetic Component Manufacturer
We specialize in inductors, transformers, and EMI filtering components for industrial and electronic applications.
Advanced Automated Production
Modern equipment ensures stable quality and high production efficiency.
Strong OEM & ODM Capability
Flexible customization services based on customer requirements.
Strict Quality Management
Products comply with ISO9001, UL, and IATF16949 standards.
Fast Engineering Support
Professional technical team provides quick response and design optimization.
What is an SQ Series Inductor?
It is a compact shielded power inductor designed for DC-DC conversion and power management applications.
What are the advantages of SQ series inductors?
They offer compact size, high efficiency, strong EMI shielding, and stable high-current performance.
Where are SQ inductors used?
They are widely used in automotive electronics, communication systems, industrial control, and consumer electronics.
Can SQ inductors be customized?
Yes. Dongguan Zhengmao Electronics Co., Ltd. provides full OEM & ODM customization services.
Mobile: +86 136 4989 9395
pmc@dgzeal.com
www.dgzeal.com
No. 9 Tiesong Zhongwei Road, Qingxi Town, Dongguan City, Guangdong Province

Copyright @2026 Dongguan Zhengmao Electronics Co., Ltd.
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