SQ series magnetic core wire common mode inductor
SQ1918
SQ series toroidal choke inductor is a typical copper foil wire inductor designed specifically for high-power power supplies, industrial equipment, and new energy scenarios.
Quantity
SQ series toroidal choke inductor is a typical copper foil wire inductor designed specifically for high-power power supplies, industrial equipment, and new energy scenarios. By using Square magnetic core symmetrically wrapped with flat copper foil wire, high-frequency losses and temperature rise are significantly reduced, while the current carrying capacity is improved, which can effectively suppress common mode interference on power lines and help equipment pass strict EMC certification. The overall use of epoxy resin full encapsulation technology has high insulation strength, moisture and dust resistance, excellent seismic performance, and can operate stably for a long time in complex industrial environments.
Core advantages of Flat wire inductor
1. Efficient EMI suppression and strong filtering effect
The symmetrical double winding design combined with high permeability magnetic cores has outstanding suppression effect on common mode noise, effectively filtering out high-frequency interference from the power grid and ensuring stable operation of the equipment.
2. Fully sealed structure, high reliability
Epoxy resin is fully encapsulated, and the coil and magnetic core are completely fixed. It is moisture-proof, dustproof, shockproof, and resistant to mechanical impact, with excellent insulation and voltage resistance, suitable for industrial applications.
3. Compact structure and good heat dissipation performance
The flat wire winding structure has a large heat dissipation area and better heat dissipation efficiency than traditional round copper wire inductors. It achieves high-power filtering in a limited space and is suitable for power supply miniaturization design.
4. Ultra high current carrying capacity, low loss and low temperature rise
Flat copper foil wire winding, with a large cross-sectional area and minimal skin effect, can carry tens to hundreds of amperes of current, low high-frequency loss, low operating temperature for long-term full load, and higher efficiency.
1. Efficient EMI suppression and strong filtering effect
The symmetrical double winding design combined with high permeability magnetic cores has outstanding suppression effect on common mode noise, effectively filtering out high-frequency interference from the power grid and ensuring stable operation of the equipment.
2. Fully sealed structure, high reliability
Epoxy resin is fully encapsulated, and the coil and magnetic core are completely fixed. It is moisture-proof, dustproof, shockproof, and resistant to mechanical impact, with excellent insulation and voltage resistance, suitable for industrial applications.
3. Compact structure and good heat dissipation performance
The flat wire winding structure has a large heat dissipation area and better heat dissipation efficiency than traditional round copper wire inductors. It achieves high-power filtering in a limited space and is suitable for power supply miniaturization design.
4. Ultra high current carrying capacity, low loss and low temperature rise
Flat copper foil wire winding, with a large cross-sectional area and minimal skin effect, can carry tens to hundreds of amperes of current, low high-frequency loss, low operating temperature for long-term full load, and higher efficiency.
Customized Services
1. Customization of core electrical parameters
Inductance customization: Based on your EMI filtering needs, accurately match the inductance value and adjust it as needed from tens of μ H to tens of mH.
Rated current customization: Customize high current carrying capacity of 10A~100A+for different power levels, suitable for high-power scenarios such as frequency converters, charging stations, photovoltaic inverters, etc.
Customization of winding process: Supports flat copper foil wire/copper strip wire winding, with customizable line width, thickness, and turns to optimize high-frequency loss and heat dissipation performance.
2. Customization of Structure and Installation
Customization of magnetic core specifications: Provide different sizes of U-shaped/EE magnetic cores based on PCB layout and installation space to optimize the overall volume.
Pin and base customization: supports direct insertion of pins, wiring terminals, and customization of different pin spacing to adapt to your circuit board installation method.
Customization of external dimensions: The outer diameter, height, and overall size of the coil can be adjusted to meet the internal space limitations of the equipment.
3. Customization of insulation and protection processes
Customization of Sealing Process: Epoxy resin full sealing/semi sealing options are available to enhance moisture resistance, dust prevention, and shock resistance, suitable for complex industrial and automotive grade working conditions.
Customization of insulation level: According to safety standards, customize the insulation withstand voltage level between windings and between windings and magnetic cores to meet UL, CE and other certification requirements.
Customization of temperature resistance level: High temperature resistant wire and sealant can be selected to adapt to a wide temperature working environment of -40 ℃~+125 ℃.
4. Scenario based optimization and customization
Application scenario optimization: Targeted optimization of filtering performance and reliability for different scenarios such as new energy, industrial control, and medical equipment.
Electromagnetic compatibility adaptation: To match your overall circuit, optimize inductance parameters, and assist equipment in passing EMC electromagnetic compatibility testing.
High Power Inductor real-shot details:




Company Introduction
Shenzhen CXWON Technology Co., Ltd. was established in 2012. It is a national high-tech enterprise that integrates R&D, production and sales. It has been specializing in the field of electronic transformers for over a decade and complies with international safety standards. The company's products have steadily increased their market share in the domestic market. The factory covers an area of 5,000 square meters and is equipped with first-class facilities and advanced equipment, as well as numerous outstanding professionals.
The company offers over 1,000 different products, specializing in the research and production of high-frequency transformers, high-voltage transformers, low-frequency transformers, audio transformers, ozone high-voltage packs, negative ion generators, power adapters, switching power supplies, and various inductor coils. These products are widely used in household appliances, intelligent control, communication equipment, instruments and meters, security control, industrial control, and many other fields. The company provides high-performance electronic transformers and corresponding solutions to global customers. Its products have passed UL certification and ISO quality management system certification. Some have also obtained safety certifications such as TUV, GS, CE, FCC, and CQC. The quality meets international standards.
Over the years, our company has adhered to the principle of"unceasing pursuit of perfect quality and fully meeting customer requirements."This is the company's persistent effort goal and direction.
The company offers over 1,000 different products, specializing in the research and production of high-frequency transformers, high-voltage transformers, low-frequency transformers, audio transformers, ozone high-voltage packs, negative ion generators, power adapters, switching power supplies, and various inductor coils. These products are widely used in household appliances, intelligent control, communication equipment, instruments and meters, security control, industrial control, and many other fields. The company provides high-performance electronic transformers and corresponding solutions to global customers. Its products have passed UL certification and ISO quality management system certification. Some have also obtained safety certifications such as TUV, GS, CE, FCC, and CQC. The quality meets international standards.
Over the years, our company has adhered to the principle of"unceasing pursuit of perfect quality and fully meeting customer requirements."This is the company's persistent effort goal and direction.

Typical application scenarios
Industrial frequency converters, servo drives, high-power switching power supplies
Photovoltaic inverter, energy storage converter (PCS), charging pile power module
New energy vehicle on-board charger (OBC), DC-DC power supply
High power EMI filtering scenarios such as communication base station power supply and medical equipment power supply
Flowchart

FAQ
1:About the product
Due to the fact that transformers are customized products with different parameters, please be sure to contact us before placing an order to confirm the parameters, dimensions, delivery time, and other information. The above is a large series of products, with specific models, pins, sizes, and other parameters. Please contact us first for personalized customization.
2: Regarding shipping fees
Due to the fact that this product is a customized product, the specifications required by each customer may vary, resulting in unpredictable shipping costs. The actual shipping costs are subject to confirmation.
3: Regarding Payment
Our company can provide samples for free, and customers need to pay for shipping fees. Batch production requires a 30% deposit, and our company will arrange production; The customer pays the final payment, and our company arranges for shipment. Long term stable cooperative relationship, subject to negotiation between both parties.
4: About Price
This product is an ordered item and requires careful communication between the buyer and seller to confirm the material, specifications, order quantity, transportation method, payment method, and other relevant information of the ordered product! The quotation confirmed by both parties' signatures and seals shall prevail.
5: Regarding Quality
Our company has always adhered to the principle of quality first to serve all buyers. Please rest assured of the quality! And in online transactions, credit comes first! Once there is a quality issue, our company will provide returns and exchanges. Buyers don't have to worry about no guarantee after purchasing the product!
6: Buyers must read
When receiving, please carefully check whether the packaging is intact. If there are any damages, missing items, quality problems, etc. after unpacking, please contact us in a timely manner and we will do our best to solve them.
Why choose us
1. Comprehensive after-sales service:
The company adheres to the principle of relying on the rich experience of its technical staff, complete production equipment and scientific management. With reasonable prices, warm services, it has won the trust and cooperation of customers both at home and abroad.
2. Focus on high-quality transformers:
The company has complete production and processing equipment, strict management system, professional technology and production personnel. The equipment is complete, and it specializes in processing and manufacturing with a complete production process. Its strength and product quality have been recognized in the industry.
3. Complete product range:
The company adheres to the concept of innovation and pragmatism, and is committed to the research, production and sales of ring transformers. Currently, the main products include low-frequency transformers, reverse transformers, 220V to 110V power voltage conversion transformers, power transformers, ring-type transformers, cylindrical transformers, etc.
4. Strong production conditions:
We rely on a large-scale, automated production base, advanced technology and strict quality management, which have created strong production capacity and stable product quality. We can provide customers with timely and reliable supply guarantees and formulate exclusive solutions for different usage scenarios.
The company adheres to the principle of relying on the rich experience of its technical staff, complete production equipment and scientific management. With reasonable prices, warm services, it has won the trust and cooperation of customers both at home and abroad.
2. Focus on high-quality transformers:
The company has complete production and processing equipment, strict management system, professional technology and production personnel. The equipment is complete, and it specializes in processing and manufacturing with a complete production process. Its strength and product quality have been recognized in the industry.
3. Complete product range:
The company adheres to the concept of innovation and pragmatism, and is committed to the research, production and sales of ring transformers. Currently, the main products include low-frequency transformers, reverse transformers, 220V to 110V power voltage conversion transformers, power transformers, ring-type transformers, cylindrical transformers, etc.
4. Strong production conditions:
We rely on a large-scale, automated production base, advanced technology and strict quality management, which have created strong production capacity and stable product quality. We can provide customers with timely and reliable supply guarantees and formulate exclusive solutions for different usage scenarios.