Switching power supply Vertical/Horizontal filter inductor base，For this product, I choose PHENOLIC. It has outstanding high-temperature resistance and can withstand a working temperature rise of over 150℃. It is suitable for the heat dissipation requirements of inductors during high-frequency operation, ensuring stable performance. It has high mechanical strength, is resistant to impact and vibration, and can effectively protect the inductor winding and magnetic core, thus extending their service life. It has excellent insulation performance, high dielectric strength, eliminates the risk of short circuit and enhances electrical safety. It is resistant to chemical corrosion and can adapt to complex environments such as humidity and oil stains, which helps the product operate stably and reliably in industrial, automotive and other fields.

ET24 high frequency filter bobbin ，This product is made of PBT material, which can withstand high temperatures of 120-150℃. It is suitable for high-temperature environments such as car engine compartments and industrial frequency converters, ensuring stable filtering performance. The dielectric strength is ≥20kV/mm, and its high insulation eliminates the risk of high-voltage short circuits, making it suitable for safety-sensitive fields such as new energy and medical care. Impact resistance up to 20kJ/m², vibration resistance, protection of winding structure, and extended service life. Resistant to oil, moisture and solvents, it can withstand complex environments without additional protection, reducing maintenance costs. The dimensional tolerance is ≤0.1mm, ensuring precise fit between the winding and the magnetic core, and consistent filtering effect. Compliant with UL94 V-0 flame retardant standards, it enhances equipment safety and facilitates compliance certification. To ensure the stability, safety and durability of equipment in industrial, automotive and other fields.

The best selling ET35 series inductors are made of PHENOLIC (PHENOLIC) material, which has outstanding high-temperature resistance and can withstand temperatures above 150℃. They are suitable for high-temperature environments such as industrial equipment and vehicle power supplies, avoiding thermal deformation. It has high mechanical strength, is resistant to impact and winding tension, and can withstand industrial vibration and assembly stress. It has excellent insulation performance with high insulation resistance, which can prevent short circuits between windings and is suitable for high-voltage scenarios. Resistant to chemical corrosion, flux and oil stains, and extending service life. It can meet the strict demands of ET35 in industrial, automotive and other fields.If you can't find the right size, we offer customization services. We have a professional team of technical engineers. Please feel free to contact us at any time if you need it.

For the T28 series common mode inductor bobbin， we choose PBT material, which has strong heat resistance and a high heat distortion temperature (over 200℃ for the enhanced type). It can withstand working environments ranging from -40 ℃ to 125℃ and is resistant to high-temperature aging. It has excellent insulation performance, with a volume resistivity of 10¹⁴ to 10¹⁶Ω · cm and a dielectric strength exceeding 20kV/mm, ensuring electrical safety. It features high mechanical strength, creep resistance, resistance to winding tension, and stable supporting structure. It is also resistant to chemical corrosion, can achieve UL94 V0 flame retardancy, and is easy to be injection molded, among other advantages.If you can't find the right size, we offer customization services. We have a professional team of technical engineers. Please feel free to contact us at any time if you need it

The ET28 series horizontal/vertical High frequency inductors are our most popular products, with matching coil former and case. Our factory has accumulated in the electronic component industry for decades and has countless products. If you can't find the suitable size, please contact us immediately. I have a professional team of technical engineers. We customize suitable transformers, inductors, current transformers, etc. for you

The ET35 series inductors are our best-selling products. By flexibly adapting to different core materials (such as manganese-zinc ferrite) and winding processes (such as multi-layer flat winding), the ET35 series common mode inductors not only ensure the EMC performance of equipment but also meet the requirements of miniaturization and high reliability, becoming the core EMI suppression components of modern electronic systems.For example, the ET35 anti interference inductor can be used in laboratory instruments In the signal acquisition circuit of a gene sequencer, the ET35 common-mode inductor (such as Mycoiltech's low-noise model) can suppress the interference of power supply ripple on weak bioelectrical signals. After the application of a certain sequencer, the baseline noise was reduced from ±10μV to ±2μV, improving the accuracy of gene mutation detection.

ET20 horizontal header plate, 2+2 pins phenolic material base for ET20 inductor. Base Size=20.9mmX16.15mmX12.1mm. Parallel Distance=13.0mm. Pin Distance=10.0mm. We manufacture various EMI filter inductors, accept custom made electronic inductors.

ET20 choke coil bobbin. PBT material ET20 coil former. Bobbin Size=15.6mmX12.3mm. Multi section bobbin, supply horizontal/vertical ET20 header plate/inductor base. We manufacture final ET20 filter inductor, accept custom made transformers.

2+2 pins ET20 horizontal inductor base, phenolic material base for ET20 filter. Base Size=21.0mmX21.0mmX11.6mm. Parallel Distance=18.5mm. Pin Distance=10.0mm. We manufacture final ET20 filter inductor, accept custom made transformers.

ET24 vertical 2+2 pins base. Supply ET24 four sections coil bobbin. Base size=29.1mmX17.4mmX24.6mm. Pin pitch=13.0mm, Parallel distance=10.0mm. We manufacture ET24 filter for EMI suppression, widely used in electrical equipment, medical equipments, computers, switching power supplies, communication equipments, power components, vehicle electronic equipments.

2+2 pins horizontal base ET24. Supply matched ET24 multi sections coil former. Base size=24.0mmX24.0mmX16.0mm. Pin pitch=15.0, Parallel distance=21.0mm. Our transformers widely used in electrical equipments, medical equipments, computers, switching power supplies, communication equipments, power components, vehicle electronic equipments.

Wound ET20 coil base, 2+2 through hole pins. Pin pitch=10.0mm, parallel distance=13.0mm. Manufacture final ET20 inductor, welcome customized coils and transformers.

Filter inductor ET20 horizontal base, common mode choke 2+2 pins base factory. Pin pitch=10.0mm, parallel distance=13.0mm. Manufacture final ET20 inductor, welcome customized coils and transformers.

ET20 coil former for low frequency bobbin, flyback transformer bobbin with base. Manufacture final ET20 transformer, welcome customized transformers.  Bobbin Size=15.6mmX11.3mm,we can provide coil former and base samples for testing.

Multi slots bobbin ET24 coil former. We manufacture final transformer for customer. Our transformers widely used in electrical equipments, medical equipments, computers, switching power supplies, communication equipments, power components, vehicle electronic equipments.

ET24 ferrite core bobbin. We manufacture final transformer for customer. Our transformers widely used in electrical equipments, medical equipments, computers, switching power supplies, communication equipments, power components, vehicle electronic equipments.

ET20 high frequency bobbin, flyback transformer bobbin with base. Manufacture final ET20 transformer, welcome customized transformers.  Bobbin Size=15.0mmX11.3mm.

ET28 filter inductor base. ET28 ferrite core inductor. Base size=28.4mmX20.1mmX18.0mm. Parallel distance=21.0mm. Pin pitch=15.0mm. ET28 common mode choke. PBT material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 vertical coil base. 2+2 pin ferrite core inductor. Base size=29.2mmX21.1mmX34.5mm. Parallel distance=22.0mm. Pin pitch=12.5mm. ET28 common mode choke. Phenolic material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

2+2 pin vertical inductor base. ET28 ferrite core inductor. Base size=29.2mmX21.1mmX34.5mm. Parallel distance=15.0mm. Pin pitch=12.5mm. ET28 common mode choke. Phenolic material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 common mode filter. 2+2 pin ET28 vertical base. Parallel distance=19.5mm. Pin pitch=11.0mm.  ET28 ferrite core inductor. Base size=29.2mmX21.1mmX34.5mm. ET28 common mode choke. Phenolic material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

2+2 pin vertical inductor base. ET28 ferrite core inductor. Base size=29.2mmX21.1mmX34.5mm. Parallel distance=15.0mm. Pin pitch=12.5mm. ET28 common mode choke. Phenolic material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

Ferrite core inductor factory. High quality and cheap price choke coils. Coil Size=21.5mmX18.3mmX10.8mm. ET28 common mode choke. PBT material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

Four slots coil former. ET28 common mode choke design. Coil Size=21.5mmX18.3mmX10.8mm. PBT material choke coils factory. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 vertical base pin 2+2. ET base for inductor. Pin pitch=10.0mm. Parallel distance=13.0mm. Bobbin Size=29.2mmX21.1mmX34.5mm. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 high frequency bobbin. ET28 plastic bobbin with base. Four slots ET28 PA66 material bobbin. Pin pitch=4.6mm. Parallel distance=27.7mm. Bobbin Size=40.2mmX26.2mmX20.5mm. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 bobbin for chokes. ET28 6+6 pin horizontal bobbin. Four slots ET28 PA66 material base. Pin pitch=4.6mm. Parallel distance=27.7mm. Bobbin Size=40.2mmX26.2mmX20.5mm. We can make tooling to meet different dimensions.UL REC: 94V-0

ET28 inductor bobbin cover. ET28 common mode choke coil. ET28 PBT material inductor cover. We can make tooling to meet different dimensions.  UL REC: 94V-0

ET28 horizontal inductor base. ET28 common mode choke coil. 2+2 pins ET28 phenolic material base. We can make tooling to meet different dimensions. Base Size=28mmX28mmX18mm. UL REC: 94V-0

2+2 pin ET28 vertical base. ET28 common mode choke coil. ET28 phenolic material bobbin base. We can make tooling to meet different dimensions. Base Size=29.5mmX20mmX35.5mm. UL REC: 94V-0