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High Frequency Transformer

A high-frequency transformer is a static electromagnetic device that transforms voltage, current and impedance without changing the frequency. It is mainly used as high-frequency switching power supply transformer in high-frequency switching power supply, and also used as high-frequency inverter power supply transformer in high-frequency inverter power supply and high-frequency inverter welding machine.

According to the working frequency, it can be divided into several grades: 10kHz-50kHz, 50kHz-100kHz, 100kHz500kHz, 500kHz~1MHz, and above 10MHz.


The inductor is an element that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to a transformer, but it has only one winding. The inductor has a certain inductance, it only hinders the change of current. If the inductor is in a state where no current is flowing, when the circuit is on, it will try to block current from flowing through it; if the inductor is in a state where current is flowing, and the circuit is off, it will try to maintain the current unchanged. Inductors are also called chokes, reactors, and dynamic reactors.


The Coil usually refers to a loop of wire winding. The most common coil applications are: motors, inductors, transformers and loop antennas. The coil in the circuit refers to the inductor. It is wound by wires one by one, and the wires are insulated from each other. The insulating tube can be hollow, iron-containing core or magnetic powder-containing core, which is called inductor.

The inductance can be divided into fixed inductance and variable inductance. Fixed inductance coil is referred to as inductance or coil.

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Products Display

Focus on high-end products for 20+ years, and provide high-quality products and services to customers who have high requirements for quality

HF TransformerInductanceCoil
  • High Frequency Transformer EP Series

  • High Frequency Transformer EFD Series

  • High Frequency Transformer ER Series

  • High Frequency Transformer EE Series

  • High Frequency Transformer EF Series

  • High Frequency Transformer PQ Series

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  • DC Filter Inductor

  • Bar Filter Inductor

  • SMD Filter Inductor

  • UF Common mode Choke

  • H Filter Inductor

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  • Toroidal Common mode Choke

  • Toroidal Filter inductor

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Professional technical support

JRPanel provides a full range of high-frequency transformers, inductors, and coils, and it can also be customized according to drawings, samples or on-demand design to meet customers' non-standard needs

Online Quote

JRPanel independently develops online pricing and ordering systems, and customers can submit parameters independently, which can get product prices directly, simple and fast

Excellent Production System

From raw material procurement, production, testing, finished products storage to after-sales, standard operations are performed to eliminate defective products

Reliable Product Quality

JRPanel has passed UL and ISO quality management system certification to ensure product safety

Efficient After-salesService

7x24 Hrs Professional Service & Technical Support

Fast Delivery

Factory Cloud Management, Fast production

Factory Scale

JRPanel has more than 100+ advanced CNC automatic winding machines and automatic winding machines, etc.;The fab has excellent testing equipment, such
as comprehensive testing instruments, multi-channel withstand voltage testers, inductance testers, and programmable withstand voltage meters. There are
also a series of supporting equipment such as vacuum impregnation machine and infrared tunnel oven.

Laser Drilling

Laser Drilling

Minimum aperture up to 0.1mm for high-density interconnection (HDI) build-up multi-layer PCB, with electrical conduction between wirings on each layer controlled through interlayer vias. Currently laser drilling machines are extensively applied in processing of the Interlayer via-holes.

PCB Via Hole Plugging

PCB Via Hole Plugging

Via Fill is a special PCB manufacturing technique used to selectively and completely close via holes with epoxy. There are many instances in which a PCB designer might want to have a via filled. Some key benefits are:More reliable surface mountsIncreased assembly yieldsImproved reliability by decreasing the probability of trapped air or liquids.

Plating Through Holes

Plating Through Holes

Real-time monitoring of chemical quality in copper plating sinks.The aim of electroless copper is to plate a conductive layer through a hole or into a blind microvia.

Vacuum Etching

Vacuum Etching

Using the vacuum etching technology to make sure that both surfaces of the board are very uniform. it produces a straighter conductor profile, allowing the resulting plate to more accurately match the wiring requirements.


JRPanel has passed CQC voluntary certification, ISO9001 quality management system certification, and American UL certification. All products have
passed SGS environmental protection certification and comply with international REACH / RoHS certification

UL certification
ISO9001 Quality Management
System Certification
CQC quality certification

Production Is Strictly Controlled

JRPanel strictly controls every step of the production, creates high-quality products, professional services, and fast delivery, let
our customers receive satisfactory products.

Incoming material inspection of frame and magnetic core, selected pure copper wire, to prevent defective products.

Raw Material Inspection

All raw materials have passed the double inspection of incoming materials and manufacturers, and they are checked at every level.

Fine Craftsmanship

The overall appearance, process performance, brightness and size of the transformer meet the standard.

Neat Appearance

Full inspection of finished products before packaging (appearance inspection, finished product test, safety test).

Product Inspection

Wide Application

Transformers/inductors are widely used in high-tech fields such as communications, power supplies, computer networks, digital
products, industrial control, science and education, medical treatment, aerospace, national defense, etc.

Power Supply
Digital Product
Science &

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