Chinese Manufacturer Customized Choke Coil Inductor High Frequency Toroidal Choke Inductor Coil Magnetic T38*19*13 Inductor for Telecom, UL/Ce/RoHS Certified  

Inductance: 
Highest common mode impedance over the widest frequency range
RoHS Directive-compliant
PVC insulation shell
Tin-silver over copper terminations
High saturation flux density
Less flux leakage and beat
High effective insertion loss and excellent noise suppression 
Precise inductance
High current, horizontal or vertical mount
Operating temperature: -55 to 105°C
Wide frequency range, large adjustable range for permeability (μ0) from 50,000-160,000 
Housing and tubes are available
Customized specifications are accepted
Applications: switching power output and smoothing circuits
Used as choke coil for high frequency SMPs
Countermeasure against spike ripples
EMI/RFI filters
DC/DC converters
IP and OP devices
Power inverter 

Inductor is a circuit element that generates electromotive force due to the change of the current passing through, thereby resisting the change of current. This property is called inductance.
There are many types of inductance components, which are called differently depending on their appearance and function. The enameled wire is wound in multiple turns, and the inductors often used as electromagnets and transformers are also called coils according to their appearance. It is used to provide large reactance to high frequency through direct current or low frequency. Depending on the function, it is often called choke or choke. Often used with ferromagnetic materials to install larger inductors used in transformers, motors and generators, also called windings. The wire passes through the magnetic substance without a coil shape. It often acts as a small inductance for high-frequency filtering, and is often called a bead according to its appearance.

High-frequency transformers are power transformers whose working frequency exceeds the intermediate frequency (10kHz). They are mainly used as high-frequency switching power supply transformers in high-frequency switching power supplies. They are also used as high-frequency inverters in high-frequency inverter power supplies and high-frequency inverter welding machines. Change the power transformer. According to the working frequency, it can be divided into several grades: 10kHz-50kHz, 50kHz-100kHz, 100kHz~500kHz, 500kHz~1MHz, and above 10MHz.
The power capacity of each core type varies due to differences in topology, operating frequency and temperature, flux density, and material grade.
* Siemens material grade 

EE type Transformer Parameters

• Applied in a wide range
• High operation frequency
• Wide range of working voltage
• Large power
• Low temperature rising
• Compact, light and easy surface mounting
• Customized designs and specifications are accepted
• Various types of transformers are available
• Switching power transformer

High Frequency Transformer with Low Leakage Inductance and High-efficiency

• High power and compact design
• Utilizing high flux density ferrite cores with low loss and low temperature rise
• Applicable frequency range: 20 to 80kHz
• Operating frequency: higher than 200kHz
• High magnetic flux and low-loss magnetic materials
• With low leakage inductance and high-efficiency
• Highest reliability of high-voltage
• Designed according to customer's requirements to meet EI, ER, EE, and EEL model series
• Advanced production technique and reliable full-automatic testing facilities
• Customized specifications are welcome
• Applications: PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments, and instruments and so on.
• 

product procedure 
The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:

FAQ
Question 1: What is your payment term?

         Answer: T/T 30% in advance and balance 70% before shipment or L/C at sight.

Question 2: What is your delivery term?

         Answer: EXW, FOB, CFR, CIF

Question 3: What about Lead time?

        Answer: normally, it takes about 7 to 30 days after receiving your advance payment.

Question 4: Can you produce according to our samples?

       Answer: Yes, we can produce according to your samples or technical drawing, we will make the molds and fixtures.

Question 5: What is your sample's policy?

       Answer: We provide the sample according to your requirements, and you get to pay the sample's fee and courier freight, we will return the sample fee to you once you confirm the normal order.

Question 6: Do you test all your goods before delivery?

      Answer: Yes, we have 100% test before delivery.

Question 7: How do you make our business longterm and good relationship?

     Answer: Firstly, we provide good quality products with competitive price, to ensure our customer's benefit;

                     Secondly, we respect our customers as our friends, grow up together.

Kindly Reminder:
1. About the SAMPLES. Please provide specific specifications or sample material, we will evaluate your products, design and produce samples.
2. About PRICE. Transformers are custom products, due to the different materials and design, even if the same model, the price is not the same. The price also depends on the complexity of the  parameters and the amount of orders.
3. About SHIPPING. Samples in 3-5 days; mass production in 7-15 days.
4. Packaging, logistics, according to the specific requirements of the purchase and sale contracts.
             
Warm tips: the freight shown on the website is for reference only, and the                      specific freight will be calculated according to the actual delivery amount..
1: Proofing fee and time

1, Conventional sample

1. Proofing time: the sample preparation time is generally 1-2 working days

2. Sample preparation fee: samples are free of charge within 10 yuan at the market discount price, and the sample fee is required for more than 10 yuan.

3. Proofing freight: borne by the customer.

Production delivery period

1. Date calculation starting point: Based on the confirmation date of receiving customer order, start to calculate the production time and delivery period:

2. Production delivery period: under 50 sets, 3-5 working days, more than 50 sets, can be specifically agreed with customers;

[3: payment method and tax ticket description]

1. Payment method: the contract shall prevail. 2. About invoice: in order to facilitate customers and reduce the cost of customers, our factory offers and cooperates in many ways: a excluding tax price, B value-added tax invoice price; 4: Packing description and packing data]

Our factory will pack according to the requirements of customers:

1. General packaging: the outer packaging is a carton, the inner packaging is a protective film or PE plastic bag. The specific packaging quantity must be determined according to the product size;

2. Special packaging: mainly for high-power outer packaging, wooden box / board is used, and the inner packaging is PE protective film

3. Packing data: for customers who need to export, the packing adopts wooden box, and the inner packing is PE protective film; The size of wooden box can be customized according to the specific situation.

[5: after sales commitment] after sales contact number: 0755-23190596

1. Report in the whole process: proofing, sending samples, production, delivery, receiving, etc

2. Spare parts production: generally, 3 ‰ of the order quantity, and otherwise agreed in special cases.

3. Problem solving: in case of any problem, you can take photos to us first. We promise to solve the problem for you first, and then define the responsibility of the problem to solve your urgent problems.
Welcome to contact us for more details:

Shenzhen Yiyi Technology Co.,Ltd  

Add: 501, No.11, Lane 1, Nanzhuang New Village, Xinzhuang Community,