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EF25 High-Frequency Transformer Manufacturer Customized DW3510

Categories HF Transformer
Brand Name: Dowis
Model Number: EF25, EF Series
Certification: CE, UL, RoHs, ISO9001, 16949
Place of Origin: CN
MOQ: 1000pcs
Payment Terms: T/T, L/C
Delivery Time: 3-4Weeks
Packaging Details: Carton Box
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  • Company Profile

EF25 High-Frequency Transformer Manufacturer Customized DW3510


EF25 High-Frequency Transformer Manufacturer Customized DW3510

Shenzhen Dowis Electronics Co., Ltd. is a professional manufacturer of electronic transformers, inductors, and filters integrating R&D, production, and sales. It is a national high-tech enterprise and has passed the IATF16949:2016 automotive industry quality management system certification, the product has passed the "UL""CQC" and other safety certifications. The products are widely used in communication equipment, new energy vehicles, industrial control equipment, high-power LED drives and other market areas. The industry has high visibility. In addition to the domestic market, but also exported to many countries in Europe and the United States.


In order to further expand production capacity, it has set up a special test area construction area in zhaoqing YueGui cooperation in 2018 of 14000 square meters of manufacturing center named ZhaoQing Sheng Xiang electronic technology co., Ltd. Its management technical team has rich experience in cooperating with customers from well-known domestic enterprises and overseas. The design of products can fully follow customer’s needs and services with a good quality control system, and it has been recognized by many famous enterprises as the core suppliers. We look forward to cooperating with you.

1. Drawing (Unit: mm)




2. Construction





3. Schematic Diagram




4. Process of winding

WindingPin positionTS
Method of windingGroove position Insulation tape Tube
StartEndWire & descriptionStartEndTape typeTSStartEnd

Method of entering axle

Direction of axle

N14(ROD)2UEW-B,φ0.25mm×2bars25Tightly wind a layer (The end wire is reserved for the length of N6 line and then cut off.)Between Pin4,5Top16.0mm2.1/24L×15mm

Pin towards left

Front
N21NC2UEW-B,φ0.25mm×2bars20Sparsely wind a layerBetween Pin1,2hang16.0mm2.1//

Pin towards right

N3(8)(7)TIW-B, φ0.70mm×1bars8Double wound Tightly wound a layerBetween Pin7,8Between Pin6,716.0mm3.118L×10mm18L×10mm

Pin towards left

N4(10)(9)TIW-B, φ0.70mm×1bars8Between Pin9,10Between Pin8,918L×10mm18L×10mm
N51NC2UEW-B,φ0.25mm×2bars20Sparsely wind a layerBetween Pin1,2hang16.0mm2.1//

Pin towards right

N6(ROD)32UEW-B,φ0.25mm×2bars25Tightly wind a layerTop skipBetween Pin3,416.0mm2.1//

Pin towards left

N7122UEW-B,φ0.25mm×1bars7Sparsely wind a layerBetween Pin1,2Between Pin2,316.0mm3.1//
N8(6)(8)TIW-B, φ0.25mm×1bars3Sparsely wind a layerBetween Pin6,7Between Pin7,816.0mm3.126L×13mm26L×13mm





5. Electrical Characteristics

ItemTest terminalTest conditionStandard requirement

Equipment

Semi-finished goodsFinished goodsQC Exam
Inductance Test431KHz,1.0V1.1mH±17%1.1mH±19%1.1mH±20%

TH1062 or equal

Leakage Test43

1KHz,1.0V

(short circuit to Pin6,7,8,9,10)

70 uH max70 uH max70 uH max

TH1062 or equal

Direct Current Resistance43DC 25℃488mΩ max488mΩ max488mΩ max

TH2511 or equal

8722mΩ max22mΩ max22mΩ max
10922mΩ max22mΩ max22mΩ max
12179mΩ max179mΩ max179mΩ max
6889mΩ max89mΩ max89mΩ max
Turn testAll windings20KHz,1V50:8:8:7:3(±0.2Ts)50:8:8:7:3(±0.2Ts)50:8:8:7:3(±0.2Ts)

CH3250 or equal

High-Voltage TestPrimary to secondaryAC-50Hz-1mA3000±10V,1~2sec3100±10V,1~2sec3000V,2sec

CH3250 or equal

Pin1+2 to Pin3+4AC-50Hz-1mA500±10V,1~2sec600±10V,1~2sec500V, 2sec
Pin6+7 to Pin9+10AC-50Hz-1mA500±10V,1~2sec600±10V,1~2sec500V, 2sec
All Pins to coreAC-50Hz-1mA1500±10V,1~2sec1600±10V,1~2sec1500V,2sec
Quality EF25 High-Frequency Transformer Manufacturer Customized DW3510 for sale
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