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Shenzhen Dowis Electronics Co.,Ltd
5 Years
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| Brand Name : | Dowis |
| Model Number : | ER4045, ER Series |
| Certification : | CE, UL, RoHs, ISO9001, 16949 |
| Payment Terms : | T/T, L/C |
| Delivery Time : | 3-4Weeks |
ER4045 High-Frequency Transformer Manufacturer Customized DW3550
1. High quality and Competitive price
2. Excellent after-sale service
3. High-temperature resistant
5. High efficiency of over 95%
6. Working frequency range 20kHZ-500kHZ
7. High isolation strength
8. Lower profile and weight
9. high power density
10. Operating temperature -40℃to+125℃
11. Custom designs available
12. Supply samples free with short delivery time
13. Suitable for wide range of switching power supply / power
transformer/ LED driver transformer/current
transformer/distribuition transformer
14. Welcome to visit our factory.
1. Drawing (Unit: mm)
2. Environmental Conditions
3. Electrical Characteristics
| Item | Unit | Test Terminal | Test Condition | MIN | NOR | MAX |
| Inductance Test | µH | 1-2 | 100KHz,0.3V, Ser | 550 | 570 | 590 |
| Leakage Test | µH | 1-2 | 100KHz,0.3V, Ser | / | / | 12 |
| Q Value | / | 1-2 | 100KHz,0.3V, Ser | 200 | / | / |
| Resistance Strength | mA | N1,N2-N3,N4,N5 | 3750Vac,60s | / | / | 1 |
| mA | N1,N2－Core | 1900Vac,60s | / | / | 1 | |
| mA | N3,N4,N5－Core | 1900Vac,60s | / | / | 1 | |
| Direct Current Resistance | mΩ | 1-2 | 25℃ | / | / | 80 |
| mΩ | 7-6 | 25℃ | / | / | 180 | |
| mΩ | 9-13,14 | 25℃ | / | / | 17 | |
| mΩ | 11,12-10 | 25℃ | / | / | 17 | |
| mΩ | 8-9 | 25℃ | / | / | 180 | |
| Insulation Resistance | MΩ | Np-Ns | 500Vdc | 100 | / | / |
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.
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