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Shenzhen Dowis Electronics Co.,Ltd
5 Years
| Ask Lasest Price | |
| Brand Name : | Dowis |
| Model Number : | EM25, EM Series |
| Certification : | CE, UL, RoHs, ISO9001, 16949 |
| Payment Terms : | T/T, L/C |
| Delivery Time : | 3-4Weeks |
EM25 High-Frequency Transformer Manufacturer Customized DW5668
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. Process of winding
3. Electrical Characteristics
| NO. | Item | Test terminal | Test value | Test condition | Test equipment |
| 1 | Inductance value | L(3-1) | 340uH±10% | 100KHz 0.4V 25℃ | TH-2816 |
| / | |||||
| 2 | Leakage value | LK(3-1) short circuit 5+7 | 49uH±15% | 100KHz 0.4V 25℃ | TH-2816 |
| LK(3-1) short circuit6+8 | 49uH±15% | ||||
| LK(A-B) | 50uH Max | ||||
| 3 | Resistance strength | Winding to winding | / | 5mA 1MIN | CJ2670 |
| 4 | Direct current resistance | DCR(1-3) | 0.14Ω MAX | AT:25°C | CH-502 |
| DCR(5-7) | 8.6mΩ MAX. | ||||
| DCR(6-8) | 8.6mΩ MAX | ||||
| 5 | Insulation resistance | 1 – 3 | 1600KHZ min | DC 500V | MF2511 |
| 6 | Enameled wire grade | CLASS H | |||
| 7 | Requirement of HSF | Refer to Customer Environmental Management Material Standards List for implementation | |||
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