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Shenzhen Dowis Electronics Co.,Ltd
5 Years
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| Brand Name : | Dowis |
| Model Number : | EE16, EE series |
| Certification : | CE, UL, RoHs, ISO9001, 16949 |
| Payment Terms : | T/T, L/C |
| Delivery Time : | 3-4Weeks |
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. Winding Structure
3. Process of Winding
Winding | Retaining Wall | Pin | Wire& Description | TS | Winding Method | Groove Position | Insulation Tape | Tube | Method of entering Axle | Method of entering Axle | |||||
P1-5 | P6-9 | Start | End | Start | End | Tape Type | TS | Start | End | ||||||
| N1 | / | / | (5) | (4) | PN180 Class0 0.127mm*1P | 101 | Tightly wind 1 layer+Evenly wind 1 layer | Between P4 & P5 | Between P3 & P4 | W7.8 Light Yellow | 2 | / | / | P1-5 Towards right | Front |
| N2 | / | / | (1) | (2) | PN180 Class0 0.127mm*1P | 30 | Evenly wind 1 layer | Between P1 & P2 | Between P2 & P3 | W8.0 Light Yellow | 2 | / | / | P1-5 Towards Left | |
| N3 | / | / | (9) | (8) | FLW-F(TC) ∮0.20mm*1P | 18 | Tightly wind 1 layer | Between P8 & P9 | Between P7 & P8 | W8.0 Light Yellow | 2 | / | / | ||
| N4 | / | / | (7) | (6) | FLW-F(TC) ∮0.20mm*1P | 16 | Tightly wind 1 layer | Between P7 & P8 | Between P6 & P7 | W8.0 Light Yellow | 2 | / | / | ||
4. Electrical Specification
| Item | Test Terminal | Test Condition | Standard Requirement | Equipment | |||
Semi-finished goods | Manufactured goods | QC Exam | |||||
| Inductance Test | 4 | 5 | 50KHz,0.1V | 1.235~1.365mH | 1.235~1.365mH | 1.3mH±8% | TH1062 or equal |
| Leakage Test | 4 | 5 | 50KHz,0.1V (Short Circus with other winding) | 40uH MAX | 40uH MAX | 40uH MAX | TH106 or equal |
| Direct Current Resistance | 4 | 5 | DC 25℃ | 4.0 Ω max | 4.0 Ω max | 4.0 Ω max | TH2511or equal |
| 1 | 2 | 1.3 Ω max | 1.3 Ω max | 1.3 Ω max | |||
| 9 | 8 | 350m Ω max | 350m Ω max | 350m Ω max | |||
| 7 | 6 | 350m Ω max | 350m Ω max | 350m Ω max | |||
| Turns Test | All Winding | 20KHz,1V | NP:NS=101:30:18:16(±0.2TS) | CH3250 or equal | |||
| High-Voltage Insulation Test | Pri to Sec | AC-50Hz-1mA | 4200V 2 Sec | 4200V 2 Sec | 3750V 60 Sec | CJ2670 or equal | |
| All Pins to Core | 2000V 2 Sec | 2000V 2 Sec | 1750V 60 Sec | ||||
| N3 to N4 | 3000V 2 Sec | 3000V 2 Sec | 2500V 60 Sec | ||||
| Layer Insulation | Pin4-5 | 50Hz | AC 1500 Impulse Voltage | CJ2670 or equal | |||
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