EPC19 Shielded SMD Power Inductors 20.5*24.5*11mm
EPC19 Shielded SMD Power Inductors Manufacture Customized DW6794
Applications :
. Power supply for VTRs.
. LCD televisions.
. Notebook PCs.
. Portable communication equipment.
. DC/DC converters. Features :
. Directly connected electrode on ferrite core.
. Ideal inductors for DC-DC conversion.
. High power, High saturation inductors.
. With magnetic shield against radiation.
. Available on tape and reel for auto surface mounting.
Characteristics :
. Saturation Current(Isat):The current when the inductance becomes 30% lower than its initial value.(Ta=20℃)
. Temperature rise Current(Irms):The current when temperature of coil increases up to max ΔT=40℃.(Ta=20℃) or equivalent.
. Operating temperature : -40℃ to 105℃
1. Drawing
2. Environmental Conditions
- Storage temperature: -10 -- 40℃
- Ambient temperature: -40 -- 85℃
- Operating temperature: 130℃MAX
- relative humidity: 5%-95%
- Long-term durability test.
3. Process of winding
| Winding number | Winding name | Start pin position | End pin position | Wire & description | TS | Layer number of tape | Winding requirement |
| 1 | N1 | 6 | 4 | 2UEWF Φ0.2*1 | 80 | 2 | Tightly wind |
| 2 | N4 | 8 | 7 | TR Φ0.2*1 | 34 | 2 | The first layer wind tightly, the second layer wind sparsely |
| 3 | N2 | 1 | 2 | TR Φ0.2*1 | 13 | 2 | Wind equally a layer |
| 4 | N3 | 11 | 12 | TR Φ0.2*1 | 11 | 2 | Wind equally a layer |
4. Electrical Parameters
| Item | Unit | Test Terminal | Test Condition | MIN | NOR | MAX | Remark |
| Inductance Test | µH | 6-4 | 100KHz,0.3V, Ser | 540 | 570 | 600 | |
| Leakage Test | µH | 6-4 |
100KHz,0.3V, Ser (other windings short circus) |
/ | / | 60 | |
| Q Value | / | 6-4 | 100KHz,0.3V, Ser | 80 | / | / | |
| Direct Current Resistance | Ω | 6-4 | 25℃ | / | / | 1.8 | |
| mΩ | 1-2 | 25℃ | / | / | 340 | ||
| mΩ | 11-12 | 25℃ | / | / | 310 | ||
| mΩ | 8-7 | 25℃ | / | / | 750 | ||
| Resistance Strength | mA | Primary－Secondary | 3750Vac,60s | / | / | 1 | |
| mA | Primary－Core | 2500Vac,60s | / | / | 1 | ||
| mA | Secondary－Core | 2500Vac,60s | / | / | 1 | ||
| ARCING Test | V | / | / | / | / | / |
Arc pull test Fill in when there is a demand for the product |
| Insulation Resistance | MΩ | Np-Ns | 500Vdc | 100 | / | / | |
| Winding turns ratio | / | N1:N2:N3:N4 | 80:13:11:34 | NA | 20KHz,1V | NA | Here the circle-ratio is required to be an exact value. There is no minimum or maximum value |
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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