EFD20 High-Frequency Transformer Manufacturer Customized DW6204
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. APPEARANCE & DIMENSIONS (UNIT: MM)

 
2. Environmental Conditions
 

• storage temperature: -40-85℃
• ambient temperature: -40 -- 85℃
• working temperature: 110℃ MAX
• relative humidity: 5%-95%
• Long-term durability experiment.

 
 
3.

• t    Technical Requirement

  Winding order	Winding Name	Start Pin Position	End Pin Position	Wire & Description	TS		Winding Requirement
  1	N1	9	8	TEX-E Φ0.2*1	22	1	Sparsely Wind a layer
  2	N4	12	11	TEX-E Φ0.2*1	9	1	Two wires duplex and Spars[‘wind 1 layer
  3	N5	14	13	TEX-E Φ0.2*1	9
  4	N2	7	A	TEX-E Φ0.3*1	11	1	Two wires duplex and Sparsely wind 1 layer
  5	N3	B	C	TEX-E Φ0.3*1	7
  6	N6	4	5	TEX-E Φ0.2*1	10	2	Three wires duplex and tightly wind 1 layer
  7	N7	3	4	TEX-E Φ0.2*1	10
  8	N8	2	1	TEX-E Φ0.2*1	10

   
  
  4. Electrical Performance

  ITEM	UNIT	TEST TERMINAL	TEST CONDITION	MIN	NOR	MAX
  Inductance Value	µH	9-8	100KHz,0.3V, Ser	50	55	60
  Leakage	µH	9-8	100KHz,0.3V, Ser	/	/	6
  Q Value	/	9-8	100KHz,0.3V, Ser	65	/	/
  The Electric Strength	mA	Primary—Secondary	3750Vac,60s	/	/	1
  	mA	Primary—Core	2000Vac,60s	/	/	1
  	mA	Secondary—Core	2000Vac,60s	/	/	1
  Direct Current Resistance	mΩ	9-8	25℃	/	/	510
  	mΩ	12-11	25℃	/	/	240
  	mΩ	14-13	25℃	/	/	240
  	mΩ	7-A	25℃	/	/	145
  	mΩ	B-C	25℃	/	/	100
  	mΩ	4-5	25℃	/	/	280
  	mΩ	3-4	25℃	/	/	280
  	mΩ	2-1	25℃	/	/	280
  Insulation Resistance	MΩ	Np-Ns	500Vdc	100	/	/