Leave a Message

We will call you back soon!

Shenzhen Dowis Electronics Co.,Ltd Your message must be between 20-3,000 characters!

Shenzhen Dowis Electronics Co.,Ltd Please check your E-mail!

SUBMIT

More information facilitates better communication.

Mr.
  • Mr.
  • Mrs.
OK

Submitted successfully!

We will call you back soon!

OK

Leave a Message

We will call you back soon!

Shenzhen Dowis Electronics Co.,Ltd Your message must be between 20-3,000 characters!

Shenzhen Dowis Electronics Co.,Ltd Please check your E-mail!

SUBMIT
Please leave your correct email and detailed requirements.
OK
China HF Transformer manufacturer

Shenzhen Dowis Electronics Co.,Ltd

English
  • English
  • French
  • German
  • Italian
  • Russian
  • Spanish
  • Portuguese
  • Dutch
  • Greek
  • Japanese
  • Korean
  • Arabic
  • Hindi
  • Turkish
  • Indonesian
  • Vietnamese
  • Thai
  • Bengali
  • Persian
  • Polish
  • 中文
Request A Quote
  • Home
  • Products
    • HF Transformer
    • LF Transformer
    • Planar Power Transformer
    • Encapsulated Power Transformer
    • Shielded SMD Power Inductors
    • DIP Power Inductor
    • Common Mode Chokes
    • Common Mode Line Filter
    • SMD Power Inductor
    • Miniature Current Transformer
    • New Energy Magnetics
  • About Us
  • Factory Tour
  • Quality Control
  • Contact Us
  • News
Products
Home / Products / HF Transformer

ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply

ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply
ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply
Basic Information
Place of Origin: CN
Brand Name: Dowis
Certification: CE, UL, RoHs, ISO9001, 16949
Model Number: EF25, EFSeries
Minimum Order Quantity: 1000pcs
Packaging Details: Carton Box
Delivery Time: 3-4Weeks
Payment Terms: T/T, L/C
Get Best Price Contact Now Chat Now
  • Detail Information
  • Product Description
Features: High-temperature Resistant Model: DW5478A
Name: HF Transformer Certification: CE, UL, RoHs, ISO9001, 16949
Application: Suitable For A Wide Range Of Switching Power Supply/power Transformer/ LED Driver Transformer/current Transformer/distribution Transformer Origin: CN
High Light:

ISO9001 HF Transformer

,

Switching Power Supply HF Transformer

,

280uH HF Power Transformer

10KHz EF25 HF Transformer 280µH

 

Features:

1. High quality and Competitive price
2. Good after-sale service
3. High-temperature resistant
4. Supply samples free with the short delivery time
5. Suitable for a wide range of switching power supply/power transformer/ LED driver transformer/current transformer/distribution transformer

 

1. Drawing (Unit: mm)
ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply 0

 

2. Winding Method
ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply 1

 

 

 

3. Winding System Requires

Winding Retaining wall PIN Position WIRE&DESCRIPTION TS Winding Method Slot Position Insulation tape Tube Into the shaft way Direction
Pin1-5 side slot Pin6-9 side slot Start End Start End Tape Specification TS Start End
N1 / / (2) 5 2UEW-F,φ0.10mm×30 bars(Litz) 36 PIN1-5 side slot tightly wind for 5 layers+equally wind for 1 layer Between Pin1.2 Between Pin4.5 0.025×7mm 2.1 18L×10mm / Pin1 towards left front
N2 / / 3 4 2UEW-F,φ0.28mm×1 bars 4 PIN1-5 side slot tightly wind in the middle Between Pin2.3 Between Pin3,4 / / / /
N3 / / 9 7 2UEW-F,φ0.10mm×90 bars(Litz) 4 PIN6-9 side slot tightly wind, The inlet and outlet wires should be wrapped with 8 × 10mm high temperature adhesive tape for 1 layer Between Pin8.9 Between Pin7.8 / / / /
N4 / / 8 6 2UEW-F,φ0.10mm×90 bars(Litz) 4 PIN6-9side slot tightly wind, The inlet and outlet wires should be wrapped with 8 × 10mm high temperature adhesive tape for 1 layer Between Pin7.8 Between Pin6,7

0.025×7mm

(wrap)

1.1 / /

 

 

 

 

4. Electrical characteristics

Item Test Terminal Test Condition Standard Requirement Equipment  
Semi-finished products Finished Products QC  
Inductance Test 2 5 10KHz,0.1V 280uH±7% 280uH±9% 280uH±10% TH1062 or Equal  
Leakage Test 2 5

100KHz,0.1V

(short circuit Pin6+7+8+9)

90uH max 90uH max 90uH max  
Capacitance test Pin2+3+4+5 Pin6+7+8+9 100KHz,0.1V 9.0pF max 9.0pF max 9.0pF max  
Direct Currency Resistance 2 5 DC 25℃ 160mΩ max 160mΩ max 160mΩ max TH2511 or Equal  
3 4   88mΩ max 88mΩ max 88mΩ max  
8 6   6.8mΩ max 6.8mΩ max 6.8mΩ max  
9 7   6.1mΩ max 6.1mΩ max 6.1mΩ max  
TS Test All winding 20KHz,1V 36:4:4:4(±0.2Ts) CH3250 or Equal  
Short circuit test Pin6-7  
Voltage Test Pin2+5 to Pin3+4 AC-50Hz-3mA 1500V,2 Sec 1500V,2 Sec 1500V,5 Sec CJ2670 or Equal  
Pin9+7 to pin8+6 AC-50Hz-3mA 500V,2 Sec 500V,2 Sec 500V,5 Sec  
Pri to Core  AC-50Hz-3mA 1500V,2 Sec 1600V,2 Sec 1500V,5 Sec  
Pri to Sec AC-50Hz-3mA 4000V,2 Sec 4100V,2 Sec 4000V,5 Sec  
Sec to Core AC-50Hz-3mA 2000V,2 Sec 2100V,2 Sec 2000V,5 Sec  

 

 


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 supplier. We look forward to cooperating with you.

 

Tag:

High Frequency EPC Transformer UL,

OEM ODM EE4220 Transformer,

High Frequency Transformer 100W To 3000W

Contact Details
martinliao

Phone Number : +8618928454332

WhatsApp : +85264885839

More HF Transformer
  • ER2518 High Frequency Transformer
    Show Details

    ER2518 High Frequency Transformer

    Contact Now
  • EF32 High Frequency Transformer
    Show Details

    EF32 High Frequency Transformer

    Contact Now
  • EFD25 Customized HF Transformer
    Show Details

    EFD25 Customized HF Transformer

    Contact Now
  • EPC19 240V 12V 19V 50W 70W HF Transformer High Frequency Current Customized
    Show Details

    EPC19 240V 12V 19V 50W 70W HF Transformer High Frequency Current Customized

    Contact Now
Categories
  • HF Transformer
  • LF Transformer
  • Planar Power Transformer
  • Encapsulated Power Transformer
Factory Tour
  • Production Line
  • OEM/ODM
  • R&D
About Us
  • Introduction
  • History
  • Service
  • Our Team
Contact Us
Shenzhen Dowis Electronics Co.,Ltd
B Blding,Huangpu Runhe Industrial Park, Zhentou Road,Huangpu Community, Shajing street, Bao'An District Shenzhen P.R.C
86-755-27220476-7 mkt05@szdowis.com
  • Privacy Policy
  • Sitemap
  • Mobile Site
China Good Quality HF Transformer Supplier. © 2021 - 2022 dowis.com.cn. All Rights Reserved.