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Home / Products / HF Transformer

ER28 High Frequency Transformer Manufacture Customized DW3334

ER28 High Frequency Transformer Manufacture Customized DW3334
ER28 High Frequency Transformer Manufacture Customized DW3334 ER28 High Frequency Transformer Manufacture Customized DW3334 ER28 High Frequency Transformer Manufacture Customized DW3334
Basic Information
Place of Origin: CN
Brand Name: Dowis
Certification: CE, UL, RoHs, ISO9001, 16949
Model Number: ER28, ER series
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
  • Product Description

ER28 High-Frequency Transformer Manufacturer Customized DW3334

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)
ER28 High Frequency Transformer Manufacture Customized DW3334 0
 

2. PROCESS OF WINDING
 

Winding Retaining Wall Foot Position WIre & Description Ts Winding Method Groove Position Insulation Tape Tube Method of entering Axle Method of entering Axle
Pin7-12 side Pin1-6 side Start End Start End Tape Type TS Start End
N1 / / -1 -6 TIW-3,φ0.50 mm×1 bar 24 Equally wind a layer Between Pin1 & 2 Between Pin5 & 6 22.0mm (Tea clour) 1.1 21L×17mm 21L×17mm Pin1-6 towards front
E1 4mm×1Ts 4mm×1Ts -4 / Lamination copper foil t0.05*W12*L43mm 0.9 In the middle Between Pin3 & 4 / 22.0mm (light yellow) 3.1 28L×15mm /
N2 / / -10 -9 TIW-3,φ0.50 mm×1 bar 2 Tightly wind next to PIN7-12 Between Pin9 &10 Bet ween Pin9 & 10 22.0mm (light yellow) 3.1 21L×17mm 21L×17mm
N3
/ / (7,8) (11,12) Lamination copper foil t0.15*W19*L265mm 5 In the middle Between Pin7 & 8-8 & 9 Between Pin10 &11-11 & 12 16L×15mm×2 bar 16L×15mm×2 bar
E2 4mm×1Ts 4mm×1Ts -4 / Lamination copper foil t0.05*W12*L60mm 0.9 In the middle Between / 22.0mm (tea clour) 1.1 28L×15mm /
Pin3 & 4
N4 / / -6 -3 TIW-3,φ0.50 mm×1 bar 24 Equally wind a layer Between Pin5 & 6 Between Pin2 & 3 22.0mm (light yellow) 3.1 21L×17mm 21L×17mm



3. ELECTRICAL CHARACTERISTICS
 

Item Test Terminal Test Condition standard request Equipment
Semi-finished goods Manufactured goods QC Exam
Inductance Test 1 3 100KHz,0.3V 2.7~3.4mH 2.41~3.59mH 2.4~3.6mH TH1062 or Equal
Leakage Test 1 3 100KHz,0.3V 12uH Max 12uH Max 12uH Max
( short circus to other Pin)
Q Value 1 3 100KHz,0.3V 80Min 80Min 80Min
Direct Current Resistance 1 3 DC 25℃ 285mΩ max 285mΩ max 285mΩ max TH2511 or Equal
  10 9 12mΩ max 12mΩ max 12mΩ max
  7,8 11,12 4mΩ max 4mΩ max 4mΩ max
Turns Test All Winding 20KHz,1V 48:2:5(±0.2Ts) CH3250 or Equal
Short Circus Test Pin8~9
High-Voltage Insulation Test Pin1+3对 Pin7+9+10+12 -50Hz-1mA 3750Vac,2 Sec 4500Vac,2 Sec 3750Vac, 60 Sec
All Pin to Core 2200Vac,2 Sec 2600Vac,2 Sec 2200Vac, 60 Sec CJ2670 or Equal
Pin7+8 to Pin9+10 500Vac,2 Sec 500Vac,2 Sec 500Vac, 60 Sec

 

 

Tag:

High Frequency EPC Transformer UL,

OEM ODM EE4220 Transformer,

High Frequency Transformer 100W To 3000W

Contact Details
martinliao

Phone Number : +8618928454332

WhatsApp : +85264885839

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