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| Categories | LF Transformer | 
|---|---|
| Brand Name: | Dowis | 
| Model Number: | EEL1625, EEL series | 
| Certification: | CE, UL, RoHs, ISO9001, 16949 | 
| Place of Origin: | CN | 
| MOQ: | 1000pcs | 
| Payment Terms: | T/T, L/C | 
| Delivery Time: | 3-4Weeks | 
| Packaging Details: | Carton Box | 
| Model: | DW4959 | 
| Size: | 18.5*31.5*17.5mm | 
| Type: | EEL | 
| Name: | Low Frequency Transformer | 
| Pin: | 4 | 
| Frequency: | 1KHz -500KHz | 
EE1625 Low Frequency Transformer Manufacturer Customized DW4959
Product Advantages
EE Series Transformer are features with the characteristics of wide
range operation voltage and high working frequency, large output
power, thermal stability.
PQ Series Transformer are features with the characteristics of
strong anti-interference, small distributed capacitance, high
impedance, low transmission attenuation and low temperature.
ETD Series Transformer are features with the characteristics of
high operation voltage and large output power, thermal stability.
Application
* Audio / Video Amplifier
* Power Supply
* Electronic equipment
* Automatic Door
Characteristic
* Being protected by temperature switch or fuse wire.
* Easy to install and integrate into system
* Easy to modify to achieve custom requirement
1. DRAWING (UNIT: MM)
2. PROCESS OF WINDING
| Winding | Retaining Wall | PIN Position | Wire & Description | TS | Winding Method | Groove Position | Insulation Tape | Tube | Method of entering Axle | Direction of entering Axle | |||||
| Pin Side | Top | Start | End | Start | End | Tape Type | TS | Start | End | ||||||
| N1 | / | / | -3 | -2 | TIW-B , φ0.15mm×1 bar | 94 | Tightly wind 2 layers | Between Pin3 & 4 | Between Pin2 & 3 | 18.0mm | 1.1 | 26L×15mm | 26L×15mm | Pin1 | front | 
| N2 | / | / | -8 | -7 | TIW-B , φ0.50mm×1 bar | 18 | Tightly and duplex wind 1 layer | Between Pin7 & 8 | Pin7 edge groove | 18.0mm | 2.1 | 21L×15mm | 21L×15mm | ||
| N3 | -9 | -10 | TIW-B , φ0.15mm×1 bar | 10 | Between Pin8 & 9 | Between Pin9 & 10 | 26L×15mm | 26L×15mm | |||||||
| N4 | / | / | -2 | -1 | TIW-B , φ0.15mm×1 bar | 46 | Tightly wind 1 layer | Between Pin1 & 2 | Pin1 edge groove | 18.0mm | 1.1 | 26L×15mm | 26L×15mm | ||
| N5 | 2L(t0.28) | / | -5 | -6 | TIW-B , φ0.15mm×1 bar | 22 | Tightly and duplex wind 1 layer | Between Pin4 & 5 | Pin6 edge groove | 18.0mm | 2.1 | 26L×15mm | 26L×15mm | ||
| N6 | (A) | (B) | 2UEW-F, φ0.40mm×1 bar | 8 | Top | Top | 23L×98mm | 23L×88mm | |||||||
| (Tranparency) | (black) | ||||||||||||||
3. CONSTRUCTION DIAGRAM
| Item | Test Terminal | Test Condition | Semi-finished goods | Equipment | |||
| Semi-finished goods | Manufactured goods | QC Exam | |||||
| Inductance Test | 3 | 1 | 10KHz,0.3V | 450uH±3% | 450uH±5.5% | 450uH±6% | TH1062 or equal | 
| Leakage Test | 3 | 1 | 10KHz,0.3V | 40uH max | 40uH max | 40uH max | TH1062 or equal | 
| (short connect to other Pin) | |||||||
| Direct Current Resistance | 3 | 1 | DC 25℃ | 5.0 Ω max | 5.0 Ω max | 5.0 Ω max | TH2511 or equal | 
| 8 | 7 | 70 mΩ max | 70 mΩ max | 70 mΩ max | |||
| 9 | 10 | 400 mΩ max | 400 mΩ max | 400 mΩ max | |||
| 5 | 6 | 1045 mΩ max | 1045 mΩ max | 1045 mΩ max | |||
| A | B | 85 mΩ max | 85 mΩ max | 85 mΩ max | |||
| Turns Test | All Winding | 20KHz,1V | 140:18:10:22:8(±0.2Ts) | CH3250 or equal | |||
| High-Voltage Insulation Test | Primary——Secondary | AC-50Hz-5mA | 3500V,2 Sec | 4000V,2 Sec | 3500V, 3 Sec | CJ2670 or equal | |
| Primary & Secondary to Core | AC-50Hz-5mA | 1800V,2 Sec | 2000V,2 Sec | 1800V, 3 Sec | |||
| PIN1---PIN6,A | AC-50Hz-5mA | 500V,2 Sec | 800V,2 Sec | 500V,2 Sec | |||
| A---PIN6 | AC-50Hz-5mA | 500V,2 Sec | 800V,2 Sec | 500V,2 Sec | |||
| PIN7---PIN10 | AC-50Hz-5mA | 500V,2 Sec | 800V,2 Sec | 500V,2 Sec | |||
| ARC Test | Primary——Secondary | AC-50Hz-5mA | 4000±10V,3 Sec 仪器打开 ARC:6等级 (9.9mA) | CH7410 or equal | |||
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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