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The China EFD Single-Phase Horizontal High-Frequency Transformer produced by Haoer features a very low structural height, high transmission power, low leakage flux, and wide application range.
Specification: EFD15 / EFD20 / EFD25 / EFD30 / EFD40, etc.
1. The EFD transformers utilize flat ferrite cores, and their shape possesses unique structural advantages. The flat design of these transformers results in a smaller size in the height direction, effectively saving installation space. They are particularly suitable for applications in electronic devices with strict space requirements.
2. A multi-layer winding structure is typically employed to achieve excellent electromagnetic coupling and electrical performance. The windings are generally made of high-purity copper wire, which has low resistance and can reduce energy loss, thereby enhancing the efficiency of the transformer. Additionally, the design of multi-layer windings can be flexibly adjusted to vary the turns ratio according to different application requirements, enabling various voltage conversion functions.
3. Performance characteristics of EFD type transformer: Wide operating frequency range, high power density, high efficiency, and stable electrical performance.
4. The EFD type transformer is used in switching power supplies, inverters, medical electronic equipment, air purifiers, mosquito repellents and plasma circuits.
| 1. Operating frequency | 20 kHz - 500 kHz |
| 2. Output power | 3 - 100 W |
| 3. Operating temperature | -40°C to +125°C |
| 4. Storage temperature | -25°C to +85°C |
| 5. Storage humidity | 30% - 95% |
The EFD type transformer is used in switching power supplies, inverters, medical electronic equipment, air purifiers, mosquito repellents and plasma circuits.
| Model number | Number of needles | Size | FIG | ||||
| A | B | C | D | E | |||
| EFD-12 | 8 | 6 | 17 | 20 | 3 | 13.5 | 2 |
| EFD-15 | 10 | 7.3 | 18.2 | 21.35 | 2.5 | 15 | 1 |
| EFD-15 | 10 | 7.5 | 19.3 | 22.6 | 3 | 16.7 | 2 |
| EFD-20 | 10 | 9.4 | 25.3 | 27.7 | 3.75 | 21.7 | 2 |
| EFD-20 | 12 | 9.7 | 24 | 26.8 | 3 | 20 | 1 |
| EFD-25 | 10 | 13.4 | 29.7 | 35.4 | 5 | 25 | 2 |
| EFD-25 | 10 | 12.6 | 29.7 | 31.5 | 5 | 25 | 1 |
| EFD-30 | 12 | 12.6 | 31.6 | 35.3 | 5 | 30 | 2 |
With a strong industrial presence since 2008, Guangdong Haoer Electronics Co., Ltd. stands as a specialized producer of precision magnetic components. Our core products—high-frequency transformers, filters, and inductors—are integral to advanced applications in lighting, home appliances, photovoltaics, UPS, automotive systems, and network communications.
The company’s growth is marked by significant production capabilities: several manufacturing sites in Foshan, a workforce exceeding 1, 000, and an annual production volume of over 100 million units. Our investment in automation and precision testing, coupled with certifications such as CQC, UL, ISO 9000, and TS 16949, reflects our dedication to excellence.
Guided by the principles of innovation, quality leadership, and collaborative success, Haoer continues to strengthen its expertise and contribute to the evolving needs of the global electronics industry.
Little Bear, Delmar, Meishel, Dongling Weiyou, Yaxuel, Lianrui, Jiewei, Yingke, Yu Long, Tuohao
Core concept: Quality first, customer priority
Corporate culture
The company emphasizes teamwork, respects the individuality and working styles of its employees, and pursues (the content is incomplete).
Professional Experience
The leadership team is composed of experienced professionals in the industry, possessing extensive knowledge and skills.
Team growth
Offer various training, learning and development programs to help employees achieve both personal and team goals.
Professional Guarantee
We have professional equipment and technical support.
The small packages will be sent by courier, such as DHL, UPS, TNT, FedEx, etc. We can also arrange air or sea transportation according to your requirements.
Address
C3 2 -4 81 Xijiao Road, Ronggui Sub-district, Foshan City, 2-4/F, Building C3, Zhongjian Chuangkeyuan, China
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