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Add : Room 701, Building A1, No. 55 Runfa Road, Jiangning District, Nanjing, China
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The ER11.5 5+5 High Frequency Transformer is designed for compact switching power supplies and isolated DC-DC converter systems requiring stable high-frequency operation, reliable electrical isolation, and efficient magnetic energy transfer.
Featuring an ER11.5 ferrite core structure with a 5+5 pin configuration, the transformer supports compact PCB layouts and flexible winding arrangements for modern low-power electronic applications.
Its optimized magnetic design provides balanced electrical performance and thermal stability while maintaining a small footprint suitable for miniaturized power supply systems.
Customized turns ratios, winding structures, insulation configurations, and output specifications are available according to application requirements.
Ultra-compact ER11 core design – ideal for space-constrained applications and miniaturized power systems
High-frequency efficiency (20kHz–300kHz) – optimized for SMPS with low core loss and high energy transfer efficiency
Low temperature rise & stable performance – ensures long-term reliability under continuous operation
Excellent insulation & safety compliance – suitable for reinforced insulation design in global markets
Flexible customization – supports multi-winding, pin configuration, and electrical parameter tailoring
Switching Power Supplies (SMPS)
AC/DC & DC/DC converters
LED drivers & lighting systems
Consumer electronics (chargers, adapters, IoT devices)
Communication equipment & data transmission modules
Technical Specifications
| Item | Specifications |
| Product Series | ER-type transformer series |
| Core Size | Diverse core size options |
| Operating Frequency | Broad high-frequency range: 15kHz to over 1.2MHz |
| Divided bands: | |
| 15kHz-60kHz | |
| 60kHz-120kHz | |
| 120kHz-600kHz | |
| 600kHz-1.2MHz | |
| Over 12MHz | |
| Power Coverage | Less than 8W up to 600W-1200W |
| Specific intervals: | |
| 8W-15W | |
| 15W-25W | |
| 25W-60W | |
| 60W-120W | |
| 120W-250W | |
| 250W-600W | |
| Typical Parameters | Operating frequency: 20kHz-500kHz |
| Output power: 80W-200W | |
| Operating Temperature | -40℃ to +125℃ |
| Product Functions | Flyback transformer, drive transformer, control transformer, inverter transformer, SMPS transformer |
| Also can be used as high-current inductor or isolated signal transformer | |
| Typical Applications | DC-DC converters, drive transformers, notebook power supplies, inverter power supplies, UPS, communication power supplies |
| Bobbin Style | Traditional bobbin styles |
| Customization & Service | All design parameters can be strictly customized according to customer requirements or industry specifications |
| Fully support global ODM/OEM cooperation |
