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ER11.5(5+5) High Frequency Transformers

ER11.5 (5+5) High Frequency Transformer is a compact ferrite-core transformer specifically designed for high-frequency switching power supply applications. Featuring a balanced 5+5 winding configuration, it provides excellent electrical isolation, stable voltage conversion, and efficient energy transfer.

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Core Advantages

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

Typical Applications

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

屏幕截图 2025-10-23 154754

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
Typical Parameters	Output power: 80W-200W
Operating Temperature	-40℃ to +125℃
Product Functions	Flyback transformer, drive transformer, control transformer, inverter transformer, SMPS transformer
Product Functions	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
Customization & Service	Fully support global ODM/OEM cooperation