To supply high-quality, high-performance electronic components, TOHO ZINC has established an integrated structure linking all stages—from the development of magnetic materials to final products with quality control, technical services and marketing—by leveraging its strengths as a manufacturer of metallic raw materials.
Our reputation for dependability is based not only on capacity of supply, but also on our ability to meet the needs of our customers through rapid product development and short lead times.
We also provide technical support backed by our integrated manufacturing structure.
Recent years have seen a growing shift to eco-products.
In keeping with this trend, we will work to ensure that our manufacturing activities remain environmentally friendly, including the development of lighter, more compact products and the contribution of efficient power supplies to reduce energy consumption.
TOHO ZINC was among the first Japanese companies to establish offshore operations in response to market globalization. Today we operate production sites in China and Vietnam and are building an Asia-wide supply network.

Products

Core material: Iron powder core

Appearance	Series	Applications	Features	Data PDF
	SK Toroidal Series	Normal mode noise suppression Output choke coil	Quality controlled by integrated manufacturing

Core material : Fe-Al-Si based powder core

Appearance	Series	Applications	Features	Data PDF
	HK Toroidal Series	Output choke coil for high-frequency switch mode power supply	Excellent frequency characteristic For over 100kHz switch mode Quality controlled by integrated manufacturing
	HK BS Toroidal Series	Output choke coil for large-current circuit PFC circuit	Downsizing compared to conventional material by improved DC bias characteristics
	HK EE Series	Output choke coil for high-frequency switch mode power supply Multiple-circuit output choke coil PFC circuit Flyback transformers	High inductance and / or multiple circuit use by multi-pin type bobbin
	HK EER Series	Multiple-circuit output choke coil PFC circuit Choke coil for Hybrid Vehicle	For large current application by edgewise wound coil
	HK C Series	Output choke coil PFC circuit AC reactor	Coil for medium ~ large current circuit. Machine winding enable the mass-production. Excellent DC bias characteristics with a new magnetic materials
	HK High Power Series	For high-power inverter (ex. air conditioner, photovoltaic generation) And other high-power switching mode circuit. Output choke coil for large-current circuit	Suitable for output choke coil for high-power inverter / switch mode power supply
	HK F Series	Output choke coil for switch mode power supply Choke coil with a large swing characteristics.	Suitable for power supply which required downsizing / high efficiency
	Baces	For anti-vibration devices	Base attached to coils
	Dust Drum Series	Output choke coil for large-current and low-voltage DC / DC POL, Automotive electronics	New developed insulated metal powder make possible to eliminate the use of bobbin, and which achieve downsize of coil. Excel at temperature characteristics

Core material : Amorphous powder core

Appearance	Series	Applications	Features	Data PDF
	HM Toroidal Series	Output choke coil PFC circuit	Adopt an amorphous material which are most low-loss among metal powder core. For increasing in efficiency of circuit

Core material : Ferrite core

Appearance	Series	Applications	Features	Data PDF
	FK Toroidal Series	Common mode noise suppression Suitable for preventing the malfunction on all types of electronic devices	Common mode noise suppression coil with excellent frequency characteristic / small size / low price
	FK Y Series	3-phase common mode noise suppression	3-phase power line common mode noise filter for industrial equipment

Applications

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  Automotive electronics
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  Office Automation equipment
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  Industrial equipment