Wire-wound inductor WL80125

magneticferrous coreEMI

Product Overview
Sendust toroidal inductor WL80125 is designed for compact energy storage and current filtering in power electronic systems. Constructed with a Sendust (Fe-Si-Al) toroidal core and enameled copper winding, it provides low core loss, high saturation flux density and stable inductance across temperature for medium to high current applications.

Main Uses

• Switching power supplies
• DC-DC converters
• Industrial control systems and power equipment
• Solar inverters and renewable energy systems
• EMI filters and noise suppression
• Automotive electronics and battery chargers
• UPS and other power conversion systems

Product Details
The WL80125 features a closed magnetic path provided by the toroidal core, minimizing magnetic leakage. Typical construction includes a Sendust (Fe-Si-Al) powdered-metal toroid and precision-wound enameled copper conductor. The design delivers good DC bias performance, low losses at medium/high switching frequencies and mechanical stability suitable for industrial environments.

Typical Parameters

• Core material: Sendust (Fe-Si-Al)
• Inductance range: 1 µH – 10 mH
• Rated current: 1 A – 50 A (typical)
• Saturation current: up to 80 A (typical)
• Operating frequency: 10 kHz – 300 kHz (typical)
• Operating temperature: -40°C to +125°C
• Insulation/wire: enameled copper wire
• Core shape: toroidal

Advantages

• High saturation flux density for high-current handling
• Low core loss at medium/high switching frequencies
• Stable inductance over a wide temperature range
• Good DC bias performance and mechanical durability
• Reduced magnetic leakage and effective EMI suppression

Disadvantages

• Larger and heavier than some ferrite alternatives for equivalent inductance
• Material and precision winding can increase manufacturing cost

Applications & Implementation Notes
Suitable as power inductors and EMI chokes in switching supplies, DC-DC converters, solar inverters, motor drives and automotive power modules. When selecting WL80125, consider inductance value, rated and saturation current, DC resistance (DCR), core size, operating frequency and thermal conditions to ensure long-term stability and compliance with system requirements.

Technical specifications

• Core material: Sendust (Fe-Si-Al)
• Inductance: 1 µH – 10 mH
• Rated current: 1 A – 50 A
• Saturation current: up to 80 A
• Frequency range: 10 kHz – 300 kHz
• Temperature range: -40°C to +125°C
• Winding: enameled copper wire
• Core shape: toroidal (closed magnetic path)