Custom Inductors & Transformers

Ferrite, silicon-iron, and powdered iron cores. 5 to 45 AWG. 20 to 2,500 turns. RoHS compliant.

Toroidal inductor on circuit board

What We Build

Toroidal Inductors

Ferrite and silicon-iron cores, 0.8" to 2.25" outer diameter

Bobbin-Wound Coils

5 to 45 AWG copper and nickel wire

Custom Transformers

20 to 2,500 turns, ±5% to ±15% DCR tolerance

All RoHS compliant. All lead-free.

Various custom inductors and transformers
1 Point of contact, start to finish
1 Day Response time on new inquiries
1K–100K Per production run

Currently in Production

Supplying NK Technologies, San Jose

NK Technologies manufactures current sensors for industrial power monitoring. We've delivered over 150,000 cores to NK across six product lines since April 2025. Zero rejected lots.

Toroidal inductor close-up with green enamel wire

Have a project? Let's talk.

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