:: Custom Coils

High Voltage Transformers
Switchmode Transformers

Toroidal Transformers

DC Igniters

Trigger Pulse Transformers

Power Transformers

Antennas and Air Coils

High Current Inductors

Custom Manufacturing

Hydrogen Coils

Specialized Transformers and Inductors for Downhole Magnetics

As a custom transformer and inductor manufacturer for 40+ years, we have built downhole magnetics for a variety of downhole customers..

We are experts in designing downhole magnetics
that operate in extreme environments. Our custom magnetics are designed to meet your specifications on temperature, size and shock vibration.

Today, most of our downhole designs are for 200C and 220C although we have some that operate at 240C temperatures as well. As the downhole market continues to drill deeper, the operating temperatures have continued to increase.

Let our engineers quote your next downhole magnetics project for you!

The downhole industry, as with the aircraft industry, requires high reliability under extreme environments as a key element of the design. Custom Coils regularly delivers to customers who expect zero defects found. Materials used in downhole designs are very critical. Using the proper materials for the specific operating temperatures is imperative.

Hi-Temp Cores Powdered Iron (200C) MPP (200C) Ferrite (300C)	Small Geometries Toroids down to 4mm EE5 & ER9.5 E-cores Potcores down to 7x4mm

Hi-Temp Wires MW35-C (200C) ML16 (240C) Flying Leads Teflon type E	Insulation Materials Kapton (180C) Teflon (200C) Nomex (220C) Teflon/GC (260C)

Solder Types Lead-free (230C) HMP (300C)	Compounds Ripley’s 468-2FC (220C) Dolph’s BC346A (220C) RTV-xx Hi-Temp (260C)


MWD (Measurements While Drilling)	Wireline
LWD (Logging While Drilling)	Completion Equipment
Rotary Steerable Motors

Testimonials