DK15-02 | Brown Insulating Epoxy resin binder

Harmonization Code : 3907.30.00.90 |   Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms : Epoxide resins : Other
Main features
  • For powdered iron core or pot-core type reactors or induction devices
  • Blow coating and Fluidized bed application
  • Brown, insulating, binding resin

Product Description

DK15-02 Brown is an epoxy-based coating powder developed as an epoxy resin binder when making powdered iron core or pot-core type reactors or induction devices. It is used for electrical insulation of toroids, current transformers, and magnetic and powder cores.  As a toroid or current transformer coating, it offers cut-through temperature resistance with good edge coverage and is UL-recognized for 130ºC operating temperature.

Although DK15-02 Brown was designed to be applied via a blow coating process, it can also be applied via a standard fluidized bed process in most applications.


Application Ideas for DK15-02 Brown

  • Storage chokes for switch-mode power supplies
  • Storage chokes for DC regulators and power factor controllers
  • Commutation chokes for feedback-capable frequency inverters
  • Output chokes for traction inverters
  • dU/dt limiting chokes
Product Family
EU Bag Drum (113.4kgs)

No longer available

This product is no longer available or will become obsolete soon. Please contact us so we can recommend an alternative product.

Technical Specifications

General Properties
Chemistry Type Epoxy
The color
Shelf Life
Shelf Life
Shelf life is the amount of time after manufacturing that a product is guaranteed to retain its properties.

It differs vastly per product and it is based on temperature and storage conditions.

The properties can be guaranteed for the temperature and time range indicated on the TDS since those are the ones tested to be the best for the product.
Shelf Life @ 15°C 12 months
Other Properties
RoHS Compliant
RoHS Compliant
RoHS is a product level compliance based on a European Union Directive which restricts the Use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS).

Products compliant with this directive do not exceed the allowable amounts of the following restricted materials: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), with some limited exemptions

Additional Information

What is a Powdered Iron Core?

A powdered iron core is a magnetic material that has an inherently distributed air gap. Though it is made almost entirely of iron, it is mixed with an epoxy binder (such as the DK15-02 Brown) and pressed with a very large pressure into the final core shape. The distributed air gap allows the core to store higher levels of magnetic flux when compared to other magnetic materials such as ferrites. This characteristic allows a higher DC current level to flow through the inductor before the inductor saturates.

What is a Pot Core?

A pot core is usually made of ferrite or similar magnetic material and is used for inductors and transformers. The shape of a pot core is round with an internal hollow that almost completely encloses the coil. Usually, a pot core is made in two halves which fit together around a coil former (bobbin). This design of core has a shielding effect, preventing radiation and reducing electromagnetic interference.

Application of the Epoxy Binder Resin

Once the iron, ferrite or other magnetic metal cores are pressed into the desired shape, using the DK15-02 Brown Epoxy Binder Resin, the whole part is cured via a baking process.