FERROXCUBE  E42/21/15-3C90  Transformer Cores, E42, 3C90, 97 mm, 178 mm²

FERROXCUBE E42/21/15-3C90
Technical Data Sheet (76.95KB) EN See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The E42/21/15-3C90 is a Transformer Core made with material grade of 3C90. The shape of E core is derived from the classical iron sheet lamination core. For the original E range in fact the dimensions of the existing lamination range were taken so that already commercially available coil formers and mounting hardware could be used. The former EF range has been optimized for the use of ferrite as a core material. Cross sections were rearranged resulting in a homogeneous magnetic flux density in the core and more space for the windings. Main use is as power transformer or chokes in SMPS. E core has a simple shape and can therefore be produced more economically than more complicated cores. A drawback is the rectangular cross-section of the centre pole which makes it more difficult to wind, especially with heavy wires. Also the structure of the core is rather open resulting in stray flux sometimes causing interference problems.
  • Square cross-section, not easy for heavy wires
  • Large effective ferrite area
  • Low magnetic self shielding
  • 0.548Σl/A(mm⁻¹) Core factor


Product Information

Core Type:
Core Size:
For Use With:
Core Material Grade:
Effective Magnetic Path Length:
Ae Effective Cross Section Area:
Inductance Factor Al:
Product Range:
Accessory Type:
Ferrite Core
No SVHC (17-Dec-2015)
Material Grade:

Find similar products  grouped by common attribute


  • Industrial;
  • Power Management

Legislation and Environmental

Country of Origin:

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Tariff No:
Weight (kg):

Similar Products

Find products functionally similar to this one. Select one of the following links, and you will be taken to a product group page that presents all products in this category that share the given attribute.