Magnetic core since 1995

Core Professional, Core International


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Trade Mark
SG-, HWR-, FA-, SU-, SE-, SM-, CD/XCD-Series; Customized dimensions also welcome.
Delivery time
Samples: 8~10 days; Batches: 8~30 days accordingly.
Payment term
TT or L/C


High quality CRGO steels with low iron-loss and high permeability in thickness of 0.05mm, 0.08mm, 0.1mm, 0.23mm, 0.27mm, 0.3mm and 0.35mm.



The two halves put together and come into a closed flux path as an open structure. So bobbin and core can be produced separately, afterward put the core in bobbin, and then the production time can be reduced.

All cores, unless otherwise state, are individually tested to the standard guarantee specifications. Special test conditions, when required, can be applied and guaranteed to suit customer's individual requirements.



Various specifications C core are widely used in 50Hz and 400Hz transformers, current transformers, reactors, chokes and other magnetic components of electronic equipment.

Specifications of Standard C Cores:


Sony Thomas

Currently, we are in need of a Transformer with input AC 115 VAC ,0.6A, 400 Hz.Output is a single winding with taps at 6.58 VAC, 7.27 VAC, 7.96 VAC.The output current rating is 7.5A. Total four C Cores used for the transformer construction. Can U Plz. let us know whether you can support us in developing this transformer ?.
2017-11-07 20:24:42


Hello, I am looking for Hi-B C cores (0.27 mm, M4 quality) HWR 50/32 and HWR 70/32. Are these available? Thanks
2017-07-31 02:25:01


Hello Paolo, thanks for your inquiry. The HWR50/32 and HWR70/32 are standard sizes that we've been produced a lot. We will contact you later soon by email for your more details. Johnny Zhou from NICORE.
2017-10-25 10:43:02


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2017-05-08 08:25:25


Please provide the drawing dimensions which tells the Notations used in dimension table.
2016-12-06 16:20:39

Edward Nina

I was wondering if I could get a sample drawing? The dimensions are stated but there is no mention of what it is in relation to. For example, is the D dimension the thickness?
2016-11-17 02:49:47
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