
Size marking on the case is the bare core dimension (OD × ID × H), not the cased or finished size.
Nanocrystalline toroidal core 65×55×10 mm
65×55×10 mm nanocrystalline toroidal core, Black PBT Class B 130C.
CCNT-065-055-010-STBK is a 65×55×10 mm nanocrystalline toroidal core with Black PBT Class B 130C.
Former part number: CCNT-062-055-010-STBK
In stock
$16.381 piece
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Volume pricing
Online packs are $10.00 minimum. Buy packs totaling under 50 pieces. 50+ is quoted.
| Pack / qty | Unit price | How to buy |
|---|---|---|
| 1 piece | $16.38 | Buy online |
| Pack of 3 | $15.56 | Buy online |
| Pack of 5 | $14.74 | Buy online |
| Pack of 10 | $13.10 | Buy online |
| 50+ pieces | Quoted | Request quote |
Technical Specifications
Bare core dimensions
Cased / finished dimensions
Magnetic properties
Finish and handling
Environmental
Product photos

Applications and selection
Recommended usage
- current transformers
- EMI chokes
- pulse transformers
DIY & R&D usage
- DIY current-transformer and choke winding
- benchtop filter tests
Technical applications
- low-current transformers
- common-mode chokes
- pulse transformers
When to choose this size
Choose CCNT-065-055-010-STBK when you need this 65×55×10 mm toroidal core. Use the bare dimensions for the magnetic path and the finished dimensions, when published, for winding clearance.
Winding notes
Magnetic calculations should use the bare 65×55×10 mm geometry. AL, Ae, and Le were not measured for this core. Saturation is 1.25 T.
Related application guides
Frequently asked questions
Are the stated dimensions bare or finished?
The size in the product name is the bare core. Finished dimensions are listed separately when they were measured.
Where is a core this size used?
This 65×55×10 mm cased toroid is a thin-wall, wide-window core for current transformers, common-mode chokes, and pulse transformers. The 52 mm cased window lets a cable through as a single-turn primary while the 13.5 mm cased height stays short.
What finish is on this core?
This core is finished with Black PBT Class B 130C.
Need this core for your application?
Get pricing, availability, and winding support for CCNT-065-055-010-STBK.