Nanocrystalline toroidal core 13.5×7.5×4.5 mm
13.5×7.5×4.5 mm nanocrystalline toroidal core, Blue colored Powder Coating.
CCNT-013P5-007P5-004P5-LFBL is a 13.5×7.5×4.5 mm nanocrystalline toroidal core with Blue powder coating. Bare size is 13.5×7.5×4.5 mm. Finished (coated) size is 14.5×6.7×5.4 mm.
Former part number: CCNT-014-007-007-LFBL
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Request QuoteTechnical Specifications
Bare core dimensions
Cased / finished dimensions
Magnetic properties
AL is one turn through the window (Kelvin clips) at 0.3 V. It is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores.
Finish and handling
Environmental
Product photos
Applications and selection
Recommended usage
- compact current sensing
- small transformers
- prototype magnetics
DIY & R&D usage
- DIY current-sensing builds
- benchtop transformer prototyping
- hobbyist magnetics experiments
Technical applications
- compact current sensing (powder-coated LF toroid)
- small transformers (powder-coated LF toroid)
- prototype magnetics (powder-coated LF toroid)
When to choose this size
Choose CCNT-013P5-007P5-004P5-LFBL when you need this 13.5×7.5×4.5 mm powder-coated toroid. Use the bare dimensions for the magnetic path and the finished inner diameter (6.7 mm) for winding clearance.
Winding notes
Magnetic calculations should use the bare 13.5×7.5×4.5 mm geometry (Ae 0.11 cm², Le 3.3 cm, stacking factor 0.82). AL is one turn through the window (Kelvin clips) at 0.3 V: 15 µH at 1 kHz, 9 µH at 10 kHz, and 1.5 µH at 100 kHz. This is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores. Size the winding to the finished ID 6.7 mm, not the 7.5 mm bare ID. Saturation is 1.25 T. Core continuous temperature is -40°C to +150°C. Powder-coat temperature class is not published.
Related application guides
Frequently asked questions
Are the stated dimensions bare or finished?
The size in the product name is the bare core (13.5×7.5×4.5 mm). Finished coated size is 14.5×6.7×5.4 mm.
How was AL measured?
One turn: Kelvin clips through the window at 0.3 V. AL is 15 µH at 1 kHz, 9 µH at 10 kHz, and 1.5 µH at 100 kHz. This is not a 2 mT small-signal AL. At 1 kHz this drive saturates the smaller cores. Verify inductance on the wound part.
Where is a core this size used?
This 13.5×7.5×4.5 mm powder-coated toroid is a miniature core for compact current sensing and small transformers. The 6.7 mm finished window fits a single small conductor or a few turns of fine wire, which is the usual opening for PCB current sensors, miniature current transformers, and small pulse or gate-drive transformers in tight enclosures.
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