Nanocrystalline magnetic cores Acal BFi kOr
- Technology
- Nanocrystalline cores
- Partner
- Acal BFi kOr
Nanocrystalline ribbon is the standard core material for power components, mainly transformers for 1 – 80kHz and broad-band Common Mode Chokes (CMC).
The core’s key features include high saturation induction (1,2 – 1,7 T), low core losses, and the possibility to tailor core shapes and magnetic properties. A wide variety of designs such as toroid, oval, rectangular cores, or blocks up to strips can be produced from the ribbon material without complex tools.
Permeabilities in the wide range from 4000 to 250.000 can be achieved without cuts and gaps. Many mechanical designs for shaping and fixing such as plastic or metal housings (cases), epoxy coating, or epoxy impregnation complete the flexible options.
Range features
A high level overview of what this range offers
- Space-saving designs due to saturation induction 1,2 – 1,7T, which can be used for pure AC operation due to the low losses up to a few 10kHz
- Adjustable magnetic properties: for F-loop (low remanence) initial permeabilities of 4000 – 250.000
- Long-term stable up to 120 – 200°C depending on properties and operational conditions
- Standard sizes for toroids (in cases) and cut cores available
- Cost-efficient bespoke designs, sizes, magnetic properties even for small quantities
Downloads
for Nanocrystalline magnetic cores Acal BFi kOr
| kOr 118 | kOr120 | kOr 120HF | kOr 122 | kOr 140 | kOr 140HF | kOr 170 | |
|---|---|---|---|---|---|---|---|
Saturation induction BS [T] at room temperature | 1,2 | 1,2 | 1,2 | 1,22 | 1,4 | 1,4 | 1,7 |
Saturation magnetostriction λS [ppm] | <0,5 | <0,5 | <0,5 | 2-4 | 3 | 3 | 15 |
Hysteresis loop shapes | R, F | Z, R, F | F | F | F | F | F/R |
For R-/F-loop: | |||||||
Initial permeability µi | 80.000 – 200.000 | 20.000 – 200.000 | 20.000 – 200.000 | 4000-18.000 | 30.000-70.000 | 30.000-70.000 | ~10.000 |
Power losses at 10 kHz / 0,6 T [W/kg] | – | 5 | 5 | 5 | 5 | 20 | |
Power losses at 100 kHz / 0,3 T [W/kg] | – | 60 | 40 | – | 65 | 55 | – |
Target frequency range (transformers) | – | 5 – 30kHz | 20 – 80kHz | – | 5 – 30kHz | 20 – 80kHz | 1 – 8kHz |
– | no / small Iunsym | no / small Iunsym | medium / high Iunsym | small Iunsym | small Iunsym | – | |
Usability for RCD devices and current transformers | + | + | – | – | – | – | – |
