Nanocrystalline cut core 9×9×32×15×28×51×2 mm
9×9×32×15×28×51×2 mm nanocrystalline cut core, Green Epoxy.
CCNC-09-09-32-15-28-51-002-MFGR is a 9×9×32×15×28×51×2 mm nanocrystalline cut core for LED driver chokes, small SMPS output inductors, and low-power PFC boost inductors. The 9×9 mm limb and 32 mm window length suit bobbin or form-wound coils where an openable core simplifies assembly. Choose this size when Ae, window, and overall length (51 mm) match the target inductor or reactor duty.
Technical Specifications
Physical dimensions
Magnetic properties
Finish and handling
Environmental
Applications and selection
Applications
- LED driver chokes
- small SMPS output inductors
- low-power PFC boost inductors
- auxiliary power supply chokes
- auxiliary SMPS output chokes (typically sub-50W class)
- LED driver inductors
- isolated flyback/forward transformers
- low-power differential-mode EMI filter chokes
- precision current-sensing transformers
When to choose this size
This 9×9×32×15×28×51×2 mm cut core (Ae 1.24 cm²) is aimed at LED driver chokes and related choke or reactor designs. This is the compact end of the cut-core family: use it for lower-power chokes and LED or auxiliary SMPS inductors. Move up to the 10×10×33×20×31×53×2 mm core when you need more Ae, a longer window, or higher current/reactor duty than this part supports. In short, pick CCNC-09-09-32-15-28-51-002-MFGR when your design for LED driver chokes fits this limb and window; pick a neighbor when power level or envelope shifts the trade-off.
Winding notes
Magnetic calculations should use Ae 1.24 cm² and Le 10.7 cm with the published a–f×R geometry (9×9×32×15×28×51×2 mm). The cut faces (gap view, R=2 mm) must mate cleanly after winding; keep clamping consistent to avoid gap variation and audible noise. Nanocrystalline cut cores suit gapped or low-reluctance inductor designs within 1.25 Tesla and -40°C to +130°C; stay inside the epoxy coating temperature capability for continuous duty.
Related application guides
Frequently asked questions
What do the a–f dimensions mean?
Published geometry uses a (tongue width 9 mm), b (build 9 mm), c (window length 32 mm), d (strip width 15 mm), e (window height 28 mm), and f (overall length 51 mm), with corner radius R=2 mm. Use Ae and Le with this geometry for magnetic design.
Is this cut core suitable for chokes and reactors?
Yes. CCNC-09-09-32-15-28-51-002-MFGR is typically used for LED driver chokes, including auxiliary SMPS output chokes (typically sub-50W class). The openable cut-core form simplifies bobbin winding and assembly compared with a closed toroid.
When should I choose a different size instead?
Choose the 10×10×33×20×31×53×2 mm core when you need more magnetic area or window length than this 9×9×32×15×28×51×2 mm core provides.
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