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Nanocrystalline Core Products

Buy stocked toroids, cut cores, and prototyping kits engineered for power electronics, current sensing, and EMI suppression.

Comparing nanocrystalline vs CRGO vs ferrite for your frequency and loss targets? See the engineer's material guide.

Stocked cores and prototyping kits

Published sizes and size-ladder kits with photos and pricing. Shopify checkout attaches to the Buy button once each SKU is live in the store.

Toroidal cores

CenturaCores CCNT-016-010-006-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-016-010-006-MFBL

Nanocrystalline toroidal core 16×10×6 mm

From $1.44 /ea in packs

CenturaCores CCNT-020-012-008-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-020-012-008-MFBL

Nanocrystalline toroidal core 20×12×8 mm

From $2.34 /ea in packs

CenturaCores CCNT-025-016-010-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-025-016-010-MFBL

Nanocrystalline toroidal core 25×16×10 mm

From $4.50 /ea in packs

CenturaCores CCNT-030-020-010-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-030-020-010-MFBL

Nanocrystalline toroidal core 30×20×10 mm

From $5.76 /ea in packs

CenturaCores CCNT-030-020-012-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-030-020-012-MFBL

Nanocrystalline toroidal core 30×20×12 mm

From $6.84 /ea in packs

CenturaCores CCNT-030-020-015-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-030-020-015-MFBL

Nanocrystalline toroidal core 30×20×15 mm

From $8.10 /ea in packs

CenturaCores CCNT-040-025-015-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-040-025-015-MFBL

Nanocrystalline toroidal core 40×25×15 mm

From $15.30 /ea in packs

CenturaCores CCNT-040-032-015-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-040-032-015-MFBL

Nanocrystalline toroidal core 40×32×15 mm

From $9.90 /ea in packs

CenturaCores CCNT-045-030-015-HFBK nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-045-030-015-HFBK

Nanocrystalline toroidal core 45×30×15 mm

From $15.66 /ea in packs

CenturaCores CCNT-050-032-015-MFBL nanocrystalline toroidal core, cased in protective plastic housing for common mode choke and transformer designs.

CCNT-050-032-015-MFBL

Nanocrystalline toroidal core 50×32×15 mm

From $27.90 /ea in packs

CenturaCores CCNT-012-008-004P5-HFBK nanocrystalline toroidal core bare-core dimension diagram, 12×8×4.5 mm, for common mode choke and transformer designs.

CCNT-012-008-004P5-HFBK

Nanocrystalline toroidal core 12×8×4.5 mm

From $0.84 /ea in packs

CenturaCores CCNT-013-009P5-005-HFWH nanocrystalline toroidal core bare-core dimension diagram, 13×9.5×5 mm, for common mode choke and transformer designs.

CCNT-013-009P5-005-HFWH

Nanocrystalline toroidal core 13×9.5×5 mm

From $0.72 /ea in packs

CenturaCores CCNT-016-010-006-HFWH nanocrystalline toroidal core bare-core dimension diagram, 16×10×6 mm, for common mode choke and transformer designs.

CCNT-016-010-006-HFWH

Nanocrystalline toroidal core 16×10×6 mm

From $1.62 /ea in packs

CenturaCores CCNT-020-012-008-HFWH nanocrystalline toroidal core bare-core dimension diagram, 20×12×8 mm, for common mode choke and transformer designs.

CCNT-020-012-008-HFWH

Nanocrystalline toroidal core 20×12×8 mm

From $2.52 /ea in packs

CenturaCores CCNT-025-016-010-HFWH nanocrystalline toroidal core bare-core dimension diagram, 25×16×10 mm, for common mode choke and transformer designs.

CCNT-025-016-010-HFWH

Nanocrystalline toroidal core 25×16×10 mm

From $4.86 /ea in packs

CenturaCores CCNT-025-020-010-HFWH nanocrystalline toroidal core bare-core dimension diagram, 25×20×10 mm, for common mode choke and transformer designs.

CCNT-025-020-010-HFWH

Nanocrystalline toroidal core 25×20×10 mm

From $3.42 /ea in packs

CenturaCores CCNT-030-020-010-HFWH nanocrystalline toroidal core bare-core dimension diagram, 30×20×10 mm, for common mode choke and transformer designs.

CCNT-030-020-010-HFWH

Nanocrystalline toroidal core 30×20×10 mm

From $6.48 /ea in packs

CenturaCores CCNT-030-020-012-HFWH nanocrystalline toroidal core bare-core dimension diagram, 30×20×12 mm, for common mode choke and transformer designs.

CCNT-030-020-012-HFWH

Nanocrystalline toroidal core 30×20×12 mm

From $7.74 /ea in packs

CenturaCores CCNT-030-020-015-HFWH nanocrystalline toroidal core bare-core dimension diagram, 30×20×15 mm, for common mode choke and transformer designs.

CCNT-030-020-015-HFWH

Nanocrystalline toroidal core 30×20×15 mm

From $8.82 /ea in packs

CenturaCores CCNT-032-020-015-HFWH nanocrystalline toroidal core bare-core dimension diagram, 32×20×15 mm, for common mode choke and transformer designs.

CCNT-032-020-015-HFWH

Nanocrystalline toroidal core 32×20×15 mm

From $10.98 /ea in packs

CenturaCores CCNT-040-025-015-HFWH nanocrystalline toroidal core bare-core dimension diagram, 40×25×15 mm, for common mode choke and transformer designs.

CCNT-040-025-015-HFWH

Nanocrystalline toroidal core 40×25×15 mm

From $17.10 /ea in packs

CenturaCores CCNT-040-032-015-HFWH nanocrystalline toroidal core bare-core dimension diagram, 40×32×15 mm, for common mode choke and transformer designs.

CCNT-040-032-015-HFWH

Nanocrystalline toroidal core 40×32×15 mm

From $10.98 /ea in packs

CenturaCores CCNT-050-032-015-HFWH nanocrystalline toroidal core bare-core dimension diagram, 50×32×15 mm, for common mode choke and transformer designs.

CCNT-050-032-015-HFWH

Nanocrystalline toroidal core 50×32×15 mm

From $29.70 /ea in packs

CenturaCores CCNT-065-050-025-HFBK nanocrystalline toroidal core bare-core dimension diagram, 65×50×25 mm, for common mode choke and transformer designs.

CCNT-065-050-025-HFBK

Nanocrystalline toroidal core 65×50×25 mm

From $49.32 /ea in packs

CenturaCores CCNT-090-060-020-HFBK nanocrystalline toroidal core bare-core dimension diagram, 90×60×20 mm, for common mode choke and transformer designs.

CCNT-090-060-020-HFBK

Nanocrystalline toroidal core 90×60×20 mm

From $102.60 /ea in packs

CenturaCores CCNT-100-080-020-HFBK nanocrystalline toroidal core bare-core dimension diagram, 100×80×20 mm, for common mode choke and transformer designs.

CCNT-100-080-020-HFBK

Nanocrystalline toroidal core 100×80×20 mm

From $81.72 /ea in packs

CenturaCores CCNT-105-075-030-HFBK nanocrystalline toroidal core bare-core dimension diagram, 105×75×30 mm, for common mode choke and transformer designs.

CCNT-105-075-030-HFBK

Nanocrystalline toroidal core 105×75×30 mm

From $177.12 /ea in packs

CenturaCores CCNT-110-080-040-HFBK nanocrystalline toroidal core bare-core dimension diagram, 110×80×40 mm, for common mode choke and transformer designs.

CCNT-110-080-040-HFBK

Nanocrystalline toroidal core 110×80×40 mm

From $259.38 /ea in packs

CenturaCores CCNT-087-055-013P5-STBL nanocrystalline toroidal core.

CCNT-087-055-013P5-STBL

Nanocrystalline toroidal core 87×55×13.5 mm

From $81.18 /ea in packs

CenturaCores CCNT-059-052-005-STBL nanocrystalline toroidal core.

CCNT-059-052-005-STBL

Nanocrystalline toroidal core 59×52×5 mm

From $20.88 /ea in packs

CenturaCores CCNT-086-077-010-STBK nanocrystalline toroidal core.

CCNT-086-077-010-STBK

Nanocrystalline toroidal core 86×77×10 mm

From $20.34 /ea in packs

CenturaCores CCNT-054-038-005-STBN nanocrystalline toroidal core.

CCNT-054-038-005-STBN

Nanocrystalline toroidal core 54×38×5 mm

From $11.16 /ea in packs

CenturaCores CCNT-086-076-015-STBN nanocrystalline toroidal core.

CCNT-086-076-015-STBN

Nanocrystalline toroidal core 86×76×15 mm

From $31.86 /ea in packs

CenturaCores CCNT-065-055-010-STBK nanocrystalline toroidal core.

CCNT-065-055-010-STBK

Nanocrystalline toroidal core 65×55×10 mm

From $16.38 /ea in packs

CenturaCores CCNT-048-040-008-STBK nanocrystalline toroidal core.

CCNT-048-040-008-STBK

Nanocrystalline toroidal core 48×40×8 mm

From $10.26 /ea in packs

CenturaCores CCNT-013P5-007P5-004P5-LFBL nanocrystalline toroidal core.

CCNT-013P5-007P5-004P5-LFBL

Nanocrystalline toroidal core 13.5×7.5×4.5 mm

From $0.84 /ea in packs

CenturaCores CCNT-020-012-010-LFBL nanocrystalline toroidal core.

CCNT-020-012-010-LFBL

Nanocrystalline toroidal core 20×12×10 mm

From $0.72 /ea in packs

CenturaCores CCNT-025-016-010-LFBL nanocrystalline toroidal core.

CCNT-025-016-010-LFBL

Nanocrystalline toroidal core 25×16×10 mm

From $1.62 /ea in packs

CenturaCores CCNT-030-018-010-LFBL nanocrystalline toroidal core.

CCNT-030-018-010-LFBL

Nanocrystalline toroidal core 30×18×10 mm

From $1.44 /ea in packs

CenturaCores CCNT-040-026-015-LFBL nanocrystalline toroidal core.

CCNT-040-026-015-LFBL

Nanocrystalline toroidal core 40×26×15 mm

From $2.52 /ea in packs

CenturaCores CCNT-040-030-015-LFBL nanocrystalline toroidal core.

CCNT-040-030-015-LFBL

Nanocrystalline toroidal core 40×30×15 mm

From $2.34 /ea in packs

CenturaCores CCNT-040-032-015-LFBL nanocrystalline toroidal core.

CCNT-040-032-015-LFBL

Nanocrystalline toroidal core 40×32×15 mm

From $4.86 /ea in packs

CenturaCores CCNT-050-035-020-LFBL nanocrystalline toroidal core.

CCNT-050-035-020-LFBL

Nanocrystalline toroidal core 50×35×20 mm

From $4.50 /ea in packs

CenturaCores CCNT-050-030-015-LFBL nanocrystalline toroidal core.

CCNT-050-030-015-LFBL

Nanocrystalline toroidal core 48.2×30×15 mm

From $3.42 /ea in packs

CenturaCores CCNT-065-038-025-LFBL nanocrystalline toroidal core.

CCNT-065-038-025-LFBL

Nanocrystalline toroidal core 65×38×25 mm

From $6.48 /ea in packs

CenturaCores CCNT-080-050-030-LFBL nanocrystalline toroidal core.

CCNT-080-050-030-LFBL

Nanocrystalline toroidal core 78.6×50×30 mm

From $5.76 /ea in packs

Browse Toroidal cores catalog

Current Transformer Cores

Precision cores for current measurement and protection systems with excellent linearity.

Starting a new design? Try the CT Current Transformer Prototyping Kit.

Applications

  • Revenue Metering
  • Protection Systems
  • Power Monitoring
  • Grid Infrastructure

Power Cores

High-temperature power cores for EV charging and high-power applications.

Starting a new design? Try the PFC / Solar Cut Core Kit.

Technical Specifications

General specifications across our nanocrystalline core range

ParameterRange/Value
Core MaterialNanocrystalline Alloy
Operating Frequency10kHz - 1MHz
Temperature Range-40°C to +155°C
Core LossMax 30 W/kg @ 50kHz, 0.15T
Permeability70k - 90k μi
Coating OptionsEpoxy, PBT, SS Band

Standards & Certifications

Our products meet international standards and quality certifications

ISO 9001:2015

Quality management system certification

IEC Standards

International Electrotechnical Commission compliance

IEEE Standards

Institute of Electrical and Electronics Engineers

Frequently asked questions

What types of nanocrystalline transformer cores do you offer?

We offer nanocrystalline toroidal and cut cores you can buy from stock, prototyping kits for design engineers, plus application families for common-mode choke (CMC) cores, current transformer (CT) cores, power / EV charger cores, mini compact cores, specialty automotive cores, and DIY adjustable cores.

Do you sell prototyping kits?

Yes. Purpose-built size-ladder kits for CT, EMI/CMC, ground-fault/RCD, PFC, EV, and hybrid magnetics R&D let you compare nearby cores on the bench, then reorder the winning SKU in production packs. Kits are priced below the sum of 1-pc list prices.

What are the key specifications of your nanocrystalline cores?

Typical envelope: permeability about 70k–90k μi, operating frequency from roughly 10 kHz to 1 MHz depending on design, temperature range about -40°C to +155°C for coated parts, core loss on the order of max 30 W/kg @ 50 kHz and 0.15 T, with epoxy, PBT, and SS band finishes. Each SKU publishes its own AL, Ae/Le, and dimensions.

How do I select the right nanocrystalline core for my application?

Start with a prototyping kit when you need several nearby sizes on the bench. Use CMC cores for EMI suppression, CT cores for Class 0.2s metering and protection, power cores for EV chargers and PFC, mini cores for space-constrained designs, specialty cores for automotive, and DIY cores for adjustable experiments. Prefer stocked PBT toroids or cut cores when you need published photos and pack pricing; otherwise request a quote for made-to-order sizes.

Do you provide custom nanocrystalline core designs?

Yes. We design custom nanocrystalline cores for your dimensions, frequency, power level, gap, and performance targets. Send application details through the quote form for engineering review.

What is the lead time for nanocrystalline cores?

Stocked catalog SKUs and kits ship from inventory when buyable. Standard made-to-order cores typically take 2–4 weeks; custom designs may take 4–8 weeks depending on complexity. Contact us for a SKU-specific lead time.

What certifications and standards apply?

Cores are manufactured under ISO 9001:2015 processes, support designs aligned with IEC and IEEE practices (for example IEC 61869-2 for CT metering where applicable), and meet RoHS and REACH environmental requirements. Every batch includes magnetic testing before shipment.

Need a Custom Solution?

Our engineering team can design and manufacture nanocrystalline cores tailored to your specific requirements.

Request Custom Quote