CMT2214BNA Nanocrystalline Common Mode Power Line Choke | 35mH 3.5A EMI Solution
CMT2214BNA-353-3.5A-LF
Reliable attenuation across compliance-critical bands for compact power layouts.
Discover the CMT2214BNA Series Nanocrystalline Common Mode Power Line Chokes, engineered for next-generation EMI suppression across diverse power electronics. With advanced nanocrystalline core technology, this series provides superior attenuation in both low and high frequency ranges, ensuring reliable performance in demanding applications such as EV chargers, renewable energy inverters, and precision industrial control systems. Its robust design allows engineers to meet stringent EMC standards while keeping layouts compact and efficient.
One of our recent rework cases highlights the proven capability of the CMT2214BNA. A customer previously used a competitor’s amorphous choke, which showed poor suppression in the 0.3–2 MHz range, while another vendor’s product performed poorly near 20 MHz. These EMI gaps prevented safety certification. By switching to our CMT2214BNA (28 × 18 × 32 mm, 35 mH, rated current 3.5 A), they achieved stable attenuation across the full target spectrum without compromising current handling or footprint — successfully passing compliance testing on the first retry.
Choosing the CMT2214BNA means securing more than just a component. Our team partners with customers to fine-tune inductance, impedance, and thermal stability to match specific EMI challenges. With proven reliability up to 150 °C, cost-effective customization options, and strong vibration resistance, the CMT2214BNA helps reduce design risks, shorten certification cycles, and keep your systems competitive in rapidly evolving markets.
Customization
Due to the solid background of our engineer team at ferrite powder territory, we could modify the core powder, design and produce the most suitable product to fit customer's applications. Except for the standard characteristic of our series specification, Coilmaster Electronics also offer the customization product with low minimum order quantity (MOQ), tighter tolerance, different inductance and frequency applications.
Leadtime
Coilmaster’s standard lead time is 6~8 weeks, in urgent case, the fast delivery program is available. For specific product series, we could send out the goods within 10 or 20 working days.
Key features
- Wideband EMI suppression with strong mid-frequency attenuation
- Rated 3.5 A continuous operation in 28×18×32 mm compact housing
- Stable performance up to 150 °C for automotive-grade use
- Customizable impedance for compliance-critical designs
Applications
- Automotive electronics (OBC, infotainment)
- Renewable energy converters
- Precision industrial power supplies
Construction
- Common Mode Choke
Size(mm)
- 28x18x32
Inductance(uH)
- 35000
Inductance tolerance
- ±50%/30%
Test Frequency(MHz)
- 0.01
Irms(A)
- 3.5
DCR(mΩ)
- 80
Additional Notes
Hi-Pot : 1500 (V)
Rated Voltage : 250 (V)
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CMT2214BNA Nanocrystalline Common Mode Power Line Choke | 35mH 3.5A EMI Solution | Magnetic components | Transformer, Inductor, Choke Manufacturer | Coilmaster Electronics
Located in Taiwan since 1995, Coilmaster Electronics Co., Ltd. has been a manufacturer of magnetic components. Its main magnetic components include, CMT2214BNA Nanocrystalline Common Mode Power Line Choke | 35mH 3.5A EMI Solution, common mode chokes, SMD molding power chokes, chock coil inductors, SMD shielded and semi-shielded power inductors, low profile and high current power inductors, high voltage power inductors, ethernet and LAN power transformers, flat wire inductors, RJ45 jacks with integrated magnetics and high frequency transformers, and ceramic or air coil multilayer chip inductors.
Coilmaster offers AEC-Q200 certified, high-efficiency power inductors, chokes, and transformers. Specializing in low-loss, high-current components for Automotive, 5G, and Industrial applications. Contact our experts for instant support. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.
Coilmaster Electronics has been providing customers with high current power inductors since 1995, with both advanced technology and 29 years of experience, Coilmaster Electronics ensures that each customer's requirements are met.




