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For Purchasing Managers, Technical Directors & Operations Leaders who demand EMI suppression without blowing the budget, our surface mount common mode choke delivers up to 45 dB attenuation in a 0402 footprint, backed by ISO‑9001 quality and a 7‑day lead‑time.
Get Free Quote in 24 hResult: Project overruns, delayed shipments, and reduced competitiveness.
Solve These Issues Now →| Parameter | Typical Value | Unit | Tolerance |
|---|---|---|---|
| Inductance (L) | 10‑100 | µH | ±10 % |
| DC Resistance (DCR) | 0.1‑5 | Ω | ±5 % |
| Operating Frequency | 10 k‑100 MHz | — | — |
| Package | 0402 / 0603 / 0805 | — | — |
| Temperature Range | -55 °C ~ +125 °C | — | — |
| Certification | CE, FCC, RoHS, VDE | — | — |
ac-common-mode-choke Customized-choke-and-inductor design-and-fabricate-several-inductor-choke High-Permeability-Common-Mode-Choke
“Switching to Xinchangda’s surface mount common mode choke cut our EMI‑related failures by 42 % and saved us $0.08 per unit. Delivery was exactly 7 days as promised.” – John Miller, Procurement Manager, MedTech USA
“The OEM design service let us integrate a custom 0603 choke without redesigning the PCB. The cost‑benefit analysis showed a 28 % total savings.” – Linda Chen, Senior Engineer, AutoGear Inc.
Compliance & Certifications: CE, FCC, RoHS, VDE, ISO 9001, CB, GS, SAA, IPPC – all documents available on request.
Standard SKUs ship within 7 business days after order confirmation. Express production (stock‑available) can be completed in 48 hours.
Yes. Our R&D team offers OEM/ODM services for custom L, DCR, and conformal‑coat options (e.g., lead‑free, moisture‑resistant). Minimum order for custom runs is 5 k pieces.
All our surface mount common mode chokes are tested and certified for FCC Part 15 Class B and CE EN 55022/55024 compliance.
We accept T/T (30 % advance, 70 % before shipment) or L/C at sight. For qualified accounts, net‑30 terms are available after the first successful order.
All products carry a 12‑month warranty against material and workmanship defects. Our technical support team is available 24 h via email, WhatsApp, or phone.
Limited‑time offer: Free engineering sample (up to 10 pcs) and a money‑back guarantee if the choke fails to meet your spec within 30 days.
Stock limited – orders placed before May 15 2026 qualify for the free sample and express shipping.
Emily Rodriguez, Supply Chain Manager, TechGear Corp (USA)

"The sample arrived in 2 days, met all our EMI specs, and the price was 30 % lower than our previous supplier. We placed a 50 k order immediately."
Markus Schmidt, Procurement Lead, ElektroMotive GmbH (Germany)
"Xinchangda’s ISO‑9001 system gave us confidence to approve their custom choke for our new electric‑vehicle charger. The 7‑day delivery saved us a critical launch window."
Sarah Lee, Operations Director, MedSys Ltd (UK)
"Compliance was a nightmare until we found Xinchangda. All certifications were provided instantly, and the choke passed our internal EMC test on the first attempt."