CMI
Common Mode Inductor / 共模电感

SQ/UC Flat Wire Common Mode Inductor

Low DCR · High Frequency Filtering · EMI Suppression

SQ/UC flat wire common mode inductors feature low DCR and excellent high-frequency filtering, designed for power adapters and EV charging equipment.

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Product Features

Advanced flat wire winding technology delivers lower DC resistance (DCR) and higher current capacity. Common mode inductors effectively suppress CM interference and improve EMI filtering performance.

  • Flat wire winding — high fill factor, minimal flux leakage
  • Low DCR — reduced heat, improved efficiency
  • High CM impedance — effective high-frequency interference suppression
  • Automated winding — stable quality, consistent performance
  • Custom specifications available per customer requirements

Applications

🔌 Power Adapters
⚡ EV Charging Stations
💡 LED Drivers
🔧 Switch Mode Power Supply
🏭 Industrial Control
📡 Telecom Equipment

Specifications

ParameterValue
TypeSQ/UC Flat Wire Common Mode Inductor
Inductance Range1mH – 50mH
Rated Current1A – 30A
DC ResistanceLow DCR Design
Operating Temp-40°C to +125°C
Flame RatingUL94 V-0 / HB
Wire Spec0.5×3mm / 0.8×4mm / Custom
Typical Use65W PD Adapters, EV On-board Chargers

Production Video

Contact Us

Free samples available. Technical support & datasheets on request.

📍
Address
No.2, Dexing West 1st Street, Gaobu Town, Dongguan, Guangdong, China
📞
Phone
+86 134 3388 5009 / +86 137 1259 3248
✉️
Email
dggbsr@163.com
🕐
Business Hours
Mon-Sat 8:30 – 18:00 (GMT+8)

SQ/UC Flat-Wire Common Mode Choke Selection Table

CRSQ-series Inductor Selection Guide — 2025 Edition

Official selection handbook from Dongguan ChaoRong Electronic Products Co., LTD. Covers all models dimensions, electrical specs, packaging and handling precautions. Contact us for the PDF version.

SQ Inductor Selection Table - Cover
Page 1 — Cover
SQ Inductor Selection Table - Revision Record
Page 2 — Revision Record
SQ Inductor Selection Table - Features & Code
Page 3 — Features & Code
SQ Inductor Selection Table - CR1010 Dimension
Page 4 — CR1010 Dimension
SQ Inductor Selection Table - CR1212 Dimension
Page 5 — CR1212 Dimension
SQ Inductor Selection Table - CR1515 Dimension
Page 6 — CR1515 Dimension
SQ Inductor Selection Table - CR1918 Dimension
Page 7 — CR1918 Dimension
SQ Inductor Selection Table - CR2418 Dimension
Page 8 — CR2418 Dimension
SQ Inductor Selection Table - CR2820 Dimension
Page 9 — CR2820 Dimension
SQ Inductor Selection Table - CR3324 Dimension
Page 10 — CR3324 Dimension
SQ Inductor Selection Table - Internal Structure & Soldering
Page 11 — Internal Structure & Soldering
SQ Inductor Selection Table - Packing
Page 12 — Packing
SQ Inductor Selection Table - Precautions
Page 13 — Precautions
SQ Inductor Selection Table - Legal Disclaimer
Page 14 — Legal Disclaimer