Compact SMD Common Mode Choke with High Current Capability and Superior EMI Suppression for Space-Efficient Power Supply Noise Filtering

Engineered for modern power electronics, the SQS1212A Series represents a line of high-performance SMD Inductors designed to effectively suppress electromagnetic interference (EMI). These Low DCR Chokes utilize a square core construction and high-permeability material to deliver high impedance at low frequencies with minimal DC power loss. Their compact SMD flat profile and superior attenuation characteristics make them an ideal, cost-effective solution for enhancing EMC performance in space-constrained applications.

Key Features

• Space-Efficient & Reliable: Compact SMD footprint with a square core design minimizes board space usage and reduces magnetic leakage.

• Superior EMI Suppression: High-permeability material combined with low stray capacitance ensures high impedance at low frequencies and provides excellent attenuation of common-mode noise.

• High Current Capability: The Low DCR Choke design minimizes voltage drop and power loss, supporting high rated currents up to 3.0A for robust power handling.

• Safety & Compliance: Construction features materials compliant with UL94V-0 flammability rating and offers high insulation resistance, meeting international safety standards. The series is also RoHS and REACH compliant.

• Automated Production: Manufactured with automated processes for high consistency, reliability, and cost-effectiveness.

Technical Specifications

Applications

These versatile Common Mode Chokes are ideally suited for noise filtering in a wide array of power supply circuits and electronic devices, including:

• Switching Mode Power Supplies (SMPS): High-density designs for LCD TVs, Power Adapters, and Battery Chargers.

• Consumer Electronics: Effective EMI filtering in Home Appliances and various digital devices.

• Industrial Electronics: Noise suppression in control boards, motor drives, and industrial power systems.

• Automotive Electronics: DC-DC converters and onboard chargers where reliable performance is critical.

Shaanxi SHINHOM Enterprise Co.,Ltd is one large-sized key enterprise in producing magnetic components and supplying OEM`high quality magnetics components in China ,It has been approved for the certification ISO9001&QS9000.Shinhom has grown rapidly by supplying high quality magnetic components on-time, offering competitive pricing, and providing strong customer service, It`s products can be widely used in personal computer, computer peripherals, automotive electronics, consumer electronics, elecommunication equipment ,test equipment, GPS equipment, medical appliances and cellular Phone to name just a few . It has annual capacity reaches 300 Million Pieces and has more than 37 year of experience in producing inductors & transformers,Current transformers, filters.

Since its inception in 1998, SHINHOM has become a major supplier of inductors & transformers and Product Solutions for its professional R&D Department, accurate market positioning and high quality products.