High Impedance Common Mode Filter Signal Power Lines

Product Overview

The 7345 SCC SMT Common Mode Line Filter is a high-performance surface-mount component designed to suppress high-frequency common-mode noise in signal and power lines, serving as a key 7345 Surface Mount Common Mode Noise Suppressor for modern high-density electronic circuits. Optimized for automated SMT production lines, this High-Frequency SMT Common Mode Filter features a compact surface-mount package, ultra-high impedance at high frequencies, and stable electrical performance across a wide temperature range. It effectively eliminates common-mode interference generated by switching power supplies, microcontrollers, and high-speed communication modules, significantly improving the anti-interference performance and signal transmission stability of electronic systems. Targeted at ToB customers in consumer electronics, industrial control, and telecommunications, the 7345 SCC series balances miniaturization, performance, and manufacturability, making it an ideal choice for high-volume, high-precision electronic product design.

Core Advantages

High-Frequency Common-Mode Noise Suppression

With a high-impedance design at high frequencies (up to 100,000Ω for the 470μH model), the 7345 SCC series effectively suppresses common-mode noise in the 10kHz to 100MHz frequency band—the primary interference range for most electronic systems. This eliminates signal distortion and power supply instability caused by EMI, reducing the need for additional filter circuits and simplifying EMC compliance testing for customers.

SMT Package for Automated Production

The compact SMT package is fully compatible with standard pick-and-place and reflow soldering processes, enabling seamless integration into high-volume automated production lines. This design not only improves production efficiency and reduces manual labor costs for B2B customers but also ensures consistent soldering quality, lowering the defective rate of mass-produced products compared to through-hole filter components.

Robust Electrical Performance

The 7345 SCC SMT Common Mode Line Filter features a high-quality ferrite core and bifilar winding structure, delivering stable inductance values and low DC resistance (RDC) under continuous operation. It supports a rated voltage of 80V DC and 250V AC, with overcurrent protection capabilities that withstand short-term current surges, ensuring reliable performance in harsh operating conditions such as industrial control panels and outdoor communication equipment.

Technical Specifications

Typical Applications

The 7345 SCC SMT Common Mode Line Filter is widely used in noise suppression for signal and power lines across various electronic systems, with core applications including:

Consumer electronics power modules: Switching power supplies for smart home devices, laptops, and mobile phone chargers to reduce EMI radiation.

Industrial control circuits: PLCs, servo drivers, and sensor modules to eliminate noise interference and improve control precision.

Telecommunication equipment: Base station signal modules, network switches, and routers to enhance high-speed signal transmission stability.

Automotive electronics: On-board low-voltage power supplies and infotainment systems (compliant with automotive-grade temperature requirements).

Renewable energy auxiliary circuits: Signal detection and control modules for wind and solar power systems to resist outdoor electromagnetic interference.

Certifications & Compliance

The 7345 SCC SMT Common Mode Line Filter series adheres to the strictest international environmental and industry standards: it is RoHS (2011/65/EU) and REACH (EC 1907/2006) compliant, with a halogen-free design meeting JEDEC JS 709 B and IEC 61249-2-21 standards. All products pass IPC-A-610 class 3 soldering quality tests and industrial-grade thermal cycle tests (-40°C to +125°C), ensuring reliable operation in extreme temperatures. For customers with automotive application needs, we provide AEC-Q200 Grade 1 certification support, and all products are accompanied by complete material declaration sheets (MSDS) for global market access.

Customization & Procurement

We provide customer-centric procurement and customization solutions for the 7345 SCC SMT Common Mode Line Filter, tailored to the mass production and R&D needs of ToB customers: