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Molex EMI and RFI Filters for EMC Compliance and Signal Integrity.

EMI and RFI Filters

As devices and systems become more electrified, compact and electronically dense, mitigating EMI and RFI becomes increasingly crucial to preventing signal degradation and service disruptions. Molex EMI/RFI filters deliver high-performance suppression across a broad portfolio of form factors, including filtered connectors with configurable mechanical options, enclosure-boundary noise suppression with filter plates and feedthroughs, and automation-ready SMT filters. Rugged EMI filters for harsh and high-reliability environments simplify integration and reduce downtime, rework and validation time.

Comprehensive EMI Filtering Solutions for EMC Compliance and System Reliability


Circular EMI Filter Connectors

Integrating a circular connector with EMI filtering, Circular EMI Filter Connectors reduce interference and maintain consistent line-to-line isolation, improving system operation and reliability. These rugged connectors are engineered for harsh environments, with transient withstand capability up to DO160 Level IV.

Circular EMI Filter Connectors

EMI-Filtered High-Performance D-Sub Connectors

These versatile and durable EMI filters employ D-sub form factors with nine to 50 pins, reducing component counts and saving space while delivering superior EMI suppression for high-performance systems. Rugged, compliance-ready construction is engineered to withstand vibration, shock and extreme temperatures.

High-Performance D-Sub

EMI Filter Plates

EMI Filter Plates provide chassis-level feedthrough filtering, blocking EMI at enclosure entry points and protecting sensitive electronics. These high-performance solutions improve signal integrity, support EMC compliance in demanding applications and offer various configurable plate options with filtering ranges up to 18 GHz.

RF EMI Filter Plates

Glass-Sealed EMI Filters

These hermetically sealed feedthrough filters suppress EMI in extreme environments while preventing leakage, outgassing and contamination. Built for superior reliability in harsh conditions, designs are highly configurable and offer multiple thread sizes, circuit types, MIL-SPEC qualifications and voltage/current capacity options.

Glass-Sealed EMI Filters for aerospace and defense applications.

Resin-Sealed EMI Filters

Rugged, resin-sealed bolt-in feedthrough EMI filters enhance signal integrity on DC power and signal/data lines while protecting against moisture, dust and contaminant ingress. Multiple circuit options, lead styles and thread sizes are available, enabling designers to balance DC resistance, insertion loss and broadband attenuation.

A selection of bolt-in Resin-Sealed EMI Filters.

Surface-Mount EMI Filters

Providing high-performance EMI suppression in a compact SMT package, reflow-compatible Surface-Mount EMI Filters enable board-level integration and automated assembly. Options for insertion loss up to 70 dB and current capacity up to 20.0A at 200V DC support power-dense designs while minimizing the PCB footprint.

Surface mount EMI filter.