EMI Filter Circuits 35 DB 50V 20A SMD

BNX022-01L – 2-Channel EMI Filter, 20A LC Low Pass – Murata Manufacturing

Ensure electromagnetic compatibility in compact designs with Murata’s BNX022-01L EMI filter. This high-performance 5th-order LC filter suppresses interference up to 1GHz while handling 20A current—perfect for protecting sensitive data lines in space-constrained applications. PCX delivers genuine Murata components with guaranteed quality and same-day shipping.

Key Features

• Type: 2-Channel Low Pass EMI Filter (5th Order)
• Attenuation: 35dB @ 1MHz to 1GHz
• Current Rating: 20A per Channel
• Voltage Rating: 50V
• Technology: LC Network (C = 1µF)
• Operating Temperature: -40°C to 125°C
• Package: 4-SMD, No Lead (12.10mm x 9.10mm)

Technical Specifications

Part of Murata’s EMIFIL® BNX series, this active-status filter features ultra-low channel resistance (0.00043 Ohms) and surface-mount design for automated assembly. Its compact dimensions (12.10mm x 9.10mm) save board space while the wide temperature range ensures reliability in harsh environments. Note: This component does not include ESD protection. View Datasheet

Typical Applications

• Smartphone and tablet data line noise suppression
• Portable medical device signal integrity
• IoT sensor interfaces
• Wearable technology power management
• Automotive infotainment systems

About Murata Manufacturing

Murata Manufacturing is a global leader in electronic components, renowned for innovation in ceramic-based technologies. With over 75 years of expertise, Murata holds dominant market share in EMI filtration solutions, serving industries from consumer electronics to automotive.

The company invests heavily in R&D, holding thousands of patents for component miniaturization and high-frequency performance. Murata’s EMIFIL® series, including this BNX filter, sets industry benchmarks for noise suppression efficiency in compact footprints, backed by rigorous quality certifications.

About EMI/RFI Filters

EMI/RFI filters are critical passive components that suppress electromagnetic interference (EMI) and radio-frequency interference (RFI) in electronic circuits. They protect sensitive devices from signal degradation caused by external noise sources or internal switching elements, ensuring compliance with international electromagnetic compatibility (EMC) standards.

LC filters like the BNX022-01L use combined inductor-capacitor networks to create frequency-dependent impedance, attenuating high-frequency noise while allowing desired signals to pass. Their compact surface-mount designs make them indispensable in modern high-density PCB layouts, particularly in mobile technology where space optimization is paramount.

Packaging Options

Available in industry-standard formats for production flexibility:

• Tape & Reel (TR)
• Cut Tape (CT)
• Digi-Reel®

Note: Product images are representational; verify packaging upon order confirmation.

Frequently Asked Questions

Q: What’s the difference between LC filters and RC filters?
A: LC filters use inductors and capacitors, offering higher efficiency for power applications. RC filters use resistors and capacitors, better suited for low-current signal lines.

Q: Can this filter handle USB 3.0 data lines?
A: Yes, its 35dB attenuation up to 1GHz effectively suppresses noise in high-speed interfaces like USB 3.0 commonly found in mobile devices.

Q: Is external ESD protection required?
A: Yes, since this filter lacks integrated ESD protection, pair it with TVS diodes for complete circuit protection.

Q: What solder reflow profile is recommended?
A: Follow Murata’s datasheet guidelines for lead-free reflow, typically peaking at 260°C for 10 seconds maximum.

Q: How does the 5th-order design benefit my application?
A: Higher-order filters provide steeper roll-off characteristics, offering superior noise rejection near your signal’s cutoff frequency.

Q: Can PCX provide technical support for filter integration?
A: Absolutely! Our engineering team offers schematic review and layout guidance—contact [email protected] for assistance.

Order Today for Fast Delivery!

Minimize EMI risks with guaranteed authentic Murata components. PCX ships same-day from US warehouses—add the BNX022-01L to your BOM now for reliable noise suppression in your next project!