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Product Detailed Parameters
- Description：FILTR LC(PI) 2.9NH/250PF ESD SMD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Type：Low Pass
- Filter Order：3rd
- Technology：LC (Pi)
- Number of Channels：2
- Center / Cutoff Frequency：-
- Attenuation Value：-
- Resistance - Channel (Ohms)：0.28
- Values：L = 2.9nH, C = 250pF
- ESD Protection：Yes
- Operating Temperature：-40°C ~ 125°C
- Applications：Audio
- Voltage - Rated：-
- Mounting Type：Surface Mount
- Package / Case：6-WFBGA, FCBGA
- Size / Dimension：0.067" L x 0.048" W (1.72mm x 1.22mm)
- Height：0.028" (0.70mm)
- Current：-
- Grade：-
- Qualification：-
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Overview
The NUF2441FCT1 is an integrated passive LC(pi) EMI filter with embedded ESD protection, manufactured by onsemi. It features a third-order low-pass configuration with two channels, designed for audio line protection. Key electrical parameters include an inductance of 2.9nH and capacitance of 250pF per channel, with a channel resistance of 0.28 ohms. The device operates within a temperature range of -40°C to +125°C and is housed in a compact 6-WFBGA (FCBGA) package measuring 1.72mm x 1.22mm x 0.70mm.
Feature Summary
- Integrates LC(pi) EMI filtering with electrostatic discharge protection in a single component
- Provides third-order low-pass filtering characteristics for signal integrity enhancement
- Supports dual-channel operation for differential or multi-line audio applications
Applications
- Audio line protection in portable devices
- EMI suppression for high-speed data lines
- ESD safeguarding for consumer electronics interfaces
Procurement Notes
Verify component status as the NUF2441FCT1 is listed as obsolete by the manufacturer. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing PCB footprints and reflow soldering profiles specified for the 6-WFBGA package. Check for alternative lead-free or RoHS-compliant variants if required by current regulatory standards.
Selection Notes
Select this component when space-constrained designs require combined ESD protection and EMI filtering for audio or similar low-voltage signals. The ultra-low inductance value minimizes signal distortion while providing effective high-frequency noise attenuation. Consider the small footprint and dual-channel capability for efficient board layout optimization in mobile or compact electronic systems.
Part Context
This part belongs to onsemi's family of integrated passive devices combining filtering and protection functions. It addresses the industry trend toward miniaturization by replacing discrete components with a single solution. The technology supports reliable operation in harsh electromagnetic environments typical of modern consumer electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. As the part is obsolete, engineers should consult official replacement guides or contact the manufacturer directly for qualified alternatives.
