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Product Detailed Parameters
- Description：CMC 370MA 2LN 120OHM SMD AECQ200
- Series：WE-CNSA
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：370mA
- DC Resistance (DCR) (Max)：300mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：AEC-Q200
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.079" L x 0.047" W (2.00mm x 1.20mm)
- Height (Max)：0.055" (1.40mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：120 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 784231121 is a surface-mount common mode filter from the WE-CNSA series, designed for data line protection. It features an inductance of 0.166 µH and a rated current of 370 mA. The component exhibits an impedance of 120 ohms and operates within a temperature range of -40°C to +125°C. Its compact dimensions are 2 mm x 1.2 mm x 1.2 mm, suitable for space-constrained PCB layouts.
Feature Summary
- Provides common mode noise suppression for high-speed data lines
- Complies with AEC-Q200 automotive reliability standards
- Utilizes a compact surface-mount package for automated assembly
Applications
- Automotive infotainment systems
- High-speed data interface protection
- General electronic equipment requiring EMI filtering
Procurement Notes
Verify the specific suffix codes against official Wurth Elektronik documentation to ensure correct electrical characteristics and packaging configuration. Confirm that the procurement channel provides valid traceability records. Cross-reference the part number with the latest datasheet revision to validate compliance with RoHS and REACH directives before finalizing orders.
Selection Notes
Select this component when designing circuits requiring common mode chokes with low inductance values for high-frequency data lines. Ensure the operating current does not exceed 370 mA to maintain performance. Verify that the 120-ohm impedance aligns with the target frequency spectrum for noise attenuation in the specific application environment.
Part Context
This component belongs to the WE-CNSA series of surface-mount common mode filters manufactured by Würth Elektronik. The series is engineered for applications demanding reliable electromagnetic interference suppression in compact form factors. It serves as a specialized solution for protecting sensitive signal integrity in modern electronic designs.
Replacement Considerations
Consult official Wurth Elektronik substitution guides for verified alternatives. Do not assume functional equivalence with generic common mode chokes without validating impedance curves and current ratings against the original specifications.
