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Product Detailed Parameters
- Description：CMC 400MA 2LN 120 OHM SMD
- Series：BWCU_02
- Mfr：Pulse Electronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：300mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.081" L x 0.049" W (2.05mm x 1.25mm)
- 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 BWCU00201212121M02 is an unshielded surface-mount common mode choke manufactured by Pulse Electronics. It features a two-line configuration with a nominal impedance of 120 Ohms at a test frequency of 100 MHz and a tolerance of 20%. The component supports a maximum DC current of 400 mA (0.4 A) and has a maximum DC resistance of 300 mOhms. Rated for a voltage of 50 VDC, it operates within a temperature range of -40°C to +105°C. The physical dimensions are 2.05 mm in length, 1.25 mm in width, and 1.2 mm in height, corresponding to the 0805 [2012 Metric] package.
Feature Summary
- Designed for noise suppression in high-speed digital interfaces
- Compact surface-mount construction for space-constrained PCBs
- Unshielded ferrite core design for standard EMI filtering
Applications
- USB 2.0 data line protection
- IEEE 1394b interface filtering
- LVDS signal integrity enhancement
Procurement Notes
Verify the specific manufacturer designation on official documentation, as some sources associate this part number with Chilisin technology distributed or listed under Pulse Electronics branding. Confirm RoHS compliance status and exact electrical tolerances directly from the current datasheet before finalizing procurement specifications.
Selection Notes
Select this component when a compact 0805 footprint is required for differential pair filtering. Ensure the 400 mA current rating meets the application's operational requirements and that the 120 Ohm impedance aligns with the target noise frequencies. Verify compatibility with SMD reflow processes given the small form factor.
Part Context
This component belongs to the BWCU series of common mode chokes intended for consumer electronics and data communication applications. It serves as a passive filter element to attenuate common mode electromagnetic interference while allowing differential signals to pass with minimal attenuation.
Replacement Considerations
Cross-reference with other 0805 common mode chokes offering 120 Ohms impedance and similar current ratings. Verify pinout compatibility and thermal characteristics if substituting with components from different manufacturers.
