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Product Detailed Parameters
- Description：CMC 330MA 2LN 220 OHM SMD
- Series：ACM-21
- Mfr：Abracon LLC
- Package：Tape & Reel (TR)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：330mA
- DC Resistance (DCR) (Max)：350mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 85°C
- Ratings：-
- 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：220 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The Abracon LLC ACM-21-221M-T is a surface-mount common mode choke designed for signal line filtering. It features a dual-line configuration with an impedance of 220 Ohms at 100 MHz and a rated current of 330 mA. The component has a DC resistance of 0.4 Ohms and operates within a temperature range of -40°C to 85°C. Measuring 2.1mm x 1.25mm, it utilizes a wire-wound construction suitable for compact electronic designs requiring EMI suppression.
Feature Summary
- Dual-line architecture for effective noise cancellation in differential signal paths
- Wire-wound construction providing high impedance characteristics at target frequencies
- Compact surface-mount footprint optimized for space-constrained PCB layouts
Applications
- Signal line filtering in personal computer peripherals
- EMI suppression for digital video converter applications
- Noise reduction in set-top box circuitry
Procurement Notes
Verify the specific suffix 'T' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 330 mA current rating meets the peak operational demands of the target circuit to prevent saturation. Ensure the 220 Ohm impedance value aligns with the frequency spectrum of the signals being filtered to achieve optimal attenuation performance.
Selection Notes
Select this component when a dual-channel filter is necessary for high-frequency noise mitigation in small form-factor devices. The 0.4 Ohm DC resistance minimizes power loss in low-voltage signal lines. Consider the -40°C to 85°C operating range to ensure reliability in standard commercial environments where thermal management is limited.
Part Context
This part belongs to the ACM-21 series of chip wire-wound common mode chokes from Abracon. The series is characterized by its small physical dimensions and robust wire-wound technology, which distinguishes it from planar or bead-type alternatives. It serves as a specialized solution for applications requiring precise impedance control and high current handling relative to its size.
Replacement Considerations
Cross-reference with other ACM-21 variants such as ACM-21-121M-T for different impedance requirements. Verify compatibility with ACM-21H series if higher temperature ratings are needed, noting potential dimensional differences.
