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Product Detailed Parameters
- Description：CMC 320MA 2LN 220 OHM SMD
- Series：SCM20
- Mfr：Allied Components International
- Package：Tape & Reel (TR)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：320mA
- DC Resistance (DCR) (Max)：400mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.126" L x 0.063" W (3.20mm x 1.60mm)
- Height (Max)：0.083" (2.10mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：220 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The SCM20-221T-RC is a surface mount common mode choke manufactured by Allied Components International. It features two lines with an impedance of 220 Ohms at 100 MHz and a DC resistance of 400 mΩ. The component has a current rating of 320 mA and operates within a temperature range of -40°C to +105°C.
Feature Summary
- Designed for suppressing common mode noise in high-speed data transmission lines
- Surface mount construction suitable for automated assembly processes
- RoHS compliant and lead-free manufacturing
Applications
- USB 2.0 interface circuits
- High-speed digital signal line protection
- EMI suppression in portable electronic devices
Procurement Notes
Verify the specific suffix 'T' indicates tape and reel packaging if required for your assembly line, as this affects handling procedures. Confirm the manufacturer is Allied Components International to ensure authenticity. Check for RoHS compliance documentation if your project requires environmental certification. Ensure the package dimensions match your PCB footprint design constraints before finalizing procurement.
Selection Notes
Select this component when designing USB 2.0 or similar high-speed interfaces requiring common mode noise attenuation. The 220 Ohm impedance provides effective filtering at 100 MHz while maintaining signal integrity. Consider the 320 mA current rating to ensure it meets the power requirements of the protected circuit without saturation. Verify that the surface mount package fits within the available board space.
Part Context
This part belongs to the SCM20 series of surface mount common mode chokes from Allied Components International. The series includes variants with different impedance values and current ratings, such as the SCM20-121M-RC and SCM20-900T-RC, allowing designers to tailor EMI suppression characteristics to specific application needs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official distributor databases or manufacturer cross-reference tools for verified alternatives.
