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Product Detailed Parameters
- Description：CMC 400MA 2LN 120 OHM SMD
- Series：SCM
- Mfr：Allied Components International
- Package：Tape & Reel (TR)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：300mOhm
- Voltage Rating - DC：120V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 150°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 SCM10-121M-RC is a surface mount common mode choke manufactured by Allied Components International. It features a horizontal package with four PC pads. The component provides an impedance of 120 Ohms at 100 MHz and supports a current rating of 400mA. Its direct current resistance (DCR) is specified as 300mOhm. The device operates within a temperature range of -40°C to +150°C.
Feature Summary
- Provides common mode noise suppression for two-line circuits
- Utilizes a horizontal surface mount package design
- Engineered for high-temperature operation up to 150°C
Applications
- Signal line filtering in electronic devices
- Noise suppression in data transmission interfaces
- EMI reduction in compact consumer electronics
Procurement Notes
Verify the specific datasheet version from Allied Components International before integration, as specifications may vary between revisions. Confirm that the horizontal package footprint matches the target PCB layout exactly. Ensure the 400mA current rating and 120 Ohm impedance meet the circuit requirements. Cross-reference the DCR value of 300mOhm against thermal management constraints. Validate compatibility with assembly processes intended for the operating temperature range.
Selection Notes
Select this component when a low-profile horizontal form factor is required for two-line signal integrity. The 120 Ohm impedance at 100 MHz targets specific high-frequency noise profiles. The 400mA rating suits low-power signal lines rather than power delivery paths. Consider the 300mOhm DCR for minimal voltage drop in sensitive circuits. The wide temperature range supports harsh environment applications.
Part Context
This part belongs to the SCM series of common mode chokes from Allied Components International. It is distinct from their power inductor lines such as the PS10 or PCS series. The SCM designation indicates a multi-turn winding structure optimized for differential noise cancellation. It differs from single-inductor power shields by addressing common mode interference specifically.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify electrical equivalence including impedance curves and current ratings if considering alternative manufacturers.
