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Product Detailed Parameters
- Description：CMC 370MA 2LN 120 OHM SMD
- Series：ACM-21
- Mfr：Abracon LLC
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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 ~ 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：120 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The ACM-21-121M-T is a two-line common mode choke manufactured by Abracon LLC, designed for surface mount applications. It features an impedance of 120 Ohms at 100 MHz and supports a maximum DC current of 370 mA. The component has a maximum DC resistance (DCR) of 300 milliohms and a rated voltage of 50 V DC. Its physical dimensions are 2.00 mm in length, 1.20 mm in width, and a maximum height of 0.055 inches (1.40 mm). The device operates within a temperature range of -40°C to 85°C and utilizes a horizontal 4-pin package.
Feature Summary
- Provides common mode noise suppression for signal lines with low insertion loss due to minimal DC resistance.
- Compact surface mount footprint suitable for high-density PCB layouts.
- RoHS compliant construction ensuring environmental safety standards.
Applications
- High-speed data line filtering
- USB interface protection
- HDMI signal integrity enhancement
Procurement Notes
Verify the complete part number including suffixes to ensure correct packaging and impedance specifications. Confirm RoHS3 compliance status if required by specific regional regulations. Check manufacturer datasheets for updated moisture sensitivity levels and reflow soldering profiles prior to assembly planning.
Selection Notes
Select this component when a 120 Ohm impedance at 100 MHz is required for differential pairs. Ensure the circuit current does not exceed 370 mA to prevent saturation. Compare physical dimensions against available board space, noting the 2.00mm x 1.20mm footprint. Verify thermal management requirements given the operating temperature range.
Part Context
This component belongs to the ACM-21 series of chip wire wound common mode chokes from Abracon. The series offers various impedance and current ratings within a standardized small outline package. It is categorized under passive filters and inductors for electronic circuit protection.
Replacement Considerations
Cross-reference with other Abracon ACM-21 variants such as ACM-21-361M-T for higher impedance needs or ACM-21U-900-T for different current ratings. Verify pin compatibility and mechanical fit before substitution.
FAQ
What is the impedance value of the ACM-21-121M-T at 100 MHz?
The impedance is 120 Ohms at 100 MHz.
Is the ACM-21-121M-T shielded?
No, the component is unshielded.
