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Product Detailed Parameters
- Description：CMC 300MA 2LN 120 OHM SMD
- Series：ACM-E
- Mfr：TDK Corporation
- Package：Tape & Reel (TR)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：450mOhm
- 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)：0.043" (1.10mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：120 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The ACM2012E-121-2P-T01 is a two-line common mode choke from the TDK ACM series, designed for signal line applications. It features an impedance of 120 Ohms at 100 MHz and a rated current of 300 mA. The component has a maximum DC resistance (DCR) of 450 mOhms and operates within a temperature range of -40°C to +85°C. Its compact surface mount package measures 2.00 mm in length, 1.20 mm in width, and 1.00 mm in height.
Feature Summary
- Provides significant noise suppression for common mode interference while maintaining low differential mode impedance to preserve high-speed signal integrity.
- Achieves substantial miniaturization through a wound-type chip construction suitable for space-constrained printed circuit boards.
Applications
- USB 2.0 and USB 3.0 data lines
- Ethernet connections
- HDMI interfaces
Procurement Notes
Verify the specific suffix 'T01' against official TDK documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with standard reflow soldering profiles for surface mount assembly. Confirm RoHS compliance status as required by target market regulations before finalizing procurement orders.
Selection Notes
Select this component when designing circuits requiring effective common mode noise filtering for high-speed differential signals. The low differential impedance ensures minimal impact on signal quality. Verify that the 300 mA current rating meets the operational requirements of the specific application without causing excessive heat generation or performance degradation.
Part Context
This part belongs to the TDK ACM series of common mode filters, which are engineered for signal line protection. The series offers various impedance values and current ratings in compact packages. The ACM2012E variant specifically targets high-density PCB layouts where space is limited but effective EMI suppression is critical for digital communication standards.
Replacement Considerations
ACM2012-121-2P-T002 is a related model within the same series. Verify if the higher current rating of 370 mA and lower DCR of 220 mOhms in the T002 variant are acceptable substitutes. Ensure pinout and physical dimensions remain compatible with the existing design footprint.
