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Product Detailed Parameters
- Description：CMC 280MA 2LN 90 OHM SMD
- Series：ACM-21H
- Mfr：Abracon LLC
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：280mA
- DC Resistance (DCR) (Max)：400mOhm
- Voltage Rating - DC：20V
- 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：90 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The ACM-21H-900-T is a two-line common mode choke manufactured by Abracon LLC, designed for surface mount applications. It features a ferrite core and wirewound construction within an unshielded 0805 (2012 metric) package measuring 2.0 mm x 1.2 mm x 1.2 mm. The component provides an impedance of 90 Ohms at 100 MHz with a maximum DC current rating of 280 mA and a maximum DC resistance of 400 mOhms. It operates reliably within a temperature range of -40°C to +105°C.
Feature Summary
- Provides effective common mode noise suppression for high-speed signal lines
- Utilizes a compact unshielded wirewound design suitable for space-constrained PCB layouts
- Constructed with a ferrite core for stable electromagnetic interference filtering performance
Applications
- High-definition multimedia interface (HDMI) signal line protection
- Universal serial bus (USB) data line filtering
- Display port (DP) and video interface noise suppression
Procurement Notes
Verify the specific suffix 'H' against project requirements, as it denotes a specialized variant within the ACM-21 series often optimized for HDMI applications. Confirm that the 280 mA current rating aligns with the target circuit's operational limits. Ensure the 0805 footprint matches the board layout. Check RoHS compliance documentation for final assembly standards.
Selection Notes
Select this component when a low-profile 0805 form factor is required for differential pair filtering. The 90 Ohm impedance value is specifically suited for HDMI interfaces operating at standard frequencies. Consider the 280 mA current limit for power delivery constraints. The wide operating temperature range supports diverse environmental conditions without derating concerns.
Part Context
This part belongs to the ACM-21 series of chip wirewound common mode chokes from Abracon. The series includes variants with different impedance values and current ratings, such as the ACM-21U and ACM-21H sub-series. These components are engineered for signal integrity preservation in digital communication interfaces requiring compact EMI solutions.
Replacement Considerations
Cross-reference with ACM-21U-900-T for identical electrical specifications but potentially different packaging or handling characteristics. Verify mechanical dimensions against ACM-21-361M-T if higher impedance is acceptable, noting the significant difference in filtering profile.
