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Product Detailed Parameters
- Description：CMC 45MH 300MA 2LN TH
- Series：ALFT-03A
- Mfr：Abracon LLC
- Package：Bulk
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：2.5Ohm
- Voltage Rating - DC：250V
- Voltage Rating - AC：-
- Operating Temperature：-25°C ~ 85°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.941" L x 0.709" W (23.90mm x 18.00mm)
- Height (Max)：0.850" (21.60mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：45 mH @ 1 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Abracon ALFT-03A-2 is a common mode filter choke designed for PCB mounting. It features radial termination and operates within a temperature range of -25°C to +85°C. Key electrical specifications include an inductance of 45 mH, a maximum DC current rating of 300 mA, and a maximum DC resistance of 2.5 Ohms. The component dimensions are 23.9 mm in length, 18 mm in width, and 21.6 mm in height.
Feature Summary
- Provides common mode noise filtering for AC line applications
- Utilizes ferrite core material for effective electromagnetic interference suppression
- Supports through-hole vertical mounting with radial leads
Applications
- AC power line filtering
- Electromagnetic interference suppression in consumer electronics
- Common mode noise reduction in industrial control systems
Procurement Notes
Verify the specific part number suffix against official Abracon documentation to ensure correct electrical ratings. Confirm that the required inductance and current handling capabilities match the target circuit design. Check for RoHS compliance status as indicated in the manufacturer's datasheet. Ensure the physical footprint aligns with the printed circuit board layout constraints.
Selection Notes
Select this component when a high inductance value of 45 mH is required for significant noise attenuation. Consider the 300 mA current limit to avoid saturation during normal operation. Evaluate the 2.5 Ohm DC resistance impact on voltage drop within the power supply path. Compare against lower inductance variants if space or cost constraints necessitate different performance trade-offs.
Part Context
This component belongs to the ALFT series of common mode chokes manufactured by Abracon LLC. The series includes various models with differing inductance and current ratings, such as the ALFT-03A-1 and ALFT-03A-3. These filters are typically used in AC input stages to mitigate conducted emissions.
Replacement Considerations
Direct substitutes may include other Abracon ALFT series parts with similar form factors but different electrical characteristics. Verify compatibility with existing thermal management and mechanical mounting requirements before substitution.
