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Product Detailed Parameters
- Description：CMC 4.3MH 1.1A 2LN TH
- Series：ALFT-03A
- Mfr：Abracon LLC
- Package：Bulk
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：1.1A
- DC Resistance (DCR) (Max)：700mOhm
- 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：4.3 mH @ 1 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The ALFT-03A-9 is a common mode filter choke from the Abracon ALFT series, designed for AC line filtering applications. It features a ferrite core and radial through-hole mounting configuration with four pins. The component provides an inductance of 4.3 mH at 1 kHz and supports a maximum DC current of 1.1 A. Its maximum DC resistance is specified at 700 mOhms. The device operates within a temperature range of -25°C to +85°C and measures 23.9 mm in length, 18 mm in width, and 21.6 mm in height.
Feature Summary
- Two-line common mode filtering capability using ferrite core technology
- Radial through-hole mounting design for PCB integration
- High inductance value for effective noise suppression on AC lines
Applications
- AC line input filtering
- Common mode noise reduction in power supplies
- Electromagnetic interference suppression in electronic equipment
Procurement Notes
Verify the specific part number ALFT-03A-9 against official Abracon documentation to confirm electrical parameters such as 4.3 mH inductance and 1.1 A current rating. Ensure compatibility with through-hole assembly processes and check for any specific handling requirements related to the ferrite core material. Confirm that the application does not involve military, aviation, or life-dependent medical uses, as these are explicitly excluded by the manufacturer.
Selection Notes
Select this component when designing circuits requiring common mode noise attenuation on AC lines with moderate current demands up to 1.1 A. The 4.3 mH inductance offers significant impedance to high-frequency noise. Consider the physical dimensions and through-hole pin configuration for board layout constraints. This part is suitable for general industrial and consumer electronics where standard operating temperatures between -25°C and +85°C are sufficient.
Part Context
The ALFT-03A-9 belongs to the ALFT series of common mode chokes manufactured by Abracon LLC. This series focuses on AC line filters utilizing ferrite cores to suppress electromagnetic interference. The product is intended for general-purpose electronic applications and is not designated for critical safety or aerospace environments. It represents a standard solution for EMI mitigation in power entry modules.
Replacement Considerations
Cross-reference with other ALFT series parts like ALFT-03A-3 or ALFT-03A-10 if different inductance or current ratings are required. Verify pinout compatibility and physical footprint before substituting. Ensure the alternative component meets the same thermal and electrical specifications for the specific circuit application.
