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Product Detailed Parameters
- Description：CMC 47MH 300MA 2LN TH
- Series：WE-LF
- Mfr：Würth Elektronik
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：2.6Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.728" L x 0.531" W (18.50mm x 13.50mm)
- Height (Max)：0.807" (20.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：47 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Würth Elektronik 7446120047 is a WE-LF Type SV common mode power line choke designed for PCB mounting. It features an inductance of 47 mH with a tolerance of ±30%. The component supports a maximum DC current of 300 mA and has a maximum DC resistance of 2.6 Ohms. It operates within a temperature range of -40°C to +125°C. The physical dimensions are 18.5 mm in length, 13.5 mm in width, and 20.5 mm in height. Testing frequencies include 50 Hz and 10 kHz.
Feature Summary
- Provides common mode noise suppression for power lines
- Utilizes radial through-hole termination for PCB integration
- Constructed with a rectangular package design
Applications
- Power supply input filtering
- EMI suppression in electronic circuits
- Signal integrity enhancement in noisy environments
Procurement Notes
Verify the specific datasheet version for the 7446120047 to confirm RoHS compliance details and exact pinout configurations. Ensure that the selected component meets the required thermal management standards for the intended operating environment. Cross-reference the manufacturer's official documentation for any recent product change notices or end-of-life announcements before finalizing procurement decisions.
Selection Notes
Select this component when high inductance values are required for effective low-frequency noise attenuation. The 300 mA current rating suits applications with moderate power consumption. Consider the physical footprint constraints as the unit measures 18.5 x 13.5 mm. Verify that the circuit design can accommodate the 2.6 Ohm DC resistance without affecting performance.
Part Context
This part belongs to the WE-LF series from Würth Elektronik, which specializes in common mode chokes for power line applications. The series is engineered for robust performance in industrial and consumer electronics. The 7446120047 variant specifically targets scenarios requiring significant common mode impedance at lower frequencies.
Replacement Considerations
Consult the manufacturer's cross-reference tools for verified substitutes. Ensure any replacement matches the 47 mH inductance, 300 mA current rating, and compatible physical dimensions.
