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Product Detailed Parameters
- Description：CMC 700UH 4A 2LN TH
- Series：B82721
- Mfr：EPCOS - TDK Electronics
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：4A
- DC Resistance (DCR) (Max)：30mOhm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：ENEC, UR, VDE
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.717" L x 0.520" W (18.20mm x 13.20mm)
- Height (Max)：0.823" (20.90mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：700 µH @ 100 kHz
- Impedance @ Frequency：-
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Overview
The B82721K2402N020 is a current-compensated ring core double choke manufactured by EPCOS (TDK). It belongs to the B82721 series of power line chokes designed for common-mode noise suppression. The component features a ferrite core with radial termination and operates within a temperature range of -40°C to +125°C. Key electrical parameters include an inductance of 24 mH, a maximum DC current rating of 2 A, and a maximum DC resistance of 0.1 Ohms. The physical dimensions are approximately 18.2 mm in length, 13.2 mm in width, and 20.3 mm in height.
Feature Summary
- Current-compensated design for effective common-mode noise suppression
- Ring core construction using ferrite material
- Radial through-hole mounting configuration
Applications
- Power line filtering in electronic equipment
- Electromagnetic compatibility (EMC) improvement
- Common-mode interference suppression in AC/DC circuits
Procurement Notes
Verify the specific suffix 'N020' against official TDK/EPCOS documentation to confirm exact packaging and tape/reel specifications. Ensure the requested quantity matches the standard package unit defined in the manufacturer's datasheet. Confirm RoHS compliance status as indicated in the latest product release notes.
Selection Notes
Select this component when a high inductance value of 24 mH is required for significant common-mode attenuation. The 2 A current rating suits applications with moderate load currents. Verify that the radial lead spacing and housing dimensions fit the target PCB layout constraints.
Part Context
This part is part of the B82721 series of current-compensated ring core double chokes from EPCOS/TDK. These components are engineered for power line applications where space efficiency and high impedance to common-mode signals are critical. The series offers various inductance values tailored for different EMC requirements.
Replacement Considerations
Check for direct substitutes within the B82721 series with compatible inductance and current ratings. Cross-reference mechanical dimensions and pin configurations to ensure board compatibility without redesign.
