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Product Detailed Parameters
- Description：CMC 280UH 500MA 2LN TH
- Series：B82721
- Mfr：EPCOS - TDK Electronics
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：500mA
- DC Resistance (DCR) (Max)：1.14Ohm
- 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)：0.803" (20.40mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：280 µH @ 10 kHz
- Impedance @ Frequency：-
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Overview
The B82721K2501U031 is a two-line common mode choke manufactured by EPCOS (TDK Electronics). It features a ferrite core and through-hole mounting. The component has an inductance of 280 µH at 10 kHz, a rated current of 500 mA, and a DC resistance of 1.14 Ohm.
Feature Summary
- Utilizes a ferrite ring core for effective electromagnetic interference suppression
- Designed for power line applications with current-compensated operation
- Constructed for through-hole PCB integration
Applications
- Power line filtering
- Electromagnetic compatibility circuits
- General purpose inductor applications
Procurement Notes
Verify the complete part number including suffixes to ensure correct packaging and tolerance specifications. Confirm that the 500 mA current rating and 1.14 Ohm DC resistance align with your circuit requirements. Check datasheet details for operating temperature range and physical dimensions before finalizing procurement decisions.
Selection Notes
Select this component when a 280 µH inductance is required for common mode noise reduction in low-current power lines. Ensure the 500 mA current handling capacity meets the load demands. Verify that the through-hole package fits the available PCB space and that the 1.14 Ohm resistance does not cause excessive voltage drop.
Part Context
This component belongs to the B82721 series of common mode chokes from EPCOS/TDK. These devices are designed for suppressing electromagnetic interference in power supply lines. The series typically offers various inductance values and current ratings to suit different electronic equipment needs.
Replacement Considerations
Consult official TDK/EPCOS documentation for verified substitute part numbers within the same series or equivalent performance alternatives. Do not assume cross-compatibility without verifying electrical parameters and physical dimensions.
FAQ
What is the core material used in this choke?
The B82721K2501U031 uses a ferrite core material.
Is this component suitable for high-frequency applications?
It is specified as a power line choke with inductance measured at 10 kHz, indicating suitability for power line filtering rather than high-frequency RF applications.
