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Product Detailed Parameters
- Description：CMC 4.7MH 700MA 2LN TH
- Series：B82791
- Mfr：EPCOS - TDK Electronics
- Package：Bulk
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：700mA
- DC Resistance (DCR) (Max)：440mOhm (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：0.602" L x 0.291" W (15.30mm x 7.40mm)
- Height (Max)：0.693" (17.60mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：4.7 mH @ 10 kHz
- Impedance @ Frequency：-
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Overview
The B82791H2701N001 is a current-compensated ring core common mode choke manufactured by EPCOS (TDK Electronics). It features a vertical, 4-pin through-hole construction with a ferrite core. The component provides an inductance of 4.7 mH at 10 kHz and supports a rated DC current of 700 mA. Its typical DC resistance is 440 mOhm. The device operates within a temperature range of -40°C to +125°C and has a maximum length of 15.30 mm.
Feature Summary
- Current-compensated ring core design for effective common mode noise suppression
- Vertical 4-pin through-hole mounting configuration
- High inductance value suitable for power line filtering applications
Applications
- Power supply input filtering
- EMI suppression in electronic equipment
- Signal integrity protection in data lines
Procurement Notes
Verify the exact part number against official TDK/EPCOS documentation to ensure compatibility with specific circuit requirements. Confirm that the 700 mA rated current and 4.7 mH inductance meet the design specifications. Check for RoHS compliance status as indicated in the manufacturer's datasheet. Ensure the vertical package dimensions fit the intended PCB layout constraints.
Selection Notes
Select this component when high common mode rejection is required for low-current power lines. The 4.7 mH inductance offers significant attenuation for high-frequency noise. The 700 mA rating suits moderate current applications. Consider the vertical footprint for assembly orientation. Verify thermal performance within the specified -40°C to +125°C operating range for the target environment.
Part Context
This component belongs to the B82791 series of common mode chokes from EPCOS/TDK. These devices are designed for general-purpose EMI filtering in various electronic systems. The series utilizes ferrite cores to provide stable inductance characteristics across a wide frequency range. They are commonly used in consumer electronics, industrial controls, and automotive applications where compact size and reliable noise suppression are essential.
Replacement Considerations
Consult official TDK/EPCOS substitution guides for verified alternatives. Ensure any replacement matches the 4.7 mH inductance, 700 mA current rating, and 4-pin vertical package. Cross-reference pinout configurations to prevent installation errors. Verify that the substitute component meets the same environmental and electrical standards.
