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Product Detailed Parameters
- Description：CMC 181MH 300MA 2LN TH
- Series：SSR
- Mfr：KEMET
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：2.85Ohm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-25°C ~ 120°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.906" L x 0.906" W (23.00mm x 23.00mm)
- Height (Max)：0.571" (14.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：181 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The KEMET SSR21NH-031810 is a through-hole common mode choke designed for AC line filtering applications. It features an inductance of 181 mH at 10 kHz and supports a maximum DC current of 300 mA. The component has a typical DC resistance of 2.85 Ohms and operates within a temperature range of -25°C to +120°C. Rated for 250 VAC, it utilizes a PCB mount installation style with dimensions of 23 mm width, 14.5 mm height, and 3.5 mm length.
Feature Summary
- Provides common mode noise suppression for AC power lines
- Supports through-hole printed circuit board mounting
- Operates reliably across extended industrial temperature ranges
Applications
- AC line input filtering in electronic equipment
- Noise reduction in power supply circuits
- EMI suppression in consumer electronics
Procurement Notes
Verify the specific suffix and inductance value against the target design requirements. Confirm that the 300 mA current rating and 2.85 Ohm DC resistance meet the circuit specifications. Ensure the through-hole package dimensions fit the available PCB real estate. Check RoHS compliance status if required by the manufacturing process.
Selection Notes
Select this component when a high inductance value of 181 mH is required for effective common mode attenuation. The 300 mA current rating suits low-power AC applications. Consider the physical size constraints as the component requires significant PCB area. Verify compatibility with the operating voltage and temperature environment of the final assembly.
Part Context
This part belongs to the KEMET SSR21NH series of AC line filters. The series offers various inductance values tailored for different noise suppression needs. These components are engineered for robust performance in standard through-hole layouts, providing a reliable solution for electromagnetic interference mitigation in compact electronic designs.
Replacement Considerations
Direct substitutes include other KEMET parts from the same series with similar electrical characteristics, such as the SSR21NV-M031900 or SSR21NH-M051350, provided their inductance and current ratings align with the application requirements.
