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Product Detailed Parameters
- Description：CMC 29MH 700MA 2LN TH
- Series：SSR
- Mfr：KEMET
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：700mA
- DC Resistance (DCR) (Max)：530mOhm
- 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：29 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The KEMET SSR21NHS-07290 is a through-hole common mode choke designed for AC line filtering applications. It features an inductance of 29 mH and supports a maximum DC current of 0.7 A. The component has a minimum DC resistance of 0.53 mOhms and operates within a temperature range of -25°C to +120°C. Rated for 250 VAC, it utilizes a 20.9 mm lead spacing and measures 3.5 mm in length, 23 mm in width, and 14.5 mm in height.
Feature Summary
- Provides common mode noise suppression for AC power lines
- Supports through-hole PCB mounting with fixed lead spacing
- Operates reliably across a wide industrial temperature range
Applications
- AC line input filtering in electronic equipment
- Noise reduction in power supply circuits
- EMI suppression for single-phase AC systems
Procurement Notes
Verify the specific suffix and manufacturing date code upon ordering, as this component may be subject to end-of-life status or discontinuation by the manufacturer. Confirm that the through-hole package dimensions and lead spacing match your PCB footprint requirements before finalizing procurement decisions.
Selection Notes
Select this component when a 29 mH inductance value is required for common mode noise attenuation at 10 kHz. Ensure the circuit current does not exceed 0.7 A to maintain performance and thermal stability. Verify that the 250 VAC rating aligns with the local mains voltage standards and that the operating temperature range covers the intended environmental conditions.
Part Context
This part belongs to the KEMET SSR21NHS series of common mode chokes. These components are engineered for general-purpose AC line filtering. The series typically offers various inductance values and current ratings to suit different power line requirements while maintaining consistent physical mounting characteristics for design flexibility.
Replacement Considerations
Consult official KEMET documentation for direct cross-references. Alternative parts must match the 29 mH inductance, 0.7 A current rating, and 20.9 mm lead spacing to ensure mechanical compatibility without PCB redesign.
