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Product Detailed Parameters
- Description：CMC 17.5MH 1.2A 2LN TH
- Series：SSR
- Mfr：KEMET
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：1.2A
- DC Resistance (DCR) (Max)：270mOhm
- 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：17.5 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The KEMET SSR21NH-12175 is a single-channel common mode filter choke designed for printed circuit board mounting via through-hole technology. It features an inductance of 17.5 mH and supports a maximum DC current of 1.2 A. The component has a maximum DC resistance of 270 mOhms and is rated for 250 VAC operation. Its compact physical dimensions are 16 mm in width, 3.5 mm in length, and 27 mm in height. The device operates within a temperature range of -25°C to +120°C.
Feature Summary
- Provides common mode noise suppression for AC line applications
- Supports high-temperature operation up to 120°C
- Utilizes a compact footprint suitable for space-constrained PCB layouts
Applications
- AC line filtering in electronic equipment
- Noise suppression in power supply inputs
- EMI reduction in consumer electronics
Procurement Notes
Verify the specific part number against official KEMET documentation to ensure correct inductance and current ratings. Confirm that the through-hole package dimensions match the target PCB layout constraints. Check for RoHS compliance status as indicated in the manufacturer's datasheet before finalizing procurement specifications.
Selection Notes
Select this component when a 17.5 mH inductance at 1.2 A is required for common mode noise attenuation. Ensure the design accommodates the 27 mm height and 16 mm width. Verify that the operating environment stays within the specified -25°C to +120°C temperature range for reliable performance.
Part Context
This component belongs to the KEMET SSR21NH series of common mode chokes. These devices are engineered for AC line filtering applications where significant noise suppression is needed. The series offers various inductance values to suit different current and frequency requirements while maintaining a standardized through-hole form factor.
Replacement Considerations
The part is also identified by the alias UALN21H1217500. When substituting, verify that any alternative component matches the 17.5 mH inductance, 1.2 A current rating, and 270 mOhm DCR specifications to maintain circuit integrity.
