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Product Detailed Parameters
- Description：CMC 77MH 300MA 2LN TH
- Series：SSHB21H
- Mfr：KEMET
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：3.2Ohm
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-25°C ~ 130°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：1.024" L x 0.906" W (26.00mm x 23.00mm)
- Height (Max)：0.610" (15.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：77 mH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The KEMET SSHB21H-03770 is a dual-mode common mode choke designed for through-hole mounting. It features an inductance of 77 mH at 10 kHz and supports a maximum current of 300 mA with a DC resistance of 3.2 Ohms. Rated for 250 VAC, this hybrid coil integrates normal mode and common mode noise suppression into a single component, utilizing a 21 mm package form factor.
Feature Summary
- Dual-mode functionality combining normal mode and common mode noise suppression within a single hybrid coil unit
- Through-hole mounting configuration suitable for robust circuit board integration
- Compact design that reduces the total component count required for EMI filtering applications
Applications
- Electromagnetic interference (EMI) filtering in power supply circuits
- Noise suppression in electronic equipment requiring mixed-mode signal integrity
- Common mode choke applications in AC line filtering systems
Procurement Notes
Verify the complete part number SSHB21H-03770 against official KEMET documentation to ensure correct specifications. Confirm that the 77 mH inductance and 300 mA current rating align with your specific circuit requirements. Check for any specific packaging or handling instructions provided in the manufacturer datasheet before ordering.
Selection Notes
Select this component when space constraints require a single device to handle both common and normal mode noise. Ensure the operating voltage does not exceed 250 VAC and the current remains within the 300 mA limit. The through-hole format is suitable for manual assembly or standard wave soldering processes.
Part Context
This component belongs to the KEMET SSHB series of dual-mode chokes. These hybrid coils are engineered to replace separate inductors and common mode chokes, simplifying the bill of materials. The series offers various inductance values and current ratings to suit different filtering needs while maintaining a consistent physical footprint.
Replacement Considerations
Consult official KEMET substitution guides for verified equivalents. Ensure any replacement maintains the 77 mH inductance, 300 mA current capacity, and 250 VAC rating. Verify that the alternative component supports through-hole mounting and matches the required package dimensions.
