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Product Detailed Parameters
- Description：CMC 1MH 20A 2LN TH
- Series：8100
- Mfr：Bourns Inc.
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：20A
- DC Resistance (DCR) (Max)：7mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：1.700" L x 0.900" W (43.18mm x 22.86mm)
- Height (Max)：1.650" (41.91mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：1 mH @ 1 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Bourns 8121-RC is a through-hole common mode choke from the 8100 series, designed for high-current applications. It features an inductance of 1 mH at 1 kHz and supports a maximum DC current of 20 A. The component has a maximum DC resistance of 7 mOhms and operates within a temperature range starting at -55 C. Its physical dimensions are 43.18 x 23.55 x 41.91 mm, providing robust performance for dual-line filtering.
Feature Summary
- Dual-line common mode filtering capability
- High current handling up to 20 A
- Through-hole mounting technology
- Dielectric strength of 1500 Vrms
Applications
- Industrial power supply filtering
- Motor drive noise suppression
- High-current DC line protection
Procurement Notes
Verify the specific suffix and package type against the official Bourns datasheet to ensure compatibility with your design requirements. Confirm that the 20 A current rating and 1 mH inductance meet your circuit specifications. Check for RoHS compliance status if required by your manufacturing standards. Ensure the through-hole footprint matches your PCB layout constraints before finalizing procurement.
Selection Notes
Select this component when high current capacity and significant common mode noise reduction are required in a through-hole configuration. The 1 mH inductance provides effective filtering for lower frequency interference. Consider the physical size of 43.18 x 23.55 x 41.91 mm for adequate clearance on the PCB. The low DC resistance minimizes power loss in high-current paths.
Part Context
This part belongs to the Bourns 8100 series of common mode chokes, which are engineered for demanding industrial and automotive environments. The series offers various inductance values and current ratings to suit different power line filtering needs. The 8121-RC specifically targets applications requiring robust performance under high load conditions while maintaining signal integrity.
Replacement Considerations
Consult the official Bourns replacement guide for direct substitutes. Verify that any alternative component matches the 1 mH inductance, 20 A current rating, and through-hole package dimensions. Ensure the replacement maintains the same dielectric strength and operating temperature range.
