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Product Detailed Parameters
- Description：CMC 1MH 3A 2LN TH
- Series：7100
- Mfr：Bourns Inc.
- Package：Bulk
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：3A
- DC Resistance (DCR) (Max)：30mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.600" Dia x 0.450" W (15.24mm x 11.43mm)
- Height (Max)：-
- Package / Case：Vertical, No Base, 2 PC Pin
- Inductance @ Frequency：1 mH @ 1 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Bourns 7111-RC is a common mode choke from the 7100 series, designed for PCB mounting with radial termination. It features a ferrite core and offers an inductance of 850 uH with a 15% tolerance at a test frequency of 1 kHz. The component supports a maximum DC current of 3 A and has a maximum DC resistance of 30 mOhms. It operates within a temperature range of -55 C to +105 C. Physical dimensions are 15.24 mm in length/diameter and 11.43 mm in width/height. The unit weighs approximately 4.805 g and is supplied in bulk packaging.
Feature Summary
- Dual winding configuration for effective common mode noise suppression
- High dielectric strength rated at 1000Vrms
- Mounted on a VW-1 rated header for safety compliance
- Low radiation characteristics suitable for sensitive circuits
Applications
- Common mode EMI filtering in electronic systems
- Power supply input stages requiring high current capacity
- Circuits needing robust dielectric isolation
Procurement Notes
Verify the specific suffix (e.g., RC) against the manufacturer's datasheet to confirm RoHS compliance status and exact electrical tolerances. Ensure the radial pin spacing matches the target PCB footprint. Confirm that the 3A saturation current meets the peak load requirements of the application circuit to prevent performance degradation.
Selection Notes
Select this component when a single-channel common mode choke with high current handling is required. The 850 uH value provides significant impedance to common mode noise. Consider the vertical package profile and radial leads for through-hole assembly. Verify that the unshielded design does not interfere with nearby magnetic components or signal traces in the layout.
Part Context
This part belongs to the Bourns 7100 series of common mode chokes. It is manufactured under the J.W. Miller trademark. The component is categorized under Inductors, Chokes & Coils. It is distinct from shielded inductors and other resistor series offered by the manufacturer.
Replacement Considerations
Cross-reference with other 850 uH common mode chokes from the same series if availability is an issue. Ensure substitute parts match the 3A current rating and 1000Vrms dielectric strength. Verify physical dimensions for board compatibility.
