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Product Detailed Parameters
- Description：CMC 3.3MH 4A 2LN TH
- Series：RN
- Mfr：Schaffner EMC Inc.
- Package：Tube
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：4A
- DC Resistance (DCR) (Max)：46mOhm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：300V
- Operating Temperature：-40°C ~ 100°C
- Ratings：-
- Approval Agency：ENEC, UR, VDE
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：1.220" L x 0.709" W (31.00mm x 18.00mm)
- Height (Max)：1.165" (29.60mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：3.3 mH @ 10 kHz
- Qualification：-
- Grade：-
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Overview
The Schaffner RN222-4-02-3M3 is a two-line common mode choke from the RN series, designed for vertical PCB mounting. It features a nominal inductance of 3.3 mH and supports a maximum DC current of 4 A. The component exhibits a maximum DC resistance of 46 milliohms. It operates within a temperature range of -40°C to +100°C and carries UL 94V-0 flammability rating. The device is rated for 300 VDC and complies with PD2 pollution degree standards.
Feature Summary
- Vertical through-hole construction for board mount applications
- Two-line configuration for common mode noise suppression
- High current handling capability up to 4 A
- Low impedance design with minimal DC resistance
Applications
- EMC/EMI filtering for medical devices
- Power line filtering in electronic equipment
- Common mode noise suppression in industrial controls
Procurement Notes
Verify the complete part number including the suffix to ensure correct inductance tolerance and packaging specifications. Confirm that the vertical mounting orientation matches the PCB layout requirements. Check for RoHS compliance status if required by specific regulatory frameworks. Ensure the operating voltage does not exceed the 300 VDC limit during installation.
Selection Notes
Select this component when a high-current common mode choke is required for vertical PCB integration. The 3.3 mH inductance provides effective filtering for moderate frequency noise. The low DC resistance minimizes power loss in high-current paths. Verify that the physical dimensions fit the available board space and that the thermal performance meets the application's ambient temperature conditions.
Part Context
This component belongs to the Schaffner RN series of EMC chokes, which are engineered for robust performance in demanding environments. The series offers various current ratings and inductance values to suit different power line filtering needs. These components are widely used in industries requiring reliable EMI suppression, such as medical and industrial sectors.
Replacement Considerations
The predecessor model RN222-4-02 is obsolete. The RN222-4-02-3M3 serves as the direct replacement substitute. Verify pin compatibility and mechanical footprint before substitution.
