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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)：67mOhm (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)：1.362" (34.60mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：3.3 mH @ 10 kHz
- Qualification：-
- Grade：-
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Overview
The Schaffner RN242-4-02-3M3 is a common mode choke from the RN series, designed for PCB mounting. It features an inductance of 3.3 mH and supports a maximum current of 4 A. The component utilizes vertical through-hole terminals with a pin configuration suitable for board integration. It operates within a temperature range of -40°C to +100°C and carries UL 94V-0 flammability ratings. The device is rated for 300 VDC and complies with PD2 pollution degree standards.
Feature Summary
- Vertical PCB terminal design for secure board mounting
- High inductance value for effective noise suppression
- Robust thermal performance across wide operating temperatures
- UL 94V-0 certified flame retardant housing
Applications
- Electromagnetic interference filtering in electronic circuits
- Power supply input stages requiring common mode noise reduction
- Signal line protection in industrial control systems
Procurement Notes
Verify the complete part number including suffixes against official Schaffner documentation to ensure correct inductance and terminal specifications. Confirm that the vertical through-hole package aligns with your PCB footprint requirements. Check for updated compliance certifications such as UL or RoHS status directly from the manufacturer's datasheet before finalizing procurement decisions.
Selection Notes
Select this component when a 3.3 mH inductance at 10 kHz is required for common mode noise attenuation. Ensure the 4 A current rating meets the circuit's operational demands. Verify that the vertical orientation fits the available board space and that the through-hole termination method matches the assembly process capabilities.
Part Context
This component belongs to the Schaffner RN series of EMC chokes, which are engineered for general-purpose electromagnetic compatibility applications. The series offers various inductance values and current ratings tailored for different filtering needs. The RN242-4-02-3M3 specifically addresses scenarios requiring moderate inductance with high current handling capability in a compact vertical form factor.
Replacement Considerations
Consult Schaffner's official cross-reference guides for verified substitutes. Ensure any replacement maintains equivalent inductance, current rating, and physical dimensions. Verify that alternative components meet the same safety and environmental compliance standards.
