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Product Detailed Parameters
- Description：CMC 27MH 1.4A 2LN TH
- Series：RN
- Mfr：Schaffner EMC Inc.
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：1.4A (Typ)
- DC Resistance (DCR) (Max)：500mOhm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：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：27 mH @ 1 kHz
- Qualification：-
- Grade：-
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Overview
The Schaffner RN242-1.4-02 is a common mode choke from the RN series, designed for through-hole PCB mounting. It features an inductance of 27 mH and supports a maximum DC current of 1.4 A with a DC resistance of 500 mOhms. The component operates within a temperature range of -40°C to +100°C and utilizes a ferrite core. Its vertical orientation and unshielded design facilitate integration into compact electronic assemblies requiring electromagnetic interference suppression.
Feature Summary
- Provides common mode noise attenuation for differential signal lines
- Utilizes a ferrite core for effective high-frequency impedance
- Supports vertical printed circuit board mounting
Applications
- Power supply input filtering
- Battery charger circuits
- Portable device power management
- Energy-efficient system EMC compliance
Procurement Notes
Verify the specific suffix (e.g., -27M) against official datasheets to confirm exact electrical parameters such as inductance and resistance values. Ensure the selected variant matches the required current rating and physical dimensions for the target PCB layout. Confirm RoHS compliance status directly with the manufacturer or authorized distributor documentation prior to procurement.
Selection Notes
Select this component based on the required 27 mH inductance and 1.4 A current handling capability. Evaluate the 500 mOhm DC resistance impact on voltage drop within the circuit. Consider the vertical package profile for spatial constraints and ensure the operating temperature range meets environmental requirements. Verify compatibility with automated assembly processes if applicable.
Part Context
This component belongs to the Schaffner RN series of common mode chokes, which are engineered for electromagnetic interference suppression in electronic equipment. The series offers various inductance and current ratings to suit different power line filtering applications. These components are widely used in industrial and consumer electronics to meet regulatory EMC standards.
Replacement Considerations
Direct substitutes include RN242-1.4-02-27M and RN242-0.5-02 variants within the same family. Verify that replacement parts match the 27 mH inductance, 1.4 A current rating, and vertical mounting style. Cross-reference pinout and dimensional tolerances to ensure mechanical fit.
