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Product Detailed Parameters
- Description：CMC 18MH 500MA 2LN TH
- Series：EH
- Mfr：Schaffner EMC Inc.
- Package：Tray
- Filter Type：Power Line
- Number of Lines：2
- Current Rating (Max)：500mA
- DC Resistance (DCR) (Max)：725mOhm (Typ)
- Voltage Rating - DC：-
- Voltage Rating - AC：250V
- Operating Temperature：-25°C ~ 100°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.827" L x 0.827" W (21.00mm x 21.00mm)
- Height (Max)：0.740" (18.80mm)
- Package / Case：Horizontal, 4 PC Pin
- Inductance @ Frequency：18 mH @ 400 Hz
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Overview
The Schaffner EH20-0.5-02-18M is a current compensated common mode choke designed for through-hole mounting on printed circuit boards. It features an inductance of 18 mH with a tolerance of 15%, rated for a maximum DC current of 500 mA and a typical DC resistance of 725 mOhms. The component operates within a temperature range of -25°C to +100°C, housed in a compact 21 mm x 21 mm x 17.8 mm ferrite core package.
Feature Summary
- Provides effective common mode suppression for electromagnetic interference mitigation
- Utilizes a current compensated design for balanced signal integrity
- Constructed with ferrite core material for stable magnetic performance
Applications
- Electromagnetic compatibility filtering in medical devices
- Power-line filter applications requiring common mode noise reduction
- General electronic equipment EMI suppression
Procurement Notes
Verify the manufacturer designation, as this part may be listed under TE Connectivity / Schaffner branding. Confirm the specific suffix matches the required 18 mH inductance and 500 mA current rating. Ensure the through-hole package dimensions align with the target PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when a compact, high-inductance common mode choke is required for low-current circuits. The 18 mH value suits applications needing significant noise attenuation at lower frequencies. Verify that the 500 mA saturation current meets the peak load requirements of the specific circuit design to prevent performance degradation.
Part Context
This component belongs to the EH series of EMC/RFI chokes from Schaffner. These parts are engineered for compact board-level integration, offering high inductance in small footprints. The series supports various inductance values and current ratings to address diverse EMI suppression needs across industrial and consumer electronics sectors.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult official distributor databases or manufacturer cross-reference guides for potential alternatives if this specific part number is unavailable.
