DLP31SN121ML2L

Common Mode Chokes Overview

The DLP31SN121ML2L is a two-line common mode choke coil manufactured by Murata Electronics. It features a film-type construction designed for signal line EMI suppression in surface-mount applications. The component operates within a temperature range of -40°C to +85°C and carries RoHS compliance. Key electrical specifications include an impedance of 120 Ohms at 100 MHz, a maximum DC current rating of 100 mA, and a maximum DC resistance of 2 Ohms. It utilizes a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 1.15 mm height.

Common Mode Chokes Feature Summary

• Provides common mode noise suppression for differential signal lines using a film-type coil structure.
• Designed for surface-mount integration into compact electronic assemblies.
• Supports operation across industrial temperature ranges from -40°C to +85°C.

Common Mode Chokes Applications

• Signal line filtering in portable communication devices
• EMI suppression for high-speed data interfaces
• Noise reduction in automotive electronics

Common Mode Chokes Procurement Notes

Verify the specific ordering suffix and manufacturing date code upon procurement. Confirm that the component meets current RoHS directives and REACH regulations for the intended market. Check for any product change notices or end-of-life announcements, as availability may be limited due to production status changes. Ensure storage conditions adhere to moisture sensitivity level requirements before reflow soldering.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring low-current signal line protection with a 120 Ohm impedance profile at 100 MHz. The 100 mA current rating limits suitability to low-power data lines rather than power distribution. The 1206 footprint offers a balance between size and performance for dense PCB layouts. Verify that the 2 Ohm DC resistance does not cause unacceptable voltage drop in the target application.

Common Mode Chokes Part Context

This part belongs to the DLP31 series of common mode chokes from Murata Electronics. The series includes various impedance values tailored for different frequency suppression needs. The DLP31SN121ML2L specifically targets mid-range interference frequencies in sensitive digital circuits. It shares the standard 1206 package dimensions with other variants in the family, allowing for potential footprint compatibility with similar components.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Murata's official SimSurfing tool or distributor databases for cross-referencing alternatives based on impedance and current ratings.