The DRA127-330-M is a common mode choke from Eaton Bussmann designed for EMI/RFI suppression. It is used to filter out unwanted noise and interference from electronic circuits, improving signal integrity and system performance. This choke is particularly effective at attenuating common mode noise, which is a type of noise that appears on both signal lines simultaneously.

Applications:

• Switching Power Supplies: Reduces noise generated by switching circuits.
• LED Lighting: Filters out EMI to prevent interference with other electronic devices.
• Data Communication Lines: Suppresses noise in data transmission systems.
• Audio Equipment: Minimizes noise and hum in audio circuits.
• Motor Drives: Reduces EMI generated by motor control circuits.

Features:

• High Impedance at High Frequencies: Provides effective noise suppression.
• Low DC Resistance: Minimizes power loss in the circuit.
• Compact Size: Allows for easy integration into various applications.
• High Current Capacity: Can handle significant current without saturation.
• Wide Operating Temperature Range: Suitable for use in various environmental conditions.
• RoHS Compliant: Meets environmental standards for hazardous substances.

Benefits:

• Reduced EMI/RFI: Improves signal integrity and prevents interference.
• Improved System Performance: Ensures reliable operation of electronic devices.
• Compliance with EMC Regulations: Helps meet regulatory requirements for electromagnetic compatibility.
• Enhanced Audio Quality: Reduces noise and hum in audio applications.
• Increased System Reliability: Protects against damage from noise and interference.

Technical Specifications:

The DRA127-330-M has a rated inductance of 33µH (microhenries). It is designed to handle a specific rated current, which must be considered when selecting the choke for a particular application. The choke’s physical dimensions and mounting style are also important factors to consider for integration into the circuit board. The device is constructed with materials that provide high magnetic permeability and low core loss to ensure efficient noise suppression. The operating temperature range is specified to ensure reliable performance in a variety of environmental conditions. The choke’s impedance characteristics vary with frequency, providing optimal noise attenuation over a specific frequency range.