The CST1-125LC is a common mode choke manufactured by Coilcraft. It is designed to suppress common mode noise in electronic circuits, improving signal integrity and reducing electromagnetic interference (EMI).

Applications:

• Power line filtering
• USB interfaces
• CAN bus
• Ethernet interfaces
• Audio circuits

Features:

• High common mode impedance
• Low differential mode impedance
• Compact size
• Surface mount package
• Excellent temperature stability

Benefits:

• Effectively suppresses common mode noise, improving signal quality
• Minimizes distortion of differential signals
• Saves board space
• Easy to install
• Maintains performance over a wide temperature range

The CST1-125LC common mode choke is constructed with two identical windings wound on a common core. This configuration allows the choke to present a high impedance to common mode currents while presenting a low impedance to differential mode currents. Common mode noise is generated by currents flowing in the same direction on multiple conductors, while differential mode signals are carried by currents flowing in opposite directions. By suppressing common mode noise, the CST1-125LC helps to improve the performance and reliability of electronic circuits.

Technical Specifications:

• Inductance: 125 µH (typical, values may vary; consult the datasheet)
• Rated Current: Varies depending on specific part number and application. See datasheet.
• DC Resistance: Consult the Coilcraft datasheet for specific values.
• Operating Temperature: -40°C to +125°C
• Package: Surface Mount