The ACM2012D-900-2PT is a common mode choke from TDK Corporation. It's designed to suppress common mode noise in differential signal lines. Common mode chokes are passive electronic components used to filter out unwanted noise that is common to multiple lines, while allowing differential signals to pass through relatively unimpeded.

Applications:

• USB lines
• Differential signal lines in communication equipment
• LVDS (Low-Voltage Differential Signaling)
• HDMI
• Ethernet

Features:

• Impedance: 90 Ohms at 100MHz (Consult the datasheet to confirm the exact impedance value at specified frequencies).
• Package: 0805 (2012 Metric) SMD (Surface Mount Device).
• Rated Current: Typically 500mA (Check the datasheet for the exact current rating).
• Operating Temperature Range: Generally -40°C to +85°C (Refer to the datasheet for the specific temperature range).
• DC Resistance (DCR): Low DCR to minimize signal loss.

Benefits:

• Effective Noise Suppression: Filters out common mode noise, improving signal integrity and reducing electromagnetic interference (EMI).
• Minimal Signal Distortion: Low DCR ensures minimal signal loss and distortion, preserving the integrity of the differential signal.
• Compact Size: The 0805 package allows for space-saving designs in electronic devices.
• Easy Integration: Surface mount package simplifies the assembly process and is compatible with automated manufacturing.
• Improved System Performance: By reducing noise, the choke contributes to improved overall system performance and reliability.

Additional Details:

The ACM2012D series from TDK are designed for high-speed differential data lines where common mode noise can be a significant issue. Choosing the correct impedance and current rating is crucial for optimal performance in the intended application. Always consult the TDK datasheet for complete specifications and application notes.