The Lambda / TDK EMI TCR20S30 is an EMI/EMC filter designed to suppress electromagnetic noise and enhance electromagnetic compatibility in electronic systems. Built from passive L-C circuits combining capacitors and inductors, this filter addresses both differential-mode and common-mode conducted emissions across AC and DC applications. It integrates into power supplies, converters, and equipment requiring compliance with international electromagnetic standards.
Technical Specifications
• Component Type: EMI/EMC Filter
• Construction: Passive L-C circuits with capacitors and inductors
• Input Voltage Ratings: AC (250VAC) and DC (6VDC, 20VDC, 48VDC, 80VDC) configurations available
• Leakage Current: Internal line bypass capacitors may contribute measurable leakage; magnitude varies by configuration
• Inrush Current: Peak inrush occurs at power-on when used with switching supplies; permissible duration typically limited to approximately one-quarter cycle of 50/60 Hz power
• Operating Temperature Range: 0°C to 40°C (standard); ceramic capacitor elements rated -55°C to 125°C or -55°C to 150°C depending on configuration
• Storage Temperature Range: -40°C to +85°C
• Insertion Attenuation: Measured per MIL-STD-220
– Key Features
• Dual-mode noise reduction: suppresses both differential and common-mode interference
• Multiple voltage ratings accommodate AC and DC circuit integration
• Standards alignment: CISPR, IEC 61000, EN 55011, EN 55032, EN 61000, FCC Part 15, MIL-STD-461
• Leakage current performance suitable for applications using electric leakage protection devices
• Controlled inrush current characteristics for switching power supply compatibility
– Typical Applications
• AC-DC power supplies
• DC-DC converter input filtering
• General electronic equipment EMI suppression
• Systems requiring conducted emission compliance testing
– Compatibility & Integration
The TCR20S30 integrates into systems requiring MIL-STD-461 compliance and commercial EMC standards adherence. Wide operating and storage temperature ranges support diverse environmental deployments. Voltage and current configurations enable direct integration across AC mains and distributed DC bus architectures.
