Lambda / TDK / EMI LK352

The TDK-Lambda EMI LK352 is an electromagnetic interference filter engineered to suppress conducted and radiated EMI across power conversion applications. This EMC line filter addresses both differential and common mode noise, enabling compliance with international standards while protecting against input transients. Built on TDK-Lambda's platform of reliable EMI solutions, the LK352 serves demanding sectors including medical, industrial, laboratory, and telecommunications equipment where electromagnetic compatibility is non-negotiable.

Technical Specifications

The LK352 suppresses conducted emissions up to 30 MHz and mitigates radiated EMI through dual-mode noise filtering. Input voltage ranges span 105-132 VAC or 188-238 VAC at 47-63 Hz operation. The filter addresses both differential and common mode noise generated during power conversion, with transient protection included in the filter topology. Associated TDK-Lambda power supplies demonstrate line regulation of 0.015% or 1 mV (whichever is greater) across input variations, and load regulation better than 10 mA or 0.1% (whichever is greater) for no-load to full-load transitions. Ripple and noise performance reaches approximately 500 µV RMS.

Key Features

• Conducted EMI suppression to 30 MHz


• Differential and common mode noise filtering


• Input transient protection


• Terminal block rear connections


• DIN rail mountable packaging options available


• Brushed aluminum chassis with clear anodized finish and grey inlay

Compliance & Standards The LK352 supports EMC compliance including EN 55011, EN 55032, and FCC Part 15 requirements across industrial and commercial applications.

Typical Applications Medical equipment, laboratory instrumentation, industrial automation systems, telecommunications infrastructure, and test and measurement platforms benefit from this filter's EMI suppression and transient protection capabilities.