EFE300M & EFE400M Medical Power Supplies TDK-Lambda EFE300M and EFE400M Medical Power Supplies meet medical and ITE safety specifications. TDK-Lambda EFE300M and EFE400M are certified to IEC/UL 60601-1, for both B (body) and BF (body floating) type medical and dental applications. These power supplies also meet safety standards per IEC/UL 60950-1, making them suitable for ITE applications including broadcast, instrumentation, routers, servers, security networks, ATE, and factory automation. The series features an integrated magnetics transformer, an 8-bit microcontroller for full digital control, and active power factor correction.