TDK introduces rugged 60 and 80 Amp fast response ORing modules with efficiencies up to 99.5 %

March 17, 2026

TDK Corporation (TSE:6762) introduces the TDK-Lambda i1R ORing FET modules, capable of operating at 60 or 80 A with a maximum input voltage of 60 Vdc. These ORing modules are designed to replace traditional diodes in applications that require ORing functionality for power supply redundancy or parallel operation. The i1R series uses MOSFET-based circuitry to provide a superior level of performance while reducing reverse current transients.

Applications for the i1R modules include communications, test and measurement equipment, plus harsh environment industrial and robotics requiring a high degree of shock and vibration. While the i1R series was designed to complement other TDK-Lambda solutions, including the i7A and i7C non-isolated converters, GQA and HQA industrial isolated DC-DC converters for high-shock and vibration environments, and RGF differential mode filter modules, its flexible architecture allows it to be deployed alongside other power solutions.

The i1R series has a fast 500 ns (typ) turn-off response, blocking reverse current transients during fault conditions for better protection. The product has a typical low on-resistance of 2.5 and 1.5 mΩ, reducing power losses and waste heat, simplifying the thermal design. The product’s shielded metal package size is a compact 1 x 1” (26.3 x 26.3 mm), saving valuable board space and supporting efficient cooling. For added convenience and simplicity, the series operates without the need for any external components.

Main applications 

• Communications, test and measurement, harsh environment industrial and robotics requiring a high degree of shock and vibration

Main features and benefits 

• 99.5% efficiency

• Compact size

• Fast turn-off during fault conditions

• Replaces traditional diodes