In recent years, microwave-based WPT (Warm Power Transmission) technology has been attracting attention both domestically and internationally as a next-generation power supply infrastructure.
The advancement of digital transformation (DX) and the proliferation of IoT devices are increasing the demand for sustained power supply to a large number of small electronic devices.
In particular, supplying power to locations where wiring and battery replacement are difficult is a major challenge in fields such as factories, social infrastructure, logistics, agriculture, and healthcare.
Furthermore, in terms of legal frameworks, both domestically and internationally, efforts are underway to develop frequency utilization systems and deregulate for microwave-based WPT (Warm Pulse Technology), accelerating the transition from demonstration experiments to social implementation.

The biggest challenge in the practical application of microwave-based WPT is the conversion efficiency when converting received microwaves into DC power.
In particular, IoT applications require high conversion efficiency even in low-power environments.
The NT9000/NT9001/NT9002/NT9003 series are microwave WPT diodes that achieve both low forward voltage and high DC breakdown voltage thanks to Nisshinbo Microdevices' proprietary GaAs wafer process technology.
This enables operation with a wide dynamic range and the realization of highly efficient rectification circuits, providing a solution that supports stable power supply in powered devices utilizing WPT, such as factory automation and IoT devices for building management applications, where wiring and battery replacement are difficult.

The NT9000/NT9001 is ideal for 1W class rectifier circuits, while the NT9002/NT9003 is ideal for 1mW class rectifier circuits, making them suitable for a variety of use cases with different applications and power requirements.
This series serves as a prerequisite technology for stable power supply via WPT (Water Power Transit) on-site, enabling continuous operation that does not rely on wiring or battery replacement, and supporting the resolution of social issues in various fields.

The main features are as follows:

• Frequency bands:920MHz band, 2.4GHz band, 5.7GHz band

• High reverse voltage ^*1: 20V

Low forward voltage:0.1V typ.

• Low reverse leakage current:10μA/20μA typ. (NT9000/NT9001)
0.5μA/1μA typ. (NT9002/NT9003)

・Low equivalent series resistance:4Ω/2Ωtyp. (NT9000/NT9001)
110Ω/55Ω typ. (NT9002/NT9003)

• Low equivalent capacitance:0.2pF/0.4pF typ. (NT9000/NT9001)

　　　　  　　　0.025pF/0.03pF typ.（NT9002/NT9003)

*1: Absolute maximum rating

NT9000/NT9001/NT9002/NT9003　(DFN1212-4-HD)