80V N-channel device targets switched-mode power supplies
Toshiba Electronic Devices & Storage Corporation has launched TPM1R408RH, an 80V N-channel power MOSFET for switched-mode power supplies used in industrial equipment for AI data centres and communications base stations. Shipments started on 29 June 2026.
Built on Toshiba’s latest U-MOS11-H process, the new part targets systems that need higher efficiency, smaller size and lower electromagnetic interference. AI processing has lifted power demand in data centres, while communications infrastructure upgrades have increased pressure on power supply design.
TPM1R408RH delivers a maximum drain-source on-resistance of 1.4mΩ. That is about 26% lower than Toshiba’s 80V TPM1R908QM, which used the older U-MOS X-H process.
The new device also improves the trade-off between RDS(ON) and total gate charge, or Qg. Compared with TPM1R908QM, the figure of merit RDS(ON) × Qg falls by about 45%.
According to Toshiba, those figures put low power loss at industry-leading levels. Lower losses can cut system power use, heat generation and cooling load in switched-mode power supplies.
TPM1R408RH package and EMI gains
During switching, the MOSFET suppresses spike voltage between the drain and source. As a result, designers can reduce EMI and avoid some late-stage rework on filter and snubber circuits.
The product uses Toshiba’s SOP Advance(E) package. That package has about 65% lower package resistance and about 15% lower thermal resistance than Toshiba’s current SOP Advance(N) package.
Those package changes help suppress heat generation and improve heat dissipation. They support higher output and more compact power supply designs for industrial equipment.
Toshiba also offers circuit design tools for switching power supplies. Engineers can use a G0 SPICE model for quick function checks and G2 SPICE models for more accurate transient analysis.
An online circuit simulator on the Toshiba website lets users verify circuit operation in a web browser. Users do not need to set up a simulation environment or download device models.
Toshiba positioned TPM1R408RH for power supplies in AI data centres and communications base stations.
