Power

Semi-power MOSFETs are AEC-Q101 qualified

3rd March 2021
Mick Elliott

AEC-Q101 qualified compact-body semi-power MOSFETs from Toshiba support a wide range of automotive applications for battery systems from 12 V to 48 V including power line load switches, LED headlights, and BMS cell balance circuitry.

The MOSFETs are in stock at distributor Digi-Key Electronics.

As opposed to the existing gull-wing lead type SOT-23 package, the SOT-23F is a Toshiba proprietary flat-lead featured package, which improves thermal dissipation through increased heat sinking contact area between the package and the print circuit board (PCB).

As mount quality and reliability under harsh thermal environments is a usual concern for flat-lead type packages, the company has ensured that thermal cycling requirements for automotive applications have been met while also maintaining footprint compatibility to the predecessor SOT-23 package.

By combining sophisticated wafer processing and packaging techniques, the SSM3K341R and SSM3K361R in the SOT-23F package boasts industry-leading RDS(ON) of 36 mΩ and 65 mΩ (at VGS = 4.5 V) respectively.

The low on-resistance allows a reduction in application size while also reducing energy losses.

In addition, both devices support a maximum channel temperature of +175°C and can be used extensively in automotive applications where the operating environment is demanding. They come in a small surface mount package

Applications are LED headlights, Battery management system (BMS) and power supply reverse connection protection.

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