pha0001m
Junior Member level 1

I need your advises in regarding how safe it is to mount a high voltage NMOS STW12NK95 directly the chassis for heat dissipation purposes.
The operating voltage of the power NMOS(M4,M3) is 420VDC. The chassis is obviously earthed. The power supply is designed to float e.g. isolated from earth, (but let assume the worst case scenario that it is not)
I know that an insulating/thermal pad can be insert between the NMOS and the aluminium chassis to achieved electrical isolation. But is this enough? Is this safe? Please do shared any documented works that shows how to do it safely.
The operating voltage of the power NMOS(M4,M3) is 420VDC. The chassis is obviously earthed. The power supply is designed to float e.g. isolated from earth, (but let assume the worst case scenario that it is not)
I know that an insulating/thermal pad can be insert between the NMOS and the aluminium chassis to achieved electrical isolation. But is this enough? Is this safe? Please do shared any documented works that shows how to do it safely.