Package and thermal environment
The AUIRFS3206: Surface-mount D2PAK package — the drain tab is the primary heat path. The junction temperature range is -55 to 175 deg C, so the part can operate in engine-bay or under-hood ambient without derating below 150 deg C case temperature. Gate-source voltage is limited to ±20 V absolute maximum — the gate oxide thickness sets this ceiling; a gate-drive rail above 15 V needs a series resistor or zener clamp to prevent oxide rupture.