Last-time-buy — BSS84PH6433XTMA1 is in its final procurement window
Infineon has marked the BSS84PH6433XTMA1 as Last Buy. For a BOM that depends on this exact P-channel MOSFET, the window to secure lifetime buy quantities is now.
60 V drain-source, 170 mA continuous drain — what these ratings mean for your load-switch design
The 60 V Vdss gives you headroom for 48 V telecom rails, 24 V industrial buses, or battery-stack switching. The 170 mA continuous drain at 25 °C is the DC current ceiling at the package level — derate for ambient temperature above 25 °C and for pulsed operation. The Rds(on) of 8 Ohm at 170 mA and 10 V gate drive sets the conduction loss: at full current, expect about 230 mW dissipation, which the 360 mW package power limit can handle with proper PCB copper. The drive voltage range of 4.5 V to 10 V means it can be driven from 5 V logic or a 12 V gate supply, but the 2 V threshold maximum at 20 µA drain current means it starts turning on well below 4.5 V — verify the gate drive level against your worst-case Vgs(th) spread.
PG-SOT23 footprint and temperature range
The BSS84PH6433XTMA1 comes in the standard SOT-23-3 package (Infineon's PG-SOT23). Input capacitance is 19 pF at 25 V Vds, keeping switching losses low in high-frequency converters.