40 V P-Channel MOSFET in a TO-92 — the switching load it carries
The TP2104N3-G: That 40 V Vdss covers 24 V and 28 V rails with margin; the 175 mA Id handles small solenoid, relay, and signal-level loads where an N-Channel part would need a level shifter.
Temperature grade and package fit
The TO-92-3 through-hole package (TO-226AA) mates with standard 0.100-inch pitch breadboards and PCB layouts. Power dissipation is 740 mW at 25°C ambient, derated above that.
