The 2N7002PS/ZLX: The logic-level gate threshold — 2.4V max at 250µA — means it switches fully with 3.3V or 5V logic rails, so you can drive it directly from a microcontroller GPIO or a gate-driver IC without a separate 10V supply. The 1.6 Ohm max on-resistance at 500mA and 10V gate drive sets the conduction loss floor for low-side switching, relay drivers, or level-shifting in 12V/24V/48V industrial and telecom auxiliary circuits.
At Vgs=10V and Id=500mA, the max Rds(on) is 1.6 Ohm. For a 320mA continuous load that translates to about 164 mW of conduction loss per channel — manageable in the SOT-363 package if the board has some copper area for heat spreading, but the junction temperature ceiling is 150°C, so derate above 70°C ambient. Gate charge is 0.8 nC max at 4.5V — a very light load on the driver. The input capacitance Ciss is 50 pF max at Vds=10V, so the switching speed is limited more by the gate-drive loop inductance than by the device itself. This part is sized for low-frequency switching (a few hundred kHz at most) where the switching losses are negligible compared to the conduction losses.
The 2N7002PS/ZLX is listed as obsolete. Nexperia has discontinued production, so the only available supply is through independent distribution — surplus stock, new-old-stock, or broker-channel material.
Package and marking — what to look for on the reel
The package/case is a 6-TSSOP, also designated SC-88 or SOT-363, with the supplier device package marked as 6-TSSOP. The base product number is 2N7002, so the top-side marking on the part will typically be a 2N7002 variant code, not the full /ZLX suffix. When inspecting incoming stock, the date-code laser etch on the SOT-363 body should be consistent across the lot — any mismatch in font or position flags a potential re-mark.