Small-signal N-channel for low-power switching
The RE1J002YNTCL is a ROHM N-channel MOSFET in a SC-89 (SOT-490) surface-mount package, also available as supplier device package EMT3F.
50 V drain rating, 200 mA continuous current
The 50 V drain-to-source breakdown (Vdss) gives comfortable headroom on 12 V, 24 V, and even 48 V industrial rails. Continuous drain current is rated 200 mA at 25 °C ambient — enough for driving a small relay coil, an LED string, or the primary switch in a low-power flyback converter. The 150 mW power dissipation at 25 °C ambient (Ta) sets the thermal budget; in a cramped enclosure the actual current will derate below 200 mA.
2.2 Ohm on-resistance at 4.5 V gate drive
The Rds(on) is specified at 2.2 Ohm maximum with Id=200 mA and Vgs=4.5 V. The threshold voltage (Vgs(th)) is 800 mV maximum at 1 mA.
