30 V N-channel switch in a standard SOIC-8 footprint
The Renesas RJK0355DSP-00#J0 is a 30 V, 12 A N-channel power MOSFET in an 8-SOP package, built on a standard metal-oxide semiconductor process.
11.1 mOhm on-resistance — conduction loss at the load
That is the worst-case conduction loss figure for thermal budgeting: at 6 A the dissipation is 0.4 W, well within the 1.8 W package limit. The drive voltage range spans 4.5 V to 10 V, so a 5 V logic-level gate signal turns the channel on with higher resistance — expect roughly 1.4× to 1.6× the 10 V Rds(on) at 4.5 V.
6 nC gate charge — light driver load
Total gate charge is 6 nC at a 4.5 V gate drive. The 860 pF input capacitance at 10 V drain-source confirms the gate is easy to drive.
Thermal ceiling — 1.8 W in an SOP-8
Maximum power dissipation is 1.8 W at ambient temperature. The 12 A continuous drain rating is achievable only with the copper area on the PCB acting as a heatsink.