600 V, 17 A, 190 mOhm — the SMPS workhorse in I2PAK
The I2PAK (TO-262) through-hole package simplifies heatsink attachment — the exposed metal tab carries the drain and needs a thermal pad to the heatsink, with the leads soldered into the PCB.
Gate charge and switching loss — 46 nC at 10 V
Total gate charge is 46 nC at Vgs = 10 V. For a 100 kHz hard-switched converter, the gate driver must supply about 4.6 mA average current (46 nC × 100 kHz) to charge and discharge the gate capacitance each cycle. The 1400 pF input capacitance at 50 V drain bias gives a rough Miller plateau timing estimate — the driver's peak current capability should be sized to keep the switching transition under 100 ns to avoid excessive cross-conduction loss.
In a downhole tool or avionics power supply, the 125 W power dissipation limit at the case (Tc) must be derated above 25°C per the datasheet curve — the I2PAK's thermal resistance to the heatsink dominates the junction temperature rise. The 4 V gate threshold at 250 µA drain current is typical for standard logic-level drive; the 10 V recommended drive voltage ensures the lowest Rds(on).
Lifecycle and compliance — active, ROHS3, no obsolescence risk
ROHS3 compliant. No official successor or cross-reference is listed, but the MDmesh™ II family includes pin-compatible variants in the I2PAK footprint — the STP24NM60N in TO-220 and the STW24NM60N in TO-247 share the same die and ratings, differing only in package and thermal performance. For dual-sourcing, confirm the package and mounting interface against the BOM.