STMicroelectronics has marked the STP20NE06L as Obsolete. This means the manufacturer no longer produces the part, and no official last-time-buy window remains open. Quantities are lot-specific and confirmed at RFQ; no stock-holding claim is made here.
Key ratings and what they mean for the BOM
This places it in the 60 V / 20 A class — a common sweet spot for low-to-medium power DC-DC converters, load switches, and motor-drive output stages in 12 V and 24 V systems. Maximum on-resistance is 70 mOhm at 10 A gate drive of 10 V. At 20 A, the conduction loss is I²R = 28 W — well within the 70 W power dissipation limit at the case, but the junction-to-case thermal path must be managed with a heatsink for sustained high-current operation. Gate charge is 20 nC at 5 V drive. This is a modest charge — a standard gate driver or even a logic-level output can switch it at moderate frequencies without excessive drive losses. The 800 pF input capacitance at 25 V drain confirms the switching speed is suitable for PWM up to the low tens of kHz.
Housed in a TO-220-3 through-hole package. The tab is the drain terminal; the centre pin is drain, left gate, right source when viewed with the label facing you. The metal tab must be electrically isolated or connected to the drain potential in the circuit. Operating junction temperature range extends to 175 °C — this is the standard maximum for silicon power MOSFETs and allows headroom in high-ambient or poorly-ventilated enclosures.