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STMicroelectronics STP3LN62K3 — Discrete Semiconductors

STP3LN62K3 N-Channel MOSFET, 620 V, 2.5 A, TO-220

MPNSTP3LN62K3
Obsolete

STMicroelectronics SuperMESH3™ N-Channel MOSFET, 620 V drain-source, 2.5 A continuous drain, 3 Ohm Rds(on) at 10 V, 17 nC gate charge, TO-220-3 through-hole package.

$0.9900Ref. price · indicative, final on quote
STMicroelectronics STP3LN62K3 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STP3LN62K3 specifications
ParameterValue
SeriesSuperMESH3™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage620 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C2.5A (Tc)
Power dissipation45W (Tc)
Operating temperature150°C (TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4.5V @ 50µA
Rds on (Max) @ id, vgs3Ohm @ 1.25A, 10V
Gate charge (Qg) (Max) @ vgs17 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds386 pF @ 50 V

Product details

The 17 nC gate charge keeps switching losses manageable in offline flyback converters, PFC stages, and auxiliary power supplies where the 620 V drain-source voltage provides margin for universal AC input rectified rails.

At full 2.5 A load, conduction loss hits about 19 W at 25 °C junction, which eats into the 45 W power dissipation budget — so the thermal design needs a decent heatsink on the TO-220 tab.

Obsolete — sourcing the STP3LN62K3 today

STMicroelectronics lists the STP3LN62K3 as obsolete.

Frequently asked questions

What is the replacement for STP3LN62K3?

For a drop-in replacement, a parametric search for a 620 V N-channel MOSFET in TO-220 with similar Rds(on) and gate charge is the practical route — the SuperMESH3 family has several active siblings, but pin compatibility and thermal performance should be verified against the original design.

What is the Rds(on) of STP3LN62K3?

The maximum on-resistance is 3 Ohm at 1.25 A drain current with 10 V gate drive.

What is the Vgs(th) of STP3LN62K3?

The maximum gate threshold voltage is 4.5 V at 50 µA drain current.