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STMicroelectronics STU4N52K3

STU4N52K3 N-Channel MOSFET, 525V 2.5A I-PAK - SuperMESH3

MPNSTU4N52K3
End of Life

STMicroelectronics SuperMESH3™ STU4N52K3, N-Channel MOSFET, 525 Vdss, 2.5 A continuous drain, 2.6 Ohm Rds(on) at 10 V, 11 nC gate charge, through-hole I-PAK (TO-251), 150°C junction temperature.

$1.34Ref. price · indicative, final on quote
STMicroelectronics STU4N52K3 datasheet (PDF)
PackagingTO-251-3 Short Leads, IPak, TO-251AA
RoHSROHS3 Compliant
SeriesSuperMESH3™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STU4N52K3 specifications
ParameterValue
SeriesSuperMESH3™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage525 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-251-3 Short Leads, IPak, TO-251AA
Vgs(th) (Max) @ id4.5V @ 50µA
Rds on (Max) @ id, vgs2.6Ohm @ 1.25A, 10V
Gate charge (Qg) (Max) @ vgs11 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds334 pF @ 100 V

Product details

525 V N-channel in a rework-friendly I-PAK

The STU4N52K3 is an N-channel MOSFET from STMicroelectronics' SuperMESH3™ series, rated for 525 V drain-source and 2.5 A continuous drain current. It comes in a through-hole I-PAK (TO-251) package with short leads, which means it sits low on the board and takes a hot-air station or soldering iron without lifting pads — useful for bench rework or field repair.

Gate charge and switching — what 11 nC means for the driver

Gate charge is 11 nC at 10 V. Input capacitance is 334 pF at 100 V Vds.

Package and mounting — I-PAK for single-hole through-hole

The I-PAK (TO-251) is a three-lead through-hole package with the tab as the drain. It mounts into a single hole on the PCB, which is quicker to hand-solder than a D²PAK reflow and easier to probe during bring-up. The short leads mean the part sits flush against the board — no bent-lead clearance issues.

Frequently asked questions

Where can I find the STU4N52K3 datasheet?

The datasheet is available from STMicroelectronics under the SuperMESH3™ series documentation. It covers the full electrical characteristics, thermal curves, and package dimensions for the I-PAK variant.

How do I get current pricing and availability for STU4N52K3?

Current pricing and stock levels are confirmed at quote time. Submit an RFQ through the storefront; availability is sourced through independent distribution channels and quoted to order.

Is STU4N52K3 RoHS compliant?

Yes, the STU4N52K3 is ROHS3 compliant per the lifecycle record.