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STMicroelectronics STD75N3LLH6 — Discrete Semiconductors

STD75N3LLH6 N-Channel MOSFET, 30 V, 75 A, DPAK

MPNSTD75N3LLH6
Obsolete

STMicroelectronics DeepGATE™, STripFET™ VI series, N-Channel MOSFET, STD75N3LLH6, 30 Vdss, 75 A continuous drain, 5.5 mOhm Rds(on) at 10 V, 17 nC gate charge at 4.5 V, DPAK package, -55°C to 175°C junction temperature.

$0.3411Ref. price · indicative, final on quote
STMicroelectronics STD75N3LLH6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD75N3LLH6 specifications
ParameterValue
SeriesDeepGATE™, STripFET™ VI
FET typeN-Channel
MountingSurface Mount
Drain to source voltage30 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C75A (Tc)
Power dissipation60W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTape & Reel (TR)
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Vgs(th) (Max) @ id2.5V @ 250µA
Rds on (Max) @ id, vgs5.5mOhm @ 37.5A, 10V
Gate charge (Qg) (Max) @ vgs17 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds1690 pF @ 25 V

Product details

The STD75N3LLH6: The low gate charge of 17 nC at 4.5 V makes it well suited for logic-level gate drive circuits in switching power supplies, DC-DC converters, and motor control applications where conduction loss and switching speed both matter.

The STD75N3LLH6 is listed as Obsolete. Any stock you find is existing inventory — franchised or independent — and once it is gone, it is gone. If you have a board that uses this part, you are looking at surplus-channel sourcing or a redesign with a pin-compatible alternative. The base product number is STD75N3, which can help search for remaining stock or cross-references.

Key ratings and the decisions they drive

The 30 V drain-to-source voltage rating sets the maximum rail this MOSFET can block. The 17 nC gate charge at 4.5 V means switching losses are manageable even with a modest gate driver.

Frequently asked questions

Is the STD75N3LLH6 obsolete?

Yes, the STD75N3LLH6 is listed as Obsolete. STMicroelectronics has discontinued production, and no further manufacturing is planned.

What is the replacement or equivalent for STD75N3LLH6?

For a pin-compatible alternative, look for other N-Channel MOSFETs in the DPAK (TO-252) package with similar 30 V Vdss, 75 A Id, and 5.5 mOhm Rds(on) ratings — but verify the gate charge and drive voltage characteristics for your specific switching application.