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STMicroelectronics STD27N3LH5 — Discrete Semiconductors

STD27N3LH5 N-Channel MOSFET, 30V 27A DPAK, STripFET V

MPNSTD27N3LH5
Obsolete

STMicroelectronics STripFET™ V series, N-Channel MOSFET, 30 V drain-source, 27 A continuous drain at 25°C, 19 mOhm Rds(on) at 10 V, DPAK (TO-252) surface-mount package, -55°C to 175°C junction temperature.

STMicroelectronics STD27N3LH5 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD27N3LH5 specifications
ParameterValue
SeriesSTripFET™ V
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°C27A (Tc)
Power dissipation30W (Tc)
Operating temperature-55°C~175°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
Vgs±22V
TechnologyMOSFET (Metal Oxide)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Vgs(th) (Max) @ id1V @ 250µA
Rds on (Max) @ id, vgs19mOhm @ 13.5A, 10V
Gate charge (Qg) (Max) @ vgs4.6 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds475 pF @ 25 V

Product details

30 V, 27 A N-channel in DPAK — the STripFET V power switch

The 4.6 nC gate charge at 5 V is low enough that a simple gate driver or even a logic-level output can switch it at hundreds of kHz without excessive drive losses.

Lifecycle reality — obsolete, but still sourced

That means no further factory orders are accepted, and last-time-buy windows have closed. For BOM lines already qualified to this part, the only supply channel is independent distribution — surplus inventory, factory overruns, or stock from decommissioned projects.

Frequently asked questions

Is STD27N3LH5 obsolete?

Yes, STMicroelectronics lists the STD27N3LH5 as obsolete. No further factory production is planned. The part is available only through independent distribution channels such as surplus stock or broker inventory.

Can I use STD27N3LH5 in a 12V circuit?

Yes. The drain-to-source voltage rating is 30 V, which provides ample margin for a 12 V rail. The gate threshold is 1 V maximum at 250 µA, and the drive voltage range (4.5 V to 10 V) covers logic-level and standard gate drive levels used in 12 V systems.

What is the replacement for STD27N3LH5?

STMicroelectronics has not published an official replacement order code for the STD27N3LH5. A pin-compatible alternative would need to match the DPAK (TO-252) footprint, 30 V drain rating, 27 A continuous current, and 19 mOhm on-resistance at 10 V. Parametric search tools or a cross-reference from a distributor can identify candidates from the STripFET family or other vendors.