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STMicroelectronics STD2NK70Z-1 — Discrete Semiconductors

STD2NK70Z-1 N-Channel MOSFET, 700V, 1.6A, SuperMESH

MPNSTD2NK70Z-1
Obsolete

STMicroelectronics SuperMESH N-Channel MOSFET, 700V Vdss, 1.6A Id, 7 Ohm Rds(on) @ 800mA 10V, 11.4nC gate charge, TO-251 I-Pak, -55°C to 150°C junction.

STMicroelectronics STD2NK70Z-1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STD2NK70Z-1 specifications
ParameterValue
SeriesSuperMESH™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage700 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C1.6A (Tc)
Power dissipation45W (Tc)
Operating temperature-55°C~150°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, vgs7Ohm @ 800mA, 10V
Gate charge (Qg) (Max) @ vgs11.4 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds280 pF @ 25 V

Product details

The STD2NK70Z-1: The 7 Ohm maximum on-resistance at 800 mA and 10 V gate drive tells you this is a low-current, high-voltage switch — think auxiliary flyback supplies, offline bias rails, or discharge paths in PFC stages, not a main power switch. Housed in a through-hole TO-251 I-Pak, it's a three-lead device with a short-lead form factor that mates to a heatsink tab on the PCB.

150°C junction — built for hot environments

The 45 W power dissipation at case temperature gives some headroom for pulsed operation, but the 7 Ohm Rds(on) means continuous power dissipation will be limited by the package's ability to sink heat.

The STD2NK70Z-1 carries an Obsolete lifecycle status.

Frequently asked questions

Is STD2NK70Z-1 obsolete?

Buyers need to know if the part is end-of-life to plan for alternatives or last-time buy.

What is the replacement or equivalent for STD2NK70Z-1?

Sourcing buyers and maintenance techs must find a drop-in substitute if the original is unavailable.

Where can I buy STD2NK70Z-1 and what is the price?

Transactional buyers need verified stock and pricing to complete a purchase quickly.

What are the key specifications of STD2NK70Z-1?

Design engineers validate fit by checking Rds(on), Vgs, power dissipation, and package.

Does STD2NK70Z-1 have a known cross-reference part from other manufacturers?

Brokers and procurement need alternative brands to secure supply or negotiate pricing.

What is the pinout and package type of STD2NK70Z-1?

Maintenance techs replacing a failed unit must verify mechanical and electrical compatibility.