Skip to main content
Log in
STMicroelectronics STP12NK30Z — Discrete Semiconductors

STP12NK30Z MOSFET, N-Channel 300V 9A TO-220, Active

MPNSTP12NK30Z
Active

STMicroelectronics SuperMESH™ STP12NK30Z, N-Channel MOSFET, 300V Vdss, 9A Id, 400mOhm Rds(on) @ 4.5A, 10V, TO-220-3, -55 to 150°C.

$2.6200Ref. price · indicative, final on quote
STMicroelectronics STP12NK30Z datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesSuperMESH™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STP12NK30Z specifications
ParameterValue
SeriesSuperMESH™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage300 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C9A (Tc)
Power dissipation90W (Tc)
Operating temperature-55°C~150°C(TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4.5V @ 50µA
Rds on (Max) @ id, vgs400mOhm @ 4.5A, 10V
Gate charge (Qg) (Max) @ vgs35 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds670 pF @ 25 V

Product details

300 V N-channel MOSFET in TO-220 — what this part is

The 400 mOhm maximum on-resistance at 4.5 A with a 10 V gate drive defines its conduction loss profile for switch-mode power supplies, offline converters, and motor-drive circuits. The TO-220 through-hole package suits point-of-load and bulk-power stages where heatsink mounting is standard.

The 400 mOhm Rds(on) at 4.5 A, 10 V is the figure to use for conduction-loss calculations in a 300 V bus application.

Active lifecycle — no LTB concern

No last-time-buy or end-of-life notice is in effect, making it suitable for both new-design-in and ongoing production BOMs. The SuperMESH™ series continues as a current portfolio line from STMicroelectronics.

Frequently asked questions

What is the Rds(on) of the STP12NK30Z?

The maximum on-resistance is 400 mOhm at a drain current of 4.5 A with a 10 V gate drive.

What is the closest pin-compatible alternative to the STP12NK30Z?

Within the same SuperMESH™ family, STMicroelectronics offers multiple 300 V N-channel TO-220 MOSFETs with varying current and Rds(on) ratings. The STP12NK30Z itself is the 9 A, 400 mOhm variant; a higher-current sibling would be a different order code. For a direct replacement, verify the target Rds(on) and current rating against your design margin — the TO-220 footprint is shared across the series.