Mfr Part #:

STW9NK70Z

N-Channel MOSFET with 700V drain-source voltage and 7.5A continuous current. Features low on-resistance of 1.2 Ohm at 4A, 10V.

✓ Total Stock: 27,025 pcs

$ Price Range: $2.56

STW9NK70Z Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Hybrid Electronics ✓ Non-Authorised Inventory information	18,420 pcs On Request	18420 pcs	On Request	1	On Request	On Request	838	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	8,052 pcs On Request	8052 pcs	On Request	1	On Request	On Request	15+	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	553 pcs On Request	553 pcs	On Request	1	On Request	On Request	09+	On Request	On Request

STW9NK70Z Description

Short technical summary and product information.

The STW9NK70Z is an N-Channel enhancement-mode MOSFET manufactured by STMicroelectronics. It is designed for high-voltage switching applications, featuring a maximum drain-source voltage of 700V and a continuous drain current of 7.5A at Tc. The device offers a low on-resistance of 1.2 Ohm maximum at 4A, 10V, minimizing conduction losses. With a gate charge of 68 nC at 10V, it enables fast switching transitions suitable for efficient power conversion.

The MOSFET is housed in a TO-247-3 package, a through-hole mounting format that provides robust thermal performance. It can dissipate up to 156W of power at Tc, making it suitable for applications that require high power handling. Typical applications include switch-mode power supplies, DC-DC converters, motor drives, and uninterruptible power supplies.

Key specifications include a threshold voltage of 4.5V maximum at 100µA, ensuring reliable gate drive levels. The device also features a maximum gate-source voltage rating of ±30V, providing margin for gate drive design. The input capacitance is 1370 pF at 25V, which should be considered for gate drive circuit design.

STW9NK70Z Quick Information

Product Type: MOSFET

Canonical Name: STW9NK70Z N-Channel MOSFET

Subcategory: N-Channel MOSFET

STW9NK70Z Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

STW9NK70Z Estimated Pricing

Qty	Low	High
1+	$2.56	$2.56

Estimated market price range - modelled values for guidance only, not live distributor offers.

STW9NK70Z Features

700V drain to source voltage rating.
7.5A continuous drain current capability.
Low on-resistance of 1.2 Ohm typical.
Fast switching with 68 nC gate charge.
156W power dissipation in TO247-3 package.

STW9NK70Z Applications

Switch mode power supply designs.
High voltage DC-DC converter stages.
Motor control and inverter circuits.
Uninterruptible power supply (UPS) systems.

STW9NK70Z FAQs

5 frequently asked questions generated from this part’s specifications.

What is the maximum drain-source voltage of the STW9NK70Z?

700 V

What is the continuous drain current rating?

7.5 A at Tc

What is the package type of the STW9NK70Z?

TO-247-3

What is the on-resistance of this MOSFET?

1.2 Ohm maximum at 4A, 10V

What is the gate charge of the STW9NK70Z?

68 nC maximum at 10V

Category	Transistors - FETs, MOSFETs - Single
Manufacturer Name	STMicroelectronics
Current	7.5 A
Drain to Source Voltage (Vdss)	700 V
Drive Voltage (Max Rds On, Min Rds On)	10V
FET Type	N-Channel
Gate Charge (Qg) (Max) @ Vgs	68 nC
Input Capacitance (Ciss) (Max) @ Vds	1370 pF
Mounting Type	Through Hole
Operating Temperature	-55°C ~ 150°C (TJ)
Power Dissipation (Max)	156 W
Rds On (Max) @ Id, Vgs	1.2 Ohm
Supplier Device Package	TO-247-3
Technology	MOSFET (Metal Oxide)
Vgs (Max)	±30V
Vgs(th) (Max) @ Id	4.5V