Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

STMicroelectronics STP2NK100Z

Name: STP2NK100Z
Brand: STMicroelectronics
SKU: STP2NK100Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STP2NK100Z

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: STP2NK100Z.pdf

Description:: MOSFET N-CH 1000V 1.85A TO220AB

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:164

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STP2NK100Z from STMicroelectronics is a Zener-protected N-channel SuperMESH Power MOSFET rated for 1000 V drain-source voltage, 6.25 Ω typical R_DS(on), and 1.85 A continuous drain current at T_C = 25 °C, designed for high-voltage switching in offline SMPS, AC-DC adapters, and industrial power supplies.

For engineers reviewing the STP2NK100Z datasheet, STP2NK100Z pinout, STP2NK100Z application, or STP2NK100Z equivalent, key selection criteria include its 100% avalanche-tested ruggedness, low gate charge (16 nC), high dv/dt immunity (2.5 V/ns), and IPAK (TO-251) thermal performance (R_thJC = 1.79 °C/W).

Technical Context

This device implements ST's SuperMESH process-a refined iteration of PowerMESH-delivering reduced on-resistance while maintaining robust unclamped inductive switching capability. Its integrated gate-source Zener diode provides ±30 V transient protection without external components.

The MOSFET exhibits low intrinsic capacitance (C_iss = 499 pF, C_oss = 53 pF) and fast switching (t_d(off) = 41.5 ns, t_f = 32.5 ns), enabling high-frequency operation in flyback and resonant converters where EMI and efficiency are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	1000 V - supports direct rectified mains input in universal-input AC-DC designs up to 265 V_AC.
R_DS(on) max	8.5 Ω - ensures low conduction loss at 1.85 A, with typical value 6.25 Ω improving thermal margin.
Q_g	16 nC - enables efficient gate drive with standard 10 V logic-level controllers and reduces driver power dissipation.
E_AS	170 mJ - guarantees reliable energy absorption during unclamped inductive switching events without failure.
dv/dt rating	2.5 V/ns - sustains stable operation under high-slew-rate transients common in hard-switched topologies.
R_thJC	1.79 °C/W - allows 70 W power dissipation at T_C = 25 °C, supporting compact heatsink integration.
V_GS(th)	3.0–4.5 V - compatible with standard 5 V or 10 V gate drivers; avoids spurious turn-on near ground potential.

Pinout & Package

STP2NK100Z is housed in an IPAK (TO-251) package with exposed tab for thermal and electrical connection to drain. The three-terminal configuration places Gate (G), Drain (D), and Source (S) on leads 1, 2 (tab), and 3 respectively.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal; accepts 0–10 V logic-level drive; protected by integrated Zener diode.
2 (TAB/D)	Drain	Main high-voltage power terminal; electrically and thermally connected to metal tab for PCB heat sinking.
3 (S)	Source	Reference node for gate drive and current sensing; forms return path for load current.

Key Features

Feature	Design Value
100% avalanche tested	Every unit validated for single-pulse E_AS = 170 mJ, ensuring field reliability in inductive switching.
Zener-protected gate	Integrated ±30 V gate-source clamp eliminates need for external TVS, reducing BOM count and layout area.
SuperMESH technology	Optimized cell structure lowers R_DS(on) by ~25% vs prior PowerMESH, improving conduction efficiency at high voltage.
Low C_oss & C_rss	C_oss = 53 pF and C_rss = 9 pF minimize Miller effect, enabling cleaner turn-off and higher frequency operation.

Applications

Offline AC-DC Adapters

Flyback SMPS

Use Scenario: Universal-input (90–265 V_AC) 15–30 W adapter for consumer electronics.

IC Role / Device Role: Primary-side high-voltage switch in discontinuous conduction mode (DCM) flyback topology.

Use Value: 1000 V rating eliminates need for voltage clamping networks; low Q_g reduces gate driver losses at 65–100 kHz switching.

Use Scenario: Isolated 5–12 V output supply for industrial PLC I/O modules.

IC Role / Device Role: Main power switch in primary-side regulated flyback with optocoupler feedback.

Use Value: Avalanche ruggedness ensures survival during output short-circuit events; R_thJC = 1.79 °C/W supports natural-convection cooling.

LED Driver Ballasts

Industrial Motor Control

Use Scenario: Constant-current LED driver for street lighting operating directly from 230 V_AC mains.

IC Role / Device Role: High-side switch in buck-boost or SEPIC-derived topology handling 1000 V transients.

Use Value: Low C_iss (499 pF) minimizes capacitive coupling noise into analog current sense circuitry.

Use Scenario: Auxiliary power supply for gate drivers in 3-phase IGBT inverters.

IC Role / Device Role: Input-stage switch in isolated auxiliary DC-DC converter powering control logic.

Use Value: Zener-protected gate withstands coupling from high-di/dt motor phases; 150 °C T_J rating suits enclosed enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STD2NK100Z	DPAK package (smaller footprint, higher R_thJA = 125 °C/W); identical electrical specs.	Better suited for space-constrained PCBs where thermal via density supports junction-to-ambient cooling.	Select when board area is limited and forced-air cooling or dense thermal vias are available.
STW20NK100Z	TO-247 package; higher I_D = 20 A, same V_DS/R_DS(on); larger die, higher Q_g = 65 nC.	Targeted at >100 W industrial PSUs requiring higher current headroom and superior heatsinking.	Choose for higher-power systems needing scalable thermal design without topology change.

Compared with STD2NK100Z and STW20NK100Z, STP2NK100Z offers optimal balance of thermal performance (R_thJC = 1.79 °C/W), compact IPAK form factor, and gate drive simplicity-ideal for cost-sensitive 15–50 W offline converters where board real estate and heatsink volume are constrained.

Availability

STP2NK100Z is available at Aetrix Electronics and suitable for offline AC-DC adapters, flyback SMPS, and industrial LED ballasts requiring stable component supply across long-lifecycle production programs.

Supply support for STP2NK100Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, power, and microcontroller domains since 1987.

The SuperMESH Power MOSFET product line targets high-voltage switching applications demanding ruggedness, efficiency, and design simplicity-especially in cost-sensitive, high-reliability offline power conversion.

FAQ

Is STP2NK100Z pin-compatible with STU2NK100Z?

Yes-both share identical IPAK (TO-251) pinout: Gate (lead 1), Drain (tab/lead 2), Source (lead 3). Electrical specifications are identical; STP2NK100Z is the tube-packed version, while STU2NK100Z is tape-and-reel. No PCB redesign is needed for substitution.

What is the maximum recommended gate resistor for reliable switching?

A 4.7 Ω gate resistor is validated per datasheet test conditions (V_DD = 500 V, I_D = 0.9 A). For 100 kHz operation, values between 2.2 Ω and 10 Ω balance switching speed and gate oscillation damping; lower values require careful PCB layout to avoid ringing.

Does the integrated Zener protect against negative V_GS transients?

Yes-the gate-source Zener is bidirectional (±30 V), clamping both positive and negative transients. It is rated for 3 kV HBM ESD and protects against Miller-induced negative spikes during high-di/dt switching, eliminating need for external clamps.

Can STP2NK100Z replace STP16NF50 in a 24 V input system?

No-STP16NF50 is a 500 V, 16 A device optimized for low-voltage, high-current use. STP2NK100Z is a 1000 V, 1.85 A part optimized for high-voltage, low-current applications. Substitution would cause excessive conduction loss and thermal stress at 24 V due to its 6.25 Ω R_DS(on).

STP2NK100Z Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: SuperMESH™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 1000 V

Current - Continuous Drain (Id) @ 25°C:: 1.85A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 8.5Ohm @ 900mA, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 50µA

Gate Charge (Qg) (Max) @ Vgs:: 16 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 499 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 70W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STP2NK100Z FAQ

1.How can I place an order for STP2NK100Z through Aetrix?

Please submit a Request for Quotation (RFQ) for STP2NK100Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STP2NK100Z reliable?

The price and inventory of STP2NK100Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP2NK100Z is usually 5 days.

3.What payment methods are accepted for STP2NK100Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP2NK100Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP2NK100Z?

STP2NK100Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP2NK100Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STP2NK100Z?

For technical support, including STP2NK100Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP2NK100Z requirements.

6.How does Aetrix verify that STP2NK100Z is sourced from the original manufacturer or authorized distributors?

All STP2NK100Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STP2NK100Z meets industry standards.

7.What is the process for return or replacement of STP2NK100Z?

All STP2NK100Z units undergo pre-shipment inspection (PSI). If there is an issue with STP2NK100Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STP2NK100Z part is unused and in its original packaging.

Return procedure for STP2NK100Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…