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

STMicroelectronics STP16NK65Z

Name: STP16NK65Z
Brand: STMicroelectronics
SKU: STP16NK65Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP16NK65Z

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: STP16NK65Z.pdf

Description:: MOSFET N-CH 650V 13A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:4,334

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Product details

Overview

STP16NK65Z from STMicroelectronics is an N-channel 650 V, 13 A, 0.38 Ω R_DS(on) SuperMESH™ power MOSFET in TO-220 package, featuring integrated gate-source Zener protection, 100% avalanche tested, and optimized for high-speed switching in offline SMPS primary-side applications.

For engineers reviewing the STP16NK65Z datasheet, STP16NK65Z pinout, STP16NK65Z application, or STP16NK65Z equivalent, key selection criteria include its 650 V V_DSS, 0.38 Ω R_DS(on) at V_GS = 10 V, 190 W P_TOT, 4.5 V/ns dv/dt capability, and built-in back-to-back gate-source Zener diodes for transient robustness.

Technical Context

This MOSFET employs ST's strip-based SuperMESH™ layout to minimize R_DS(on) while maximizing dv/dt immunity and avalanche ruggedness. Its internal structure integrates symmetrical gate-source Zener clamps (±30 V breakdown) to suppress ESD and gate transients without external components.

Designed for hard-switched flyback and resonant LLC converters, it delivers low C_iss (2750 pF), low Q_g (89 nC), and fast switching (t_d(on) = 25 ns, t_f = 17 ns) under 325 V DC bus conditions with 4.7 Ω gate resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	650 V - supports universal-input offline SMPS up to 380 V AC rectified peak
R_DS(on)	0.38 Ω (typ) at V_GS = 10 V - enables <1.5 W conduction loss at 13 A continuous drain current
I_D (T_C = 25°C)	13 A - rated for high-current primary-side switching with heatsink
P_TOT	190 W - allows high-power operation with R_thj-case = 0.66 °C/W
dv/dt Capability	4.5 V/ns - sustains fast voltage transitions during hard switching without spurious turn-on
E_AS	350 mJ - withstands unclamped inductive energy in single-pulse avalanche events
V_ESD(G-S)	6000 V HBM - eliminates need for external gate ESD protection circuitry

Pinout & Package

TO-220 package (3-pin, straight lead, insulated tab); pin 1 = Gate, pin 2 = Drain (tab), pin 3 = Source. Thermal pad electrically connected to Drain for efficient heat transfer and PCB mounting via isolated heatsink.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Gate	Control terminal; accepts 10 V logic-level drive; protected by integrated ±30 V Zener clamp
Pin 2	Drain	Main high-voltage power terminal; electrically connected to metal tab for thermal and electrical conduction
Pin 3	Source	Power return path; referenced to control ground; forms common node with gate driver return

Key Features

Feature	Design Value
SuperMESH™ Layout Optimization	Reduces R_DS(on) by >20% vs prior PowerMESH™ generation while preserving SOA integrity
100% Unclamped Avalanche Tested	Guarantees minimum 350 mJ single-pulse energy handling at T_j = 25°C
Integrated Back-to-Back Zener Diodes	Eliminates external gate protection components; clamps V_GS within ±30 V under transients
Low Gate Charge (Q_g = 89 nC)	Reduces driver power loss and enables use of cost-effective 1/2-W gate drivers in 100–300 kHz designs
High dv/dt Immunity (4.5 V/ns)	Prevents false triggering during fast V_DS slew in high-frequency resonant topologies

Applications

AC-DC Adapter Primary Switch

Flyback Converter Main Switch

Use Scenario: 65 W universal-input adapter operating at 65 kHz with 380 V DC bus.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer through transformer.

Use Value: 0.38 Ω R_DS(on) limits conduction loss to ≤1.3 W; 190 W P_TOT accommodates transient overloads.

Use Scenario: 150 W industrial flyback supply with active clamp snubber.

IC Role / Device Role / Timing Role: Main power switch turning on/off at zero-voltage transition points.

Use Value: 4.5 V/ns dv/dt rating prevents parasitic turn-on during snubber ringback; 350 mJ E_AS absorbs leakage inductance spikes.

LED Driver High-Voltage Switch

Server PSU Front-End Switch

Use Scenario: 100 W constant-current LED driver with PFC + flyback architecture.

IC Role / Device Role / Timing Role: Isolated secondary-side synchronous rectifier driver (used in high-side configuration).

Use Value: Integrated Zener protection ensures gate reliability across wide ambient temperature range (−40°C to +125°C).

Use Scenario: 80 PLUS Platinum server PSU using LLC resonant converter.

IC Role / Device Role / Timing Role: High-side switch in half-bridge LLC primary leg.

Use Value: Low C_oss (275 pF) and C_rss (60 pF) reduce dead-time losses and improve ZVS margin at 300–500 kHz.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP14NK65Z	650 V, 12 A, R_DS(on) = 0.42 Ω - slightly higher conduction loss, identical Zener protection and SOA	Lower current rating suits ≤120 W designs; same footprint and gate drive requirements	Select when lower cost or legacy BOM compatibility is prioritized over 1 A extra current headroom
IPP65R045CFD7	650 V, 13 A, R_DS(on) = 0.045 Ω - 8× lower R_DS(on), CoolMOS™ CFD7 technology, no integrated Zener	Requires external gate protection; superior efficiency above 100 kHz but higher gate charge (Q_g = 102 nC)	Choose for ultra-high-efficiency 200+ W servers where gate drive overhead and thermal margin justify added component count

Compared with STP14NK65Z, STP16NK65Z offers 0.04 Ω lower R_DS(on) and 1 A higher I_D; versus IPP65R045CFD7, it trades 8× lower conduction loss for integrated Zener robustness and simpler gate drive-critical for cost-sensitive industrial adapters.

Availability

STP16NK65Z is available at Aetrix Electronics and suitable for offline power supplies, LED drivers, and industrial motor control systems requiring stable component supply and long-term manufacturability.

Supply support for STP16NK65Z 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The SuperMESH™ MOSFET product line targets high-reliability, high-efficiency offline power conversion-specifically engineered for ruggedness in unclamped inductive switching and harsh EMI environments.

FAQ

Is STP16NK65Z RoHS-compliant and lead-free?

Yes. STP16NK65Z is manufactured in ECOPACK®-compliant TO-220 packaging with lead-free second-level interconnect, meeting JEDEC JESD97 standards. The inner box label indicates the eco-status, and maximum soldering temperature is specified per JEDEC Level 3 guidelines.

What is the maximum safe operating junction temperature?

The absolute maximum operating junction temperature is 150°C. Derating begins at 25°C case temperature with a factor of 1.51 W/°C; sustained operation above 135°C requires thermal modeling to ensure R_thj-case ≤ 0.66 °C/W is maintained under actual PCB and heatsink conditions.

Can STP16NK65Z be used without external gate resistors?

No. A gate resistor (typically 4.7 Ω) is required to control switching speed, damp ringing, and limit peak gate current. The datasheet specifies switching times (e.g., t_f = 17 ns) with RG = 4.7 Ω; omitting it risks overshoot, shoot-through, or gate driver damage due to high Q_g (89 nC) and low gate impedance.

Does the built-in Zener protect against negative V_GS transients?

Yes. The integrated back-to-back Zener diodes provide symmetrical clamping: +30 V and −30 V breakdown (BVGSO = 30 V, tested at I_GS = ±1 mA). This fully protects against both positive gate overvoltage and negative undershoot during fast turn-off or layout-induced coupling.

STP16NK65Z Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: SuperMESH™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 650 V

Current - Continuous Drain (Id) @ 25°C:: 13A (Tc)

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

Rds On (Max) @ Id, Vgs:: 500mOhm @ 6.5A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 100µA

Gate Charge (Qg) (Max) @ Vgs:: 89 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 2750 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 190W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STP16NK65Z FAQ

1.How can I place an order for STP16NK65Z through Aetrix?

Please submit a Request for Quotation (RFQ) for STP16NK65Z 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 STP16NK65Z reliable?

The price and inventory of STP16NK65Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP16NK65Z is usually 5 days.

3.What payment methods are accepted for STP16NK65Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP16NK65Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP16NK65Z?

STP16NK65Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP16NK65Z 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 STP16NK65Z?

For technical support, including STP16NK65Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP16NK65Z requirements.

6.How does Aetrix verify that STP16NK65Z is sourced from the original manufacturer or authorized distributors?

All STP16NK65Z 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 STP16NK65Z meets industry standards.

7.What is the process for return or replacement of STP16NK65Z?

All STP16NK65Z units undergo pre-shipment inspection (PSI). If there is an issue with STP16NK65Z, 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 STP16NK65Z part is unused and in its original packaging.

Return procedure for STP16NK65Z:

1.Submit a request within 90 days.

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

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