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

Toshiba Semiconductor and Storage TK14A65W5,S5X

Name: TK14A65W5,S5X
Brand: Toshiba Semiconductor and Storage
SKU: TK14A65W5,S5X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TK14A65W5,S5X

Manufacturer:: Toshiba Semiconductor and Storage

Category:: FETs, MOSFETs

Package:: TO-220-3 Full Pack

Datasheet:: TK14A65W5,S5X.pdf

Description:: MOSFET N-CH 650V 13.7A TO220SIS

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Product details

Overview

TK14A65W5,S5X from Toshiba Electronic Devices & Storage Corporation is a silicon N-channel super-junction MOSFET designed for high-voltage switching in offline SMPS and PFC stages. It delivers 650 V V_DSS, 13.7 A I_D (DC), R_DS(ON) = 0.25 Ω (typ.), and fast reverse recovery (t_rr = 100 ns typ.) - enabling efficient, compact 65–100 W AC/DC adapters and industrial power supplies.

For engineers reviewing the TK14A65W5,S5X datasheet, TK14A65W5,S5X pinout, TK14A65W5,S5X application, or TK14A65W5,S5X equivalent, key selection criteria include its TO-220SIS package with isolated heatsink, DTMOS™-enabled low conduction loss, avalanche ruggedness (E_AS = 231 mJ), and gate threshold compatibility with standard 10 V drive circuits.

Technical Context

This device implements Toshiba's DTMOS™ IV super-junction architecture to achieve high breakdown voltage with low on-resistance and reduced Q_g (40 nC typ.). Its internal body diode exhibits controlled reverse recovery (Q_rr = 0.6 µC typ., t_rr = 100 ns) - critical for reducing switching losses and EMI in continuous-conduction-mode (CCM) PFC and QR flyback topologies.

The TK14A65W5,S5X features enhancement-mode operation (V_th = 3–4.5 V), ±30 V V_GSS rating, and guaranteed avalanche capability under single-pulse conditions (I_AR = 3.7 A, E_AS = 231 mJ). Thermal design is supported by R_th(ch-c) = 3.13 °C/W and isolation voltage of 2000 V_RMS, enabling direct-mount heatsinking without additional insulation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	650 V - supports universal-input (85–265 V_AC) offline converters with margin against line surges and ringing.
R_DS(ON)	0.25 Ω (typ.) at V_GS = 10 V - reduces conduction loss in 13.7 A DC applications, enabling <1.5 W dissipation at full load.
t_rr	100 ns (typ.) - minimizes diode reverse recovery loss and associated voltage spikes in hard-switched topologies.
E_AS	231 mJ (single-pulse) - ensures robustness against inductive energy transients during overcurrent or short-circuit events.
C_iss	1300 pF (at V_DS = 300 V) - enables predictable gate drive requirements and stable switching with standard 10–25 Ω gate resistors.
V_th	3–4.5 V - compatible with 3.3 V/5 V logic-level controllers and provides noise-immune turn-on with sufficient margin below 5 V.
Q_g	40 nC (typ.) - balances switching speed and drive loss; enables 100–200 kHz operation with moderate gate driver ICs.

Pinout & Package

Package: TO-220SIS (JEITA SC-67 / Toshiba 2-10U1S), featuring electrically isolated metal tab rated for 2000 V_RMS - allows direct mounting to heatsink without insulating pads or hardware.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control terminal	Receives gate drive signal; requires ≤±30 V swing; low input capacitance (C_iss = 1300 pF) eases drive design.
2 (Drain)	High-side power output	Connected to primary winding or bus rail; rated for 650 V blocking and avalanche energy absorption.
3 (Source)	Power return reference	Serves as local ground reference for gate drive; ties to source of external driver or controller IC.

Key Features

Feature	Design Value
DTMOS™ Super-Junction Structure	Enables 650 V rating with 0.25 Ω R_DS(ON), reducing conduction loss by >30% vs. planar MOSFETs at same voltage class.
Fast Body Diode Recovery	t_rr = 100 ns (typ.) and Q_rr = 0.6 µC (typ.) - suppresses voltage overshoot and EMI in bridgeless PFC and synchronous rectification.
Isolated Heatsink Mounting	2000 V_RMS isolation between drain and tab - eliminates need for thermal pads or insulators in compact, cost-sensitive designs.
Enhancement-Mode Gate Threshold	V_th = 3–4.5 V - ensures reliable turn-on with industry-standard PWM controllers while rejecting noise up to 2 V.
Avalanche-Rated Operation	Guaranteed E_AS = 231 mJ - permits safe operation under unclamped inductive switching, simplifying protection circuitry.

Applications

Server PSU Primary Switch	Industrial AC/DC Adapter
Use Scenario: High-efficiency 1 kW server power supply operating in CCM PFC + LLC resonant topology. IC Role / Device Role / Timing Role: Main switch in boost PFC stage handling 13.7 A RMS current at 65–100 kHz. Use Value: Low R_DS(ON) and fast t_rr reduce total losses by ~1.2 W per device versus legacy 600 V MOSFETs, improving system efficiency to >96%.	Use Scenario: 65 W industrial AC/DC adapter with universal input and reinforced isolation. IC Role / Device Role / Timing Role: Primary-side switch in quasi-resonant flyback converter with 65 kHz switching frequency. Use Value: Isolated TO-220SIS package enables direct heatsink mounting without creepage/clearance compromises, saving PCB area and BOM cost.
LED Driver Power Stage	UPS Inverter Half-Bridge
Use Scenario: Constant-current LED driver for street lighting with active PFC and 100–200 W output. IC Role / Device Role / Timing Role: High-side switch in interleaved boost PFC, operating at 70 kHz with 10 A peak current. Use Value: Controlled Q_rr and dv/dt ruggedness (>50 V/ns) prevent false triggering and improve reliability under high-temperature ambient conditions.	Use Scenario: 1 kVA online UPS inverter stage converting 400 V DC bus to 230 V AC output. IC Role / Device Role / Timing Role: Upper switch in half-bridge configuration driving transformer primary with 13.7 A pulsed current. Use Value: Single-pulse avalanche rating (E_AS = 231 mJ) absorbs energy from transformer leakage inductance during dead-time transitions.

Server PSU Primary Switch

Industrial AC/DC Adapter

Use Scenario: High-efficiency 1 kW server power supply operating in CCM PFC + LLC resonant topology.

IC Role / Device Role / Timing Role: Main switch in boost PFC stage handling 13.7 A RMS current at 65–100 kHz.

Use Value: Low R_DS(ON) and fast t_rr reduce total losses by ~1.2 W per device versus legacy 600 V MOSFETs, improving system efficiency to >96%.

Use Scenario: 65 W industrial AC/DC adapter with universal input and reinforced isolation.

IC Role / Device Role / Timing Role: Primary-side switch in quasi-resonant flyback converter with 65 kHz switching frequency.

Use Value: Isolated TO-220SIS package enables direct heatsink mounting without creepage/clearance compromises, saving PCB area and BOM cost.

LED Driver Power Stage

UPS Inverter Half-Bridge

Use Scenario: Constant-current LED driver for street lighting with active PFC and 100–200 W output.

IC Role / Device Role / Timing Role: High-side switch in interleaved boost PFC, operating at 70 kHz with 10 A peak current.

Use Value: Controlled Q_rr and dv/dt ruggedness (>50 V/ns) prevent false triggering and improve reliability under high-temperature ambient conditions.

Use Scenario: 1 kVA online UPS inverter stage converting 400 V DC bus to 230 V AC output.

IC Role / Device Role / Timing Role: Upper switch in half-bridge configuration driving transformer primary with 13.7 A pulsed current.

Use Value: Single-pulse avalanche rating (E_AS = 231 mJ) absorbs energy from transformer leakage inductance during dead-time transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP14NK60ZFP	R_DS(ON) = 0.38 Ω (typ.), higher Q_g = 55 nC, non-isolated TO-220FP package.	Lacks 2000 V_RMS isolation; requires insulated mounting hardware and increases thermal resistance.	Preferred where board space permits added insulation and lower-cost sourcing is prioritized over thermal simplicity.
IXTH14N65X2	R_DS(ON) = 0.27 Ω (typ.), t_rr = 120 ns (typ.), TO-247 package with non-isolated tab.	Higher switching loss due to slower diode recovery; larger footprint and no integrated isolation.	Chosen when higher peak current (14 A) and ruggedness outweigh layout and thermal integration benefits of TK14A65W5,S5X.

Compared with STP14NK60ZFP and IXTH14N65X2, the TK14A65W5,S5X offers superior thermal integration via isolated TO-220SIS, lower conduction loss, and faster diode recovery - making it optimal for space-constrained, high-efficiency offline power supplies where heatsink mounting simplicity and EMI control are critical.

Availability

TK14A65W5,S5X is available at Aetrix Electronics and suitable for server PSUs, industrial AC/DC adapters, LED drivers, and UPS inverters requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for TK14A65W5,S5X 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

Toshiba Electronic Devices & Storage Corporation is a global semiconductor manufacturer specializing in power devices, logic ICs, and storage solutions, with core expertise in silicon power MOSFETs and IGBTs.

The TK14A65W5,S5X belongs to Toshiba's DTMOS™ IV super-junction MOSFET product line, engineered specifically for high-efficiency, high-reliability offline power conversion in industrial and computing applications.

FAQ

What is the maximum continuous drain current for TK14A65W5,S5X at T_c = 25 °C?

The TK14A65W5,S5X supports a maximum continuous drain current (I_D) of 13.7 A at case temperature T_c = 25 °C. This rating assumes proper heatsinking and adherence to the channel temperature limit of 150 °C. Derating is required above 25 °C case temperature per the R_th(ch-c) = 3.13 °C/W thermal resistance specification.

Does TK14A65W5,S5X have an electrically isolated package?

Yes, the TK14A65W5,S5X uses the TO-220SIS package with 2000 V_RMS isolation between the drain and the metal tab. This allows direct mechanical mounting to a heatsink without thermal interface pads or insulating hardware - a key differentiator from standard TO-220 or TO-220FP variants.

What is the typical gate charge requirement for TK14A65W5,S5X?

The TK14A65W5,S5X has a typical total gate charge (Q_g) of 40 nC at V_DD ≈ 400 V and I_D = 13.7 A. This value enables efficient switching at 100–200 kHz using common gate driver ICs like the UCC27531 or TC4420 with 10–25 Ω series resistance.

How does the body diode performance of TK14A65W5,S5X compare to standard MOSFETs?

The TK14A65W5,S5X features a fast-recovery body diode with t_rr = 100 ns (typ.) and Q_rr = 0.6 µC (typ.), significantly better than conventional 650 V planar MOSFETs. This reduces switching loss and voltage overshoot in hard-switched and quasi-resonant topologies where the body diode conducts during dead time.

Is TK14A65W5,S5X compliant with RoHS directives?

Yes, the TK14A65W5,S5X is RoHS-compliant per EU Directive 2011/65/EU. The marking indicates [[G]]/RoHS COMPATIBLE or [[G]]/RoHS [[Pb]], and environmental compliance details are confirmed in Toshiba's official product documentation and material declarations.

TK14A65W5,S5X Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: DTMOSIV

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 650 V

Current - Continuous Drain (Id) @ 25°C:: 13.7A (Ta)

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

Rds On (Max) @ Id, Vgs:: 300mOhm @ 6.9A, 10V

Vgs(th) (Max) @ Id:: 4.5V @ 690µA

Gate Charge (Qg) (Max) @ Vgs:: 40 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 1300 pF @ 300 V

FET Feature:: -

Power Dissipation (Max):: 40W (Tc)

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220SIS

TK14A65W5,S5X FAQ

1.How can I place an order for TK14A65W5,S5X through Aetrix?

Please submit a Request for Quotation (RFQ) for TK14A65W5,S5X 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 TK14A65W5,S5X reliable?

The price and inventory of TK14A65W5,S5X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TK14A65W5,S5X is usually 5 days.

3.What payment methods are accepted for TK14A65W5,S5X?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TK14A65W5,S5X transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TK14A65W5,S5X?

TK14A65W5,S5X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TK14A65W5,S5X 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 TK14A65W5,S5X?

For technical support, including TK14A65W5,S5X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TK14A65W5,S5X requirements.

6.How does Aetrix verify that TK14A65W5,S5X is sourced from the original manufacturer or authorized distributors?

All TK14A65W5,S5X 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 TK14A65W5,S5X meets industry standards.

7.What is the process for return or replacement of TK14A65W5,S5X?

All TK14A65W5,S5X units undergo pre-shipment inspection (PSI). If there is an issue with TK14A65W5,S5X, 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 TK14A65W5,S5X part is unused and in its original packaging.

Return procedure for TK14A65W5,S5X:

1.Submit a request within 90 days.

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

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