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

Toshiba Semiconductor and Storage TK5P53D(T6RSS-Q)

Name: TK5P53D(T6RSS-Q)
Brand: Toshiba Semiconductor and Storage
SKU: TK5P53D(T6RSS-Q)
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TK5P53D(T6RSS-Q)

Manufacturer:: Toshiba Semiconductor and Storage

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: TK5P53D(T6RSS-Q).pdf

Description:: MOSFET N-CH 525V 5A DPAK

Quantity:: RFQ Add To RFQ list

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Inventory:1,710

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Product details

Overview

TK5P53D(T6RSS-Q) from Toshiba Electronic Devices & Storage Corporation is a silicon N-channel power MOSFET in DPAK (TO-252) package, designed for high-voltage switching applications. It delivers R_DS(ON) = 1.2 Ω (typ.), V_DSS = 525 V, and I_D = 5 A (DC), operating as a main switch in offline SMPS and DC-DC converters.

For engineers reviewing the TK5P53D(T6RSS-Q) datasheet, TK5P53D(T6RSS-Q) pinout, TK5P53D(T6RSS-Q) application, or TK5P53D(T6RSS-Q) equivalent, key selection criteria include avalanche energy rating (E_AS = 142 mJ), gate threshold voltage range (2.4–4.4 V), thermal resistance (R_th(ch-c) = 1.56 °C/W), and diode reverse recovery performance (t_rr = 1000 ns).

Technical Context

This enhancement-mode MOSFET uses π-MOSⅣ process technology to achieve low on-resistance and high forward transfer admittance (|Y_fs| = 2.8 S typ.). Its 525 V drain-source breakdown voltage supports universal-input AC-DC adapters and industrial power supplies.

The device features integrated body diode with Q_rr = 6 µC and t_rr = 1000 ns under specified test conditions, enabling reliable hard-switching operation. Gate charge parameters (Q_g = 11 nC, Q_gd = 5 nC) support efficient gate drive design in 65–100 kHz SMPS topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	525 V - Supports 400 V DC bus designs with 30% margin for surge transients in offline SMPS.
R_DS(ON)	1.2 Ω (typ.) at V_GS = 10 V - Enables <1.5 W conduction loss at 5 A DC, reducing heatsink requirements.
I_D (DC)	5 A - Rated for continuous current in compact DPAK packages with PCB copper area ≥ 20 cm².
E_AS	142 mJ - Guarantees single-pulse avalanche robustness during overvoltage events without failure.
t_r/t_f	18 ns / 8 ns - Fast switching transitions minimize overlap loss in hard-switched flyback and forward converters.
C_iss/C_oss	540 pF / 60 pF - Low output capacitance improves efficiency in high-frequency resonant and quasi-resonant topologies.
V_th	2.4–4.4 V - Ensures clean turn-on with standard 5 V or 3.3 V logic-level gate drivers.

Pinout & Package

TK5P53D(T6RSS-Q) is housed in a surface-mount DPAK (JEDEC TO-252) package with exposed drain pad for thermal conduction. The package weighs 0.36 g and complies with RoHS directives.

Pin/Terminal	Circuit Role	Design Meaning
1: Gate	Control terminal	Receives gate drive signal; requires ≤±30 V bias; sensitive to ESD-must be handled with anti-static precautions.
2: Drain (Heatsink)	High-side power terminal	Connected to high-voltage rail; electrically and thermally coupled to exposed metal tab-requires isolation from other layers.
3: Source	Reference/return path	Serves as common reference for gate drive and current sensing; connects to power ground or source of synchronous rectifier.

Key Features

Feature	Design Value
Low R_DS(ON)	1.2 Ω typ. reduces conduction losses by >25% vs. comparable 500 V MOSFETs in same package.
High \|Y_fs\|	2.8 S typ. enables fast channel response and stable gain in current-mode control loops.
Avalanche-rated	Guaranteed 142 mJ single-pulse energy allows safe operation under inductive load switching stress.
Low leakage	IDSS ≤ 10 µA at 525 V ensures minimal standby power loss in always-on auxiliary supplies.
Thermally optimized	R_th(ch-c) = 1.56 °C/W permits 80 W dissipation with 125 °C case temperature rise-ideal for compact layouts.

Applications

AC-DC Adapters	Industrial DC-DC Converters
Use Scenario: Universal-input (90–264 V_AC) 36 W flyback adapter for consumer electronics. IC Role / Device Role / Timing Role: Primary-side switching transistor handling 525 V blocking and 5 A peak current. Use Value: 1.2 Ω R_DS(ON) limits conduction loss to <1.2 W at full load, enabling passive cooling.	Use Scenario: 48 V input, 12 V/5 A isolated forward converter in factory automation PLC power supply. IC Role / Device Role / Timing Role: Main switch operating at 65 kHz with 50% duty cycle and 525 V transient tolerance. Use Value: 142 mJ E_AS withstands 100 V overshoot during transformer reset without derating.
LED Driver Power Stages	UPS Hold-Up Circuits
Use Scenario: Constant-current buck-boost LED driver for street lighting (input 200–400 V_DC). IC Role / Device Role / Timing Role: High-side switch controlling inductor current in continuous conduction mode. Use Value: 1000 ns t_rr and 6 µC Q_rr minimize switching loss and EMI during diode commutation.	Use Scenario: Backup hold-up switch in 24 V UPS maintaining output during 10 ms AC dropout. IC Role / Device Role / Timing Role: Low-loss series pass element activated during mains failure. Use Value: 5 A DC rating and 1.56 °C/W thermal resistance allow sustained 24 V/5 A delivery without forced air.

AC-DC Adapters

Industrial DC-DC Converters

Use Scenario: Universal-input (90–264 V_AC) 36 W flyback adapter for consumer electronics.

IC Role / Device Role / Timing Role: Primary-side switching transistor handling 525 V blocking and 5 A peak current.

Use Value: 1.2 Ω R_DS(ON) limits conduction loss to <1.2 W at full load, enabling passive cooling.

Use Scenario: 48 V input, 12 V/5 A isolated forward converter in factory automation PLC power supply.

IC Role / Device Role / Timing Role: Main switch operating at 65 kHz with 50% duty cycle and 525 V transient tolerance.

Use Value: 142 mJ E_AS withstands 100 V overshoot during transformer reset without derating.

LED Driver Power Stages

UPS Hold-Up Circuits

Use Scenario: Constant-current buck-boost LED driver for street lighting (input 200–400 V_DC).

IC Role / Device Role / Timing Role: High-side switch controlling inductor current in continuous conduction mode.

Use Value: 1000 ns t_rr and 6 µC Q_rr minimize switching loss and EMI during diode commutation.

Use Scenario: Backup hold-up switch in 24 V UPS maintaining output during 10 ms AC dropout.

IC Role / Device Role / Timing Role: Low-loss series pass element activated during mains failure.

Use Value: 5 A DC rating and 1.56 °C/W thermal resistance allow sustained 24 V/5 A delivery without forced air.

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
STP5NK50ZFP	500 V V_DSS, R_DS(ON) = 1.4 Ω, Zener-protected gate, TO-220FP package	Lower voltage rating limits use in 400 V DC bus designs; through-hole mounting increases board space	Prefer when gate protection and legacy through-hole assembly are required over surface-mount density.
IXTP5N50P	500 V V_DSS, R_DS(ON) = 1.3 Ω, TO-220 package, no guaranteed avalanche rating	Lacks specified E_AS; unsuitable for unclamped inductive switching without external snubbers	Select only in low-energy, clamped topologies where avalanche stress is absent or externally managed.

Compared with STP5NK50ZFP and IXTP5N50P, TK5P53D(T6RSS-Q) offers higher 525 V blocking, surface-mount DPAK packaging, and guaranteed 142 mJ avalanche capability-making it optimal for space-constrained, high-reliability offline SMPS where transient robustness is critical.

Availability

TK5P53D(T6RSS-Q) is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC-DC converters, and LED driver power stages requiring stable component supply across extended production lifecycles.

Supply support for TK5P53D(T6RSS-Q) 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 Japanese semiconductor manufacturer specializing in power devices, logic ICs, and storage solutions, with decades of expertise in discrete power MOSFET design.

The TK5P53D(T6RSS-Q) belongs to Toshiba's π-MOSⅣ family-engineered for high-efficiency, high-voltage switching in compact surface-mount power supplies targeting industrial and consumer markets.

FAQ

What is the maximum gate-source voltage rating for TK5P53D(T6RSS-Q)?

The absolute maximum gate-source voltage (V_GSS) for TK5P53D(T6RSS-Q) is ±30 V. Exceeding this rating risks permanent gate oxide damage. Designers must ensure gate drive circuits limit transient spikes using clamping zeners or RC snubbers, especially in high-dV/dt environments like flyback transformers. The TK5P53D(T6RSS-Q) gate is highly sensitive to electrostatic discharge and requires proper ESD handling during assembly.

Does TK5P53D(T6RSS-Q) have a specified avalanche energy rating?

Yes, TK5P53D(T6RSS-Q) has a guaranteed single-pulse avalanche energy rating of E_AS = 142 mJ (T_ch = 25 °C). This value is measured under defined conditions (V_DD = 90 V, L = 9.72 mH, R_G = 25 Ω, I_AR = 5 A) and confirms robustness against inductive switching stress. The TK5P53D(T6RSS-Q) does not specify repetitive avalanche energy beyond the pulsed rating.

What is the typical gate threshold voltage range for TK5P53D(T6RSS-Q)?

The gate threshold voltage (V_th) for TK5P53D(T6RSS-Q) is specified from 2.4 V to 4.4 V at V_DS = 10 V and I_D = 1 mA. This range ensures reliable turn-on with standard 5 V microcontroller outputs or dedicated gate drivers, while avoiding false triggering from noise. The TK5P53D(T6RSS-Q) exhibits consistent V_th behavior across temperature, supporting stable operation from –55 °C to 150 °C channel temperature.

Can TK5P53D(T6RSS-Q) be used in synchronous rectification topologies?

No-TK5P53D(T6RSS-Q) is a standard N-channel enhancement-mode MOSFET optimized for high-side switching, not synchronous rectification. Its body diode reverse recovery time (t_rr = 1000 ns) and charge (Q_rr = 6 µC) are not optimized for low-loss freewheeling. For synchronous rectification, dedicated low-V_F, fast-recovery MOSFETs such as the TK11A50D are recommended instead of TK5P53D(T6RSS-Q).

What thermal resistance values apply to TK5P53D(T6RSS-Q) in its DPAK package?

TK5P53D(T6RSS-Q) specifies R_th(ch-c) = 1.56 °C/W (maximum) for channel-to-case and R_th(ch-a) = 125 °C/W (maximum) for channel-to-ambient. These values assume standard JEDEC PCB layout (1 inch² copper, 2 oz, 1 layer). The TK5P53D(T6RSS-Q) drain tab is electrically connected to the die and must be soldered to a thermal pad for effective heat transfer-failure to do so degrades R_th(ch-c) performance significantly.

TK5P53D(T6RSS-Q) Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 525 V

Current - Continuous Drain (Id) @ 25°C:: 5A (Ta)

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

Rds On (Max) @ Id, Vgs:: 1.5Ohm @ 2.5A, 10V

Vgs(th) (Max) @ Id:: 4.4V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 11 nC @ 10 V

Vgs (Max):: ±30V

Input Capacitance (Ciss) (Max) @ Vds:: 540 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 80W (Tc)

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

TK5P53D(T6RSS-Q) FAQ

1.How can I place an order for TK5P53D(T6RSS-Q) through Aetrix?

Please submit a Request for Quotation (RFQ) for TK5P53D(T6RSS-Q) 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 TK5P53D(T6RSS-Q) reliable?

The price and inventory of TK5P53D(T6RSS-Q) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TK5P53D(T6RSS-Q) is usually 5 days.

3.What payment methods are accepted for TK5P53D(T6RSS-Q)?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TK5P53D(T6RSS-Q) transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TK5P53D(T6RSS-Q)?

TK5P53D(T6RSS-Q) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TK5P53D(T6RSS-Q) 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 TK5P53D(T6RSS-Q)?

For technical support, including TK5P53D(T6RSS-Q) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TK5P53D(T6RSS-Q) requirements.

6.How does Aetrix verify that TK5P53D(T6RSS-Q) is sourced from the original manufacturer or authorized distributors?

All TK5P53D(T6RSS-Q) 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 TK5P53D(T6RSS-Q) meets industry standards.

7.What is the process for return or replacement of TK5P53D(T6RSS-Q)?

All TK5P53D(T6RSS-Q) units undergo pre-shipment inspection (PSI). If there is an issue with TK5P53D(T6RSS-Q), 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 TK5P53D(T6RSS-Q) part is unused and in its original packaging.

Return procedure for TK5P53D(T6RSS-Q):

1.Submit a request within 90 days.

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

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