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

Renesas 2SK2109-T1-AZ

Name: 2SK2109-T1-AZ
Brand: Renesas
SKU: 2SK2109-T1-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SK2109-T1-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: TO-243AA

Datasheet:: 2SK2109-T1-AZ.pdf

Description:: 2SK2109-T1-AZ - N-CHANNEL MOS FE

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Product details

Overview

2SK2109-T1-AZ from Renesas Electronics is an N-channel vertical MOSFET designed for high-speed switching in low-voltage IC-driven circuits. It features R_DS(on) ≤ 1.0 Ω at V_GS = 4.0 V and I_D = 0.3 A, t_on + t_off < 100 ns, and a 60 V V_DSS rating - enabling use in DC/DC converters and small-motor actuator drivers.

For engineers reviewing the 2SK2109-T1-AZ datasheet, 2SK2109-T1-AZ pinout, 2SK2109-T1-AZ application, or 2SK2109-T1-AZ equivalent, key selection criteria include gate-threshold compatibility with 5 V logic outputs, low-conduction-loss operation at ≤0.5 A DC, and thermal performance on ceramic substrates up to 2.0 W.

Technical Context

This device operates as a single N-channel enhancement-mode power switch with integrated body diode and gate protection diode. Its vertical structure enables low R_DS(on) and minimized output capacitance (C_oss = 55 pF), supporting fast turn-on (t_d(on) = 2.2 ns) and turn-off (t_d(off) = 35 ns) under 10 Ω gate drive.

The 2SK2109-T1-AZ is characterized for operation at T_A = 25 °C with derating above 25 °C, and specifies V_GS(off) between 0.8 V and 2.0 V - indicating a logic-level-compatible threshold suitable for direct TTL/CMOS interface without level-shifting circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	60 V - supports operation in 24–48 V DC bus systems with margin against transients
R_DS(on) max	1.0 Ω @ V_GS = 4.0 V, I_D = 0.3 A - enables efficient low-current switching with minimal conduction loss
t_on + t_off	< 100 ns - ensures sub-10 MHz switching capability in compact DC/DC topologies
C_iss	111 pF - limits gate drive power requirement for 5 V microcontroller outputs
I_D(DC)	±0.5 A - defines continuous current handling for motor driver half-bridges or load switches
P_T	2.0 W on 16 cm² × 0.7 mm ceramic substrate - sets practical thermal limit for surface-mount PCB layouts
V_GS(off)	0.8–2.0 V - confirms reliable turn-off with standard 0 V logic low and compatibility with 3.3/5 V IO

Pinout & Package

2SK2109-T1-AZ is housed in a TO-236AB (SC-59) plastic package with gull-wing leads, measuring 4.5 × 2.5 × 1.6 mm (L × W × H). The package is optimized for manual and automated SMT assembly on standard FR-4 or ceramic substrates.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal accepting 0–20 V input; requires no external gate resistor for 5 V CMOS drive due to low C_iss
D	Drain	High-side switching node; connects to positive rail in low-side configuration or load return path in high-side
S	Source	Reference node tied to ground or floating return; internal body diode anode connects here

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced at V_GS ≥ 4.0 V - eliminates need for gate driver ICs when paired with 5 V microcontrollers
Low switching loss	t_r = 1.5 ns and t_f = 19 ns - reduces energy dissipation during transitions in PWM-controlled loads
Integrated gate protection	On-chip Zener diode clamps \|V_GS\| to ±20 V - prevents ESD-induced gate oxide failure during handling and board insertion
Thermally robust construction	Rated T_ch = 150 °C with 2.0 W dissipation on ceramic - supports operation in enclosed industrial enclosures without forced airflow

Applications

Motor Driver Stage	DC/DC Converter Switch
Use Scenario: Driving small brushed DC motors (e.g., cooling fans, positioning actuators) in office equipment and home appliances. IC Role / Device Role / Timing Role: Low-side switching element controlled by PWM from MCU GPIO pins. Use Value: R_DS(on) ≤ 1.0 Ω minimizes I²R heating at 0.3–0.5 A loads, extending motor life and reducing thermal management complexity.	Use Scenario: High-frequency synchronous rectifier or main switch in buck converters powering embedded controllers. IC Role / Device Role / Timing Role: Power switch operating at 500 kHz–1 MHz with fast edge control. Use Value: t_on + t_off < 100 ns and C_iss = 111 pF enable stable switching with minimal gate drive power from 5 V logic.
Load Switch for Peripherals	Actuator Interface in Test Equipment
Use Scenario: Controlled power delivery to USB peripherals, sensors, or display backlights in portable instrumentation. IC Role / Device Role / Timing Role: Single-pole, single-throw electronic switch activated by system controller. Use Value: V_GS(off) ≤ 2.0 V ensures clean turn-off with 0 V logic low; low leakage (I_DSS ≤ 1.0 µA) prevents standby current drain.	Use Scenario: Precision on/off control of solenoids, relays, or piezo elements in automated test fixtures. IC Role / Device Role / Timing Role: Fast-response switching node synchronized to test sequence timing signals. Use Value: Rise/fall times < 20 ns support accurate pulse-width control down to 100 ns resolution in stimulus generation.

Motor Driver Stage

DC/DC Converter Switch

Use Scenario: Driving small brushed DC motors (e.g., cooling fans, positioning actuators) in office equipment and home appliances.

IC Role / Device Role / Timing Role: Low-side switching element controlled by PWM from MCU GPIO pins.

Use Value: R_DS(on) ≤ 1.0 Ω minimizes I²R heating at 0.3–0.5 A loads, extending motor life and reducing thermal management complexity.

Use Scenario: High-frequency synchronous rectifier or main switch in buck converters powering embedded controllers.

IC Role / Device Role / Timing Role: Power switch operating at 500 kHz–1 MHz with fast edge control.

Use Value: t_on + t_off < 100 ns and C_iss = 111 pF enable stable switching with minimal gate drive power from 5 V logic.

Load Switch for Peripherals

Actuator Interface in Test Equipment

Use Scenario: Controlled power delivery to USB peripherals, sensors, or display backlights in portable instrumentation.

IC Role / Device Role / Timing Role: Single-pole, single-throw electronic switch activated by system controller.

Use Value: V_GS(off) ≤ 2.0 V ensures clean turn-off with 0 V logic low; low leakage (I_DSS ≤ 1.0 µA) prevents standby current drain.

Use Scenario: Precision on/off control of solenoids, relays, or piezo elements in automated test fixtures.

IC Role / Device Role / Timing Role: Fast-response switching node synchronized to test sequence timing signals.

Use Value: Rise/fall times < 20 ns support accurate pulse-width control down to 100 ns resolution in stimulus generation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SK2108-T1-AZ	V_DSS = 50 V (vs. 60 V); R_DS(on) = 1.2 Ω max @ 4 V - higher conduction loss and lower voltage margin	Restricted to ≤36 V systems; less suitable for transient-prone 48 V rails	Select only if V_DSS headroom is not required and cost sensitivity outweighs efficiency trade-offs
RSQ025N03TR	V_DSS = 30 V; R_DS(on) = 0.075 Ω @ 4.5 V - lower R_DS(on) but incompatible voltage rating	Not usable in 48 V or 60 V applications; requires redesign of bus architecture	Consider only for new designs targeting ≤24 V operation where ultra-low R_DS(on) justifies full schematic revision

Compared with 2SK2109-T1-AZ, the 2SK2108-T1-AZ offers identical footprint and drive compatibility but sacrifices voltage margin and efficiency, while RSQ025N03TR delivers superior conduction performance at the cost of system-level voltage re-engineering - making 2SK2109-T1-AZ the optimal balance for 48 V logic-driven switching where reliability and drop-in compatibility are prioritized.

Availability

2SK2109-T1-AZ is available at Aetrix Electronics and suitable for motor drivers, DC/DC converters, and peripheral load switches requiring stable component supply across industrial automation, test equipment, and consumer electronics production programs.

Supply support for 2SK2109-T1-AZ 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

Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The 2SK2109-T1-AZ belongs to Renesas' legacy discrete power MOSFET family, engineered specifically for high-speed, low-voltage switching in cost-sensitive, space-constrained applications where 5 V logic compatibility and thermal simplicity are critical.

FAQ

What is the maximum continuous drain current rating for the 2SK2109-T1-AZ?

The 2SK2109-T1-AZ has a rated continuous drain current (I_D(DC)) of ±0.5 A at T_A = 25 °C, derated linearly above that ambient temperature. This rating assumes mounting on a 16 cm² × 0.7 mm ceramic substrate per the datasheet test condition - actual current capability depends on PCB layout, copper area, and airflow. For sustained 0.5 A operation, thermal design must maintain channel temperature below 150 °C.

Is the 2SK2109-T1-AZ compatible with 3.3 V logic-level gate drive?

The 2SK2109-T1-AZ is not guaranteed for full enhancement at 3.3 V gate drive. Its V_GS(off) range is 0.8–2.0 V, and R_DS(on) is specified only at V_GS = 4.0 V and 10 V. At 3.3 V, R_DS(on) increases significantly beyond 1.0 Ω, leading to excessive conduction loss. The 2SK2109-T1-AZ is explicitly designed for 5 V logic interfaces and should be used with 4.0–5.0 V gate drive for reliable performance.

Does the 2SK2109-T1-AZ include built-in ESD protection?

Yes, the 2SK2109-T1-AZ integrates a gate protection diode that clamps |V_GS| to ±20 V, providing inherent ESD robustness per human-body model (HBM) requirements for handling and board-level integration. This on-die Zener structure protects the gate oxide from damage during assembly and field operation - no external gate protection components are required for standard environments.

Can the 2SK2109-T1-AZ be used in avalanche mode?

No, the 2SK2109-T1-AZ is not rated or characterized for repetitive avalanche operation. Its absolute maximum rating for V_DSS is 60 V with V_GS = 0, and the datasheet provides no SOA curves or energy ratings for unclamped inductive switching. Safe operation requires external snubbers or clamping circuits to ensure V_DS never exceeds 60 V under all conditions, including turn-off transients.

What is the marking code for the 2SK2109-T1-AZ package?

The 2SK2109-T1-AZ is marked "NS" on the top surface of its TO-236AB (SC-59) package. This marking is consistent across Renesas' tape-and-reel packaging for this part number and aligns with the pinout diagram in the official datasheet - with Gate (G), Drain (D), and Source (S) arranged left-to-right when viewing the marking side with the tab facing downward.

2SK2109-T1-AZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: TO-243AA

Packaging:: Bulk

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 500mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 4V, 10V

Rds On (Max) @ Id, Vgs:: 800mOhm @ 300mA, 10V

Vgs(th) (Max) @ Id:: 2V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 111 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 2W (Ta)

Operating Temperature:: 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-62

2SK2109-T1-AZ FAQ

1.How can I place an order for 2SK2109-T1-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK2109-T1-AZ 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 2SK2109-T1-AZ reliable?

The price and inventory of 2SK2109-T1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK2109-T1-AZ is usually 5 days.

3.What payment methods are accepted for 2SK2109-T1-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK2109-T1-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK2109-T1-AZ?

2SK2109-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK2109-T1-AZ 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 2SK2109-T1-AZ?

For technical support, including 2SK2109-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK2109-T1-AZ requirements.

6.How does Aetrix verify that 2SK2109-T1-AZ is sourced from the original manufacturer or authorized distributors?

All 2SK2109-T1-AZ 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 2SK2109-T1-AZ meets industry standards.

7.What is the process for return or replacement of 2SK2109-T1-AZ?

All 2SK2109-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK2109-T1-AZ, 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 2SK2109-T1-AZ part is unused and in its original packaging.

Return procedure for 2SK2109-T1-AZ:

1.Submit a request within 90 days.

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

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