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

Renesas 2SK3712(1)-AZ

Name: 2SK3712(1)-AZ
Brand: Renesas
SKU: 2SK3712(1)-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SK3712(1)-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SK3712(1)-AZ.pdf

Description:: SMALL SIGNAL N-CHANNEL MOSFET

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Product details

Overview

2SK3712(1)-AZ from Renesas Electronics is an N-channel power MOSFET designed for high-voltage switching in DC/DC converters, featuring V_DSS = 250 V, R_DS(on) ≤ 0.58 Ω at V_GS = 10 V and I_D = 4.5 A, built-in gate protection diode, and TO-251 (MP-3) package with drain-connected fin for enhanced thermal dissipation.

For engineers reviewing the 2SK3712(1)-AZ datasheet, 2SK3712(1)-AZ pinout, 2SK3712(1)-AZ application, or 2SK3712(1)-AZ equivalent, key selection criteria include avalanche ruggedness (E_AS = 8.1 mJ), low C_iss (450 pF typ.), fast switching (t_d(on)/t_r = 8 ns each), and body diode recovery performance (Q_rr = 630 nC, t_rr = 150 ns).

Technical Context

This device operates as a unidirectional high-side or low-side switch in hard-switched topologies, leveraging its 250 V blocking capability and 9.0 A DC drain current rating. Its gate threshold voltage (V_GS(off) = 2.5–4.5 V) enables compatibility with standard 10 V gate drivers, while the integrated gate protection diode mitigates ESD risk during handling and assembly.

The 2SK3712(1)-AZ exhibits strong avalanche robustness (I_AS = 9 A, E_AS = 8.1 mJ under defined test conditions) and thermally stable R_DS(on) behavior up to 150 °C channel temperature. Its low output capacitance (C_oss = 100 pF) and reverse transfer capacitance (C_rss = 40 pF) support efficient operation in high-frequency switching applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	250 V - supports primary-side switching in offline 200 VAC-derived DC/DC stages without derating.
R_DS(on)	0.58 Ω max - limits conduction loss to ≤23.5 W at 9 A DC, enabling compact heatsink design.
C_iss	450 pF typ. - reduces gate drive power requirement and improves switching speed control.
Q_G	14 nC - determines minimum gate driver peak current needed for <100 ns transition times.
E_AS	8.1 mJ - allows safe single-pulse inductive energy absorption without failure in flyback or LLC resonant circuits.
t_r/t_f	8 ns / 6 ns - enables >1 MHz switching in optimized layouts with minimal overlap loss.
V_F(S-D)	1.5 V max - defines forward drop of intrinsic body diode during synchronous rectification or freewheeling.

Pinout & Package

2SK3712(1)-AZ uses the TO-251 (MP-3) surface-mount package with exposed drain-fin for direct PCB thermal coupling. Pin 1 is Gate, Pin 2 is Drain (connected to metal fin), Pin 3 is Source.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control electrode	Receives gate drive signal; requires external series resistor to damp ringing and limit dV/dt-induced turn-on.
2 (Drain)	Main current path output	Internally connected to metal fin - must be soldered to large copper pour for thermal management and EMI reduction.
3 (Source)	Reference node for gate drive	Serves as return path for load current and gate drive loop; layout must minimize inductance to prevent oscillation.

Key Features

Feature	Design Value
Built-in gate protection diode	ESD immunity per HBM ≥2 kV - eliminates need for discrete gate Zener in basic handling environments.
Low C_rss (40 pF)	Reduces Miller effect, enabling stable switching even with moderate gate resistance and high dV/dt across drain-source.
Avalanche-rated construction	Guaranteed single-pulse ruggedness (I_AS = 9 A, E_AS = 8.1 mJ) - simplifies snubber design in inductive load switching.
High channel temperature rating (150 °C)	Supports operation in sealed enclosures or high ambient environments without forced air cooling.
TO-251 drain-fin thermal path	Thermal resistance R_th(ch-C) = 3.125 °C/W - enables >10 W continuous dissipation with 2 oz copper and 20 cm² pad area.

Applications

DC/DC Converter Primary Switch	Industrial Motor Drive Half-Bridge
Use Scenario: High-efficiency 250 V input isolated flyback converter delivering 24 V/5 A to industrial PLC I/O modules. IC Role / Device Role / Timing Role: Main power switch operating at 100–200 kHz with hard commutation and repetitive avalanche stress. Use Value: Low R_DS(on) minimizes conduction loss; high V_DSS and E_AS ensure reliability during output short-circuit events.	Use Scenario: 48 V bus-powered 3-phase BLDC motor controller for automated warehouse conveyors. IC Role / Device Role / Timing Role: Low-side switch in half-bridge leg, conducting up to 9 A DC with 10 μs dead-time constraints. Use Value: Fast t_f (6 ns) and low Q_GD (7 nC) reduce cross-conduction risk and improve PWM fidelity at 20 kHz.
LED Driver High-Side Switch	Power Factor Correction Boost Stage
Use Scenario: Constant-current LED string driver for outdoor signage powered from 200–240 VAC rectified bus. IC Role / Device Role / Timing Role: High-side switch controlling LED current via PWM dimming at 1–5 kHz. Use Value: Integrated gate protection diode prevents gate oxide damage during hot-plug or transient overvoltage events.	Use Scenario: 300 W active PFC boost converter stage in medical-grade AC/DC power supply. IC Role / Device Role / Timing Role: Main switching element handling 1.2 A RMS input current with 100 kHz switching frequency. Use Value: Low C_iss and C_rss maintain efficiency above 96% while reducing EMI filter size and cost.

DC/DC Converter Primary Switch

Industrial Motor Drive Half-Bridge

Use Scenario: High-efficiency 250 V input isolated flyback converter delivering 24 V/5 A to industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Main power switch operating at 100–200 kHz with hard commutation and repetitive avalanche stress.

Use Value: Low R_DS(on) minimizes conduction loss; high V_DSS and E_AS ensure reliability during output short-circuit events.

Use Scenario: 48 V bus-powered 3-phase BLDC motor controller for automated warehouse conveyors.

IC Role / Device Role / Timing Role: Low-side switch in half-bridge leg, conducting up to 9 A DC with 10 μs dead-time constraints.

Use Value: Fast t_f (6 ns) and low Q_GD (7 nC) reduce cross-conduction risk and improve PWM fidelity at 20 kHz.

LED Driver High-Side Switch

Power Factor Correction Boost Stage

Use Scenario: Constant-current LED string driver for outdoor signage powered from 200–240 VAC rectified bus.

IC Role / Device Role / Timing Role: High-side switch controlling LED current via PWM dimming at 1–5 kHz.

Use Value: Integrated gate protection diode prevents gate oxide damage during hot-plug or transient overvoltage events.

Use Scenario: 300 W active PFC boost converter stage in medical-grade AC/DC power supply.

IC Role / Device Role / Timing Role: Main switching element handling 1.2 A RMS input current with 100 kHz switching frequency.

Use Value: Low C_iss and C_rss maintain efficiency above 96% while reducing EMI filter size and cost.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP20NM50FP	V_DSS = 500 V, R_DS(on) = 0.22 Ω, TO-220FP package	Higher voltage margin but larger footprint and higher gate charge (Q_G = 45 nC)	Preferred where 500 V rating is required and board space permits through-hole mounting.
IXTP12N25P	V_DSS = 250 V, R_DS(on) = 0.32 Ω, TO-220 package, no built-in gate diode	Lower on-resistance but lacks integrated ESD protection and requires external gate clamp	Selected when maximum efficiency is critical and gate drive circuit includes discrete protection.

Compared with STP20NM50FP and IXTP12N25P, the 2SK3712(1)-AZ offers optimal balance of voltage rating, thermal performance in surface-mount form factor, and integrated gate protection-making it especially suitable for space-constrained, high-reliability DC/DC converters where layout simplicity and ESD robustness are prioritized.

Availability

2SK3712(1)-AZ is available at Aetrix Electronics and suitable for industrial motor drives, LED lighting systems, and telecom power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 2SK3712(1)-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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and infrastructure markets.

The 2SK3712(1)-AZ belongs to Renesas' legacy high-voltage power MOSFET product line, engineered for rugged, high-efficiency switching in industrial power conversion where reliability under repetitive stress and thermal stability are critical.

FAQ

What is the maximum continuous drain current rating for the 2SK3712(1)-AZ at 25°C case temperature?

The 2SK3712(1)-AZ has a maximum continuous drain current (I_D(DC)) rating of ±9.0 A at T_C = 25°C. This rating assumes proper PCB thermal design with the TO-251 drain-fin soldered to sufficient copper area. Derating is required above 25°C case temperature per the published derating curve, reaching zero at 125°C case temperature.

Does the 2SK3712(1)-AZ include an integrated body diode, and what are its key parameters?

Yes, the 2SK3712(1)-AZ includes an intrinsic body diode between source and drain. Its forward voltage is specified as V_F(S-D) = 0.9–1.5 V at I_F = 9 A and V_GS = 0 V, with reverse recovery time t_rr = 150 ns and reverse recovery charge Q_rr = 630 nC under di/dt = 100 A/μs. These values are critical for evaluating freewheeling losses in hard-switched topologies.

Can the 2SK3712(1)-AZ be used in avalanche mode, and what are the validated limits?

Yes, the 2SK3712(1)-AZ is rated for single-pulse avalanche operation with I_AS = 9 A and E_AS = 8.1 mJ under defined test conditions (V_DD = 125 V, R_G = 25 Ω, L = 100 μH, starting T_ch = 25°C). Repetitive avalanche is also supported at I_AR = 9 A and E_AR = 8.1 mJ, provided peak channel temperature remains ≤150°C. Operation beyond these limits risks parametric shift or failure.

What is the gate-to-source voltage rating for the 2SK3712(1)-AZ, and why is it important?

The 2SK3712(1)-AZ has a gate-to-source voltage rating (V_GSS) of ±30 V. Exceeding this rating-even briefly-can cause irreversible gate oxide breakdown. This specification mandates use of gate drive circuits that clamp or limit V_GS within this range, especially in high-dV/dt environments or when using bootstrap configurations with insufficient negative voltage suppression.

How does the TO-251 package of the 2SK3712(1)-AZ impact thermal and electrical performance compared to TO-252?

The TO-251 (MP-3) package of the 2SK3712(1)-AZ features a vertical drain-fin structure that provides lower thermal resistance from channel to case (R_th(ch-C) = 3.125 °C/W) than TO-252, improving power dissipation in constrained spaces. Electrically, its shorter internal leads reduce parasitic inductance, enhancing switching consistency and reducing voltage overshoot during turn-off-critical for high-speed, high-voltage operation.

2SK3712(1)-AZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

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

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

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

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: -

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

2SK3712(1)-AZ FAQ

1.How can I place an order for 2SK3712(1)-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK3712(1)-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 2SK3712(1)-AZ reliable?

The price and inventory of 2SK3712(1)-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK3712(1)-AZ is usually 5 days.

3.What payment methods are accepted for 2SK3712(1)-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK3712(1)-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK3712(1)-AZ?

2SK3712(1)-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK3712(1)-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 2SK3712(1)-AZ?

For technical support, including 2SK3712(1)-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK3712(1)-AZ requirements.

6.How does Aetrix verify that 2SK3712(1)-AZ is sourced from the original manufacturer or authorized distributors?

All 2SK3712(1)-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 2SK3712(1)-AZ meets industry standards.

7.What is the process for return or replacement of 2SK3712(1)-AZ?

All 2SK3712(1)-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK3712(1)-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 2SK3712(1)-AZ part is unused and in its original packaging.

Return procedure for 2SK3712(1)-AZ:

1.Submit a request within 90 days.

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

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