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

Renesas 2SK2371-A

Name: 2SK2371-A
Brand: Renesas
SKU: 2SK2371-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SK2371-A

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SK2371-A.pdf

Description:: N-CHANNEL POWER MOSFET

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Product details

Overview

2SK2371-A from Renesas Electronics is an N-channel power MOSFET designed for high-voltage switching applications, featuring R_DS(on) = 0.25 Ω max at V_GS = 10 V and I_D = 13 A, V_DSS = 450 V, and single avalanche energy E_AS = 446 mJ - used in industrial motor drives and DC-DC converters requiring robust overvoltage protection.

For engineers reviewing the 2SK2371-A datasheet, 2SK2371-A pinout, 2SK2371-A application, or 2SK2371-A equivalent, key selection criteria include its TO-3P package thermal performance (R_th(ch-c) = 0.78 °C/W), gate charge Q_G = 95 nC, and avalanche-rated operation under inductive switching stress.

Technical Context

This device employs a planar vertical DMOS structure optimized for high-voltage blocking and low conduction loss. Its gate threshold voltage V_GS(off) = 2.5–3.5 V ensures reliable turn-on with standard 10 V logic-level drive, while C_iss = 3600 pF and Q_GD = 40 nC support controlled switching in hard-switched topologies.

The integrated body diode exhibits V_F(S-D) = 1.0 V at I_F = 25 A and t_rr = 500 ns, enabling use in freewheeling paths without external diodes in flyback or buck-derived converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	450 V - supports primary-side switching in offline SMPS up to 380 V DC bus with margin.
R_DS(on) max	0.25 Ω at V_GS = 10 V, I_D = 13 A - enables <1.5 W conduction loss at 10 A continuous current.
E_AS	446 mJ - withstands single-pulse inductive energy spikes without failure in relay/motor control.
Q_G	95 nC - determines gate driver current requirement (~1–2 A peak for 100 ns turn-on).
t_r/t_f	70 ns / 60 ns - defines minimum practical switching frequency before excessive switching loss dominates.
T_ch max	150 °C - sets maximum junction temperature limit for thermal design of heatsink interface.
C_iss	3600 pF - impacts gate drive loop stability and Miller effect during high-dV/dt transitions.

Pinout & Package

2SK2371-A is housed in a TO-3P (MP-88) package with isolated metal tab (Drain-connected fin), offering low thermal resistance (R_th(ch-c) = 0.78 °C/W) and mechanical robustness for high-power mounting.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control terminal	Receives voltage-controlled signal to modulate channel conductivity; requires low-impedance drive due to Q_G = 95 nC.
2 (Drain)	High-side power output	Connected to high-voltage rail (up to 450 V); electrically tied to metal tab for thermal path and high-current return.
3 (Source)	Power reference node	Serves as return path for load current and gate drive reference; common connection point for sense resistor or shunt.
4 (Fin/Drain)	Thermal & electrical Drain extension	Exposed metal surface bolted to heatsink; must be electrically isolated from PCB ground unless system design permits Drain-referenced cooling.

Key Features

Feature	Design Value
Low R_DS(on)	0.25 Ω max enables high-efficiency power conversion in 10–25 A industrial loads without forced air cooling.
High avalanche capability	Rated for 446 mJ single-pulse energy - eliminates need for external snubbers in inductive switching circuits.
Integrated body diode	V_F(S-D) = 1.0 V and t_rr = 500 ns allow safe freewheeling in non-synchronous topologies like buck or flyback.
TO-3P thermal performance	R_th(ch-c) = 0.78 °C/W supports >100 W dissipation with modest heatsinking - critical for space-constrained motor drives.

Applications

Industrial Motor Drives	Offline AC-DC Power Supplies
Use Scenario: Driving 3-phase inverter half-bridges in HVAC blowers and pump controllers operating from 230 V AC mains. IC Role / Device Role / Timing Role: High-side switching element handling 15 A peak load current with repetitive 450 V blocking duty. Use Value: Avalanche rating prevents destructive failure during motor stall or short-circuit transients without added clamping components.	Use Scenario: Primary-side switch in 150–300 W universal-input flyback converters for industrial instrumentation. IC Role / Device Role / Timing Role: Main power switch turning on/off at 65–100 kHz with 450 V V_DSS margin over 375 V DC link. Use Value: Low Q_G and fast t_r/t_f reduce switching losses while maintaining EMI compliance in compact enclosures.
DC-DC Converters for Telecom	Uninterruptible Power Systems (UPS)
Use Scenario: Step-down switching in 48 V input telecom rectifiers delivering 12 V/20 A to server backplanes. IC Role / Device Role / Timing Role: Synchronous rectifier or primary FET in phase-shifted full-bridge topology with ZVS capability. Use Value: Low C_iss and C_oss minimize capacitive losses during zero-voltage switching transitions.	Use Scenario: Battery charging and inverter stage in line-interactive UPS handling 1 kVA loads. IC Role / Device Role / Timing Role: Bidirectional power switch managing battery-to-AC inversion and grid-to-battery charging paths. Use Value: Robust body diode and avalanche tolerance ensure reliability during grid fault recovery and battery reversal events.

Industrial Motor Drives

Offline AC-DC Power Supplies

Use Scenario: Driving 3-phase inverter half-bridges in HVAC blowers and pump controllers operating from 230 V AC mains.

IC Role / Device Role / Timing Role: High-side switching element handling 15 A peak load current with repetitive 450 V blocking duty.

Use Value: Avalanche rating prevents destructive failure during motor stall or short-circuit transients without added clamping components.

Use Scenario: Primary-side switch in 150–300 W universal-input flyback converters for industrial instrumentation.

IC Role / Device Role / Timing Role: Main power switch turning on/off at 65–100 kHz with 450 V V_DSS margin over 375 V DC link.

Use Value: Low Q_G and fast t_r/t_f reduce switching losses while maintaining EMI compliance in compact enclosures.

DC-DC Converters for Telecom

Uninterruptible Power Systems (UPS)

Use Scenario: Step-down switching in 48 V input telecom rectifiers delivering 12 V/20 A to server backplanes.

IC Role / Device Role / Timing Role: Synchronous rectifier or primary FET in phase-shifted full-bridge topology with ZVS capability.

Use Value: Low C_iss and C_oss minimize capacitive losses during zero-voltage switching transitions.

Use Scenario: Battery charging and inverter stage in line-interactive UPS handling 1 kVA loads.

IC Role / Device Role / Timing Role: Bidirectional power switch managing battery-to-AC inversion and grid-to-battery charging paths.

Use Value: Robust body diode and avalanche tolerance ensure reliability during grid fault recovery and battery reversal events.

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
STP16NF50	V_DSS = 500 V, R_DS(on) = 0.32 Ω, TO-220 package, no fin tab	Lacks metal fin for direct heatsink mounting; higher R_DS(on) increases conduction loss at 13 A	Acceptable where board-level heatsinking suffices and 50 V extra V_DSS margin is needed
IXTH16N50L	V_DSS = 500 V, R_DS(on) = 0.27 Ω, TO-247 package, enhanced avalanche rating (E_AS = 520 mJ)	Higher cost and larger footprint; superior avalanche margin but same thermal interface constraints	Preferred for mission-critical 500 V systems where 446 mJ is insufficient

Compared with STP16NF50 and IXTH16N50L, the 2SK2371-A offers lower R_DS(on) and integrated fin-based thermal path in TO-3P - making it optimal for space-constrained, high-reliability industrial switching where 450 V rating is sufficient and heatsink integration is mandatory.

Availability

2SK2371-A is available at Aetrix Electronics and suitable for industrial motor drives, offline AC-DC power supplies, and DC-DC converters requiring stable component supply across multi-year production cycles.

Supply support for 2SK2371-A 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 industrial, automotive, and infrastructure markets.

The 2SK2371-A belongs to Renesas' legacy high-voltage power MOSFET product line, engineered specifically for ruggedized industrial switching applications demanding high avalanche immunity and direct-mount thermal performance.

FAQ

What is the maximum continuous drain current rating for the 2SK2371-A?

The 2SK2371-A has a DC drain current rating of ±25 A at T_c = 25°C. However, practical continuous current depends on heatsinking: with R_th(ch-c) = 0.78 °C/W and T_ch ≤ 150°C, sustained operation above 10–12 A requires active cooling. The 2SK2371-A datasheet specifies derating curves showing usable I_D(DC) drops to ~6 A at T_c = 100°C.

Does the 2SK2371-A have a built-in body diode, and what are its characteristics?

Yes, the 2SK2371-A integrates a source-drain body diode with forward voltage V_F(S-D) = 1.0 V at I_F = 25 A and reverse recovery time t_rr = 500 ns. This allows use in freewheeling and synchronous rectification roles without external diodes. The 2SK2371-A body diode is rated for continuous 25 A forward current and supports moderate-frequency recovery in flyback and buck converters.

What is the gate threshold voltage range for the 2SK2371-A, and how does it affect drive requirements?

The 2SK2371-A has a gate-to-source cutoff voltage V_GS(off) of 2.5–3.5 V at I_D = 1 mA. This means full enhancement occurs reliably above 4.5 V, and logic-level 5 V or 10 V gate drivers are compatible. The 2SK2371-A's typical |y_fs| = 13 S ensures strong transconductance for stable gain in linear-mode applications, but its 95 nC total gate charge demands ≥1 A peak drive current for sub-100 ns switching.

Can the 2SK2371-A be used in avalanche mode, and what are the test conditions?

Yes, the 2SK2371-A is fully rated for single-pulse avalanche operation with I_AS = 25 A and E_AS = 446 mJ. Testing uses V_GS = 20 V → 0 V, R_G = 25 Ω, starting T_ch = 25°C, and inductive load. The 2SK2371-A's avalanche capability is validated per JEDEC JESD24-1 and supports unclamped inductive switching in motor drives and solenoid controls without external protection.

What is the thermal resistance from channel to case (R_th(ch-c)) for the 2SK2371-A, and how does it impact heatsink design?

The 2SK2371-A has R_th(ch-c) = 0.78 °C/W, measured from silicon channel to the metal fin (Pin 4). This low value enables >100 W power dissipation with modest heatsinking - e.g., a 1.5 °C/W heatsink yields T_ch ≈ 135°C at 160 W P_T1. Because the 2SK2371-A's fin is electrically connected to Drain, isolation hardware (mica washer, silicone pad) must be used when mounting to grounded heatsinks.

2SK2371-A 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:: -

2SK2371-A FAQ

1.How can I place an order for 2SK2371-A through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK2371-A 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 2SK2371-A reliable?

The price and inventory of 2SK2371-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK2371-A is usually 5 days.

3.What payment methods are accepted for 2SK2371-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK2371-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK2371-A?

2SK2371-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK2371-A 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 2SK2371-A?

For technical support, including 2SK2371-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK2371-A requirements.

6.How does Aetrix verify that 2SK2371-A is sourced from the original manufacturer or authorized distributors?

All 2SK2371-A 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 2SK2371-A meets industry standards.

7.What is the process for return or replacement of 2SK2371-A?

All 2SK2371-A units undergo pre-shipment inspection (PSI). If there is an issue with 2SK2371-A, 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 2SK2371-A part is unused and in its original packaging.

Return procedure for 2SK2371-A:

1.Submit a request within 90 days.

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

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