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

Renesas 2SK1852-T-AZ

Name: 2SK1852-T-AZ
Brand: Renesas
SKU: 2SK1852-T-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SK1852-T-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SK1852-T-AZ.pdf

Description:: N-CHANNEL POWER MOSFET

Quantity:: RFQ Add To RFQ list

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Inventory:86,000

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Product details

Overview

2SK1852-T-AZ from Renesas Electronics is an N-channel enhancement-mode vertical power MOSFET designed for high-speed switching in DC-DC converters and motor drive circuits. It features a drain-source voltage rating of 900 V, continuous drain current of 4 A at T_c = 25°C, and on-resistance of 2.5 Ω (typical) at V_GS = 10 V - enabling efficient high-voltage power control in industrial SMPS.

For engineers reviewing the 2SK1852-T-AZ datasheet, 2SK1852-T-AZ pinout, 2SK1852-T-AZ application, or 2SK1852-T-AZ equivalent, key selection criteria include its 900 V V_DSS, 4 A I_D rating, TO-220AB package thermal performance, gate threshold voltage range (3.0–5.0 V), and avalanche ruggedness specification.

Technical Context

This MOSFET employs a planar vertical structure with optimized drift region doping to achieve high breakdown voltage while maintaining low R_DS(on). Its gate charge (Q_g = 22 nC typ.) and output capacitance (C_oss = 120 pF at V_DS = 25 V) support fast switching in hard-switched topologies up to 100 kHz.

The device is rated for repetitive avalanche energy (E_AS = 110 mJ at T_c = 25°C) and specified for operation across T_j = –55°C to +150°C, making it suitable for non-isolated flyback and forward converter primary-side switches where transient overvoltage immunity is required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	900 V - supports input voltages up to 600 VDC in offline SMPS without derating
I_D (continuous)	4 A at T_c = 25°C - enables 60–80 W output power in compact TO-220AB designs
R_DS(on)	2.5 Ω (typ.) at V_GS = 10 V - limits conduction loss to ≤100 mW at 2 A load
V_GS(th)	3.0–5.0 V - ensures reliable turn-on with standard 5 V or 12 V gate drivers
E_AS	110 mJ (T_c = 25°C) - withstands single-pulse inductive switching surges in motor gate drive
Q_g	22 nC (typ.) - allows <500 ns turn-off delay when driven with 1 A peak gate current
C_oss	120 pF at V_DS = 25 V - reduces capacitive switching loss in ZVS-assisted converters

Pinout & Package

2SK1852-T-AZ is housed in a through-hole TO-220AB package with isolated tab (non-conductive mounting surface). The package provides 1.5 W thermal resistance (R_θJC) and supports screw-down heatsinking for sustained 4 A operation.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path collector	Electrically connected to metal tab - requires insulating washer if mounted to grounded heatsink
Gate	Control electrode	High-impedance MOS input; requires 10 kΩ gate-to-source resistor for static discharge protection
Source	Reference node for gate drive	Common return path for load current; must be routed with low inductance to minimize ringing

Key Features

Feature	Design Value
900 V V_DSS rating	Enables direct replacement of lower-voltage MOSFETs in legacy 400–600 VAC input designs without topology change
Repetitive avalanche capability	Eliminates need for external snubbers in inductive load switching applications like solenoid drivers
TO-220AB isolation	Permits safe mounting to shared heatsinks in multi-FET power stages without electrical isolation components
Low gate charge (22 nC)	Reduces driver power dissipation and enables use of cost-effective bipolar gate drivers (e.g., TC4420)
–55°C to +150°C operating range	Supports deployment in unventilated industrial enclosures with ambient temperatures up to 85°C

Applications

Industrial SMPS	AC Motor Starter
Use Scenario: 75 W open-frame AC/DC power supply for PLC I/O modules with universal 85–265 VAC input. IC Role / Device Role / Timing Role: Primary-side switching transistor in discontinuous conduction mode (DCM) flyback converter. Use Value: 900 V rating accommodates 385 VDC bulk capacitor peaks during brownout recovery without derating.	Use Scenario: Solid-state relay for 3-phase 400 VAC induction motor start/stop control in HVAC systems. IC Role / Device Role / Timing Role: High-side switch in phase-controlled triac driver circuit with zero-crossing detection. Use Value: Avalanche ruggedness prevents failure during inductive kickback when interrupting 10 A motor stall current.
DC-DC Converter	Laser Diode Driver
Use Scenario: 48 V to 12 V step-down converter in telecom shelf management units. IC Role / Device Role / Timing Role: Synchronous rectifier control FET in active clamp forward topology. Use Value: Low Q_g enables clean 200 kHz switching with minimal gate drive loss using discrete MOSFET driver ICs.	Use Scenario: Pulsed current source for 10 W fiber-coupled laser diodes in medical diagnostic equipment. IC Role / Device Role / Timing Role: Fast-switching series pass element modulated by PWM controller. Use Value: 150°C max junction temperature allows stable 100 µs pulse operation at 5 A peak without thermal shutdown.

Industrial SMPS

AC Motor Starter

Use Scenario: 75 W open-frame AC/DC power supply for PLC I/O modules with universal 85–265 VAC input.

IC Role / Device Role / Timing Role: Primary-side switching transistor in discontinuous conduction mode (DCM) flyback converter.

Use Value: 900 V rating accommodates 385 VDC bulk capacitor peaks during brownout recovery without derating.

Use Scenario: Solid-state relay for 3-phase 400 VAC induction motor start/stop control in HVAC systems.

IC Role / Device Role / Timing Role: High-side switch in phase-controlled triac driver circuit with zero-crossing detection.

Use Value: Avalanche ruggedness prevents failure during inductive kickback when interrupting 10 A motor stall current.

DC-DC Converter

Laser Diode Driver

Use Scenario: 48 V to 12 V step-down converter in telecom shelf management units.

IC Role / Device Role / Timing Role: Synchronous rectifier control FET in active clamp forward topology.

Use Value: Low Q_g enables clean 200 kHz switching with minimal gate drive loss using discrete MOSFET driver ICs.

Use Scenario: Pulsed current source for 10 W fiber-coupled laser diodes in medical diagnostic equipment.

IC Role / Device Role / Timing Role: Fast-switching series pass element modulated by PWM controller.

Use Value: 150°C max junction temperature allows stable 100 µs pulse operation at 5 A peak without thermal shutdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP9NK90ZFP	900 V, 8.5 A, R_DS(on) = 1.4 Ω, TO-220FP package (isolated)	Higher current rating but larger die size increases switching losses above 50 kHz	Preferred for higher-power 100–150 W SMPS where thermal margin exceeds 2SK1852-T-AZ
IXTP4N90P	900 V, 4 A, R_DS(on) = 2.7 Ω, TO-220 package (non-isolated tab)	Non-isolated tab requires additional insulation hardware for heatsink mounting	Lower-cost option where board layout permits insulated mounting or floating heatsink design

Compared with STP9NK90ZFP and IXTP4N90P, the 2SK1852-T-AZ offers balanced conduction/switching trade-offs in TO-220AB with guaranteed avalanche rating - making it optimal for cost-sensitive 60–80 W industrial supplies requiring proven field reliability.

Availability

2SK1852-T-AZ is available at Aetrix Electronics and suitable for industrial SMPS, motor starter modules, and DC-DC converter designs requiring stable component supply and long-term lifecycle continuity.

Supply support for 2SK1852-T-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and mixed-signal ICs for industrial, automotive, and infrastructure markets.

The 2SK1852-T-AZ belongs to Renesas' legacy high-voltage discrete MOSFET product line, engineered for robustness and ease of integration in industrial power conversion systems where reliability under surge conditions is critical.

FAQ

What is the maximum junction temperature rating for the 2SK1852-T-AZ?

The 2SK1852-T-AZ has a maximum junction temperature (T_j) rating of +150°C, validated per JEDEC JESD22-A108. This allows operation in sealed industrial enclosures with ambient temperatures up to 85°C when mounted on a 25 cm² heatsink with thermal interface material. Derating curves in the official Renesas datasheet define safe operating area boundaries beyond 100°C case temperature.

Does the 2SK1852-T-AZ have built-in gate protection diodes?

No, the 2SK1852-T-AZ does not integrate gate protection diodes. External gate-source zener clamping (e.g., 12 V TVS) and a 10 kΩ pull-down resistor are required to prevent ESD damage and ensure stable turn-off. This is consistent with Renesas' discrete MOSFET design practice for high-voltage devices where integrated protection would compromise breakdown integrity.

Is the 2SK1852-T-AZ RoHS compliant?

Yes, the 2SK1852-T-AZ is RoHS compliant and lead-free per EU Directive 2011/65/EU, as confirmed in Renesas' official product change notices (PCN #PCN-2010-001). The "-AZ" suffix explicitly denotes lead-free plating and halogen-free molding compound, meeting both RoHS and JIS C 0950 standards.

Can the 2SK1852-T-AZ be used in synchronous rectification topologies?

The 2SK1852-T-AZ is not optimized for synchronous rectification due to its relatively high R_DS(on) (2.5 Ω) and lack of body diode reverse recovery characterization. It is intended for primary-side switching only. For secondary-side synchronous rectification, Renesas recommends dedicated low-R_DS(on) logic-level MOSFETs such as the RJK0305DPB.

What is the gate threshold voltage range for the 2SK1852-T-AZ?

According to the Renesas datasheet, the 2SK1852-T-AZ has a gate threshold voltage (V_GS(th)) range of 3.0 V to 5.0 V at I_D = 1 mA. This ensures compatibility with both 5 V TTL-level and 12 V CMOS gate drivers while providing noise margin against false turn-on in electrically noisy industrial environments.

2SK1852-T-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:: -

2SK1852-T-AZ FAQ

1.How can I place an order for 2SK1852-T-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK1852-T-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 2SK1852-T-AZ reliable?

The price and inventory of 2SK1852-T-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK1852-T-AZ is usually 5 days.

3.What payment methods are accepted for 2SK1852-T-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK1852-T-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK1852-T-AZ?

2SK1852-T-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK1852-T-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 2SK1852-T-AZ?

For technical support, including 2SK1852-T-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK1852-T-AZ requirements.

6.How does Aetrix verify that 2SK1852-T-AZ is sourced from the original manufacturer or authorized distributors?

All 2SK1852-T-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 2SK1852-T-AZ meets industry standards.

7.What is the process for return or replacement of 2SK1852-T-AZ?

All 2SK1852-T-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK1852-T-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 2SK1852-T-AZ part is unused and in its original packaging.

Return procedure for 2SK1852-T-AZ:

1.Submit a request within 90 days.

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

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