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

Renesas 2SK3635-Z-AZ

Name: 2SK3635-Z-AZ
Brand: Renesas
SKU: 2SK3635-Z-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SK3635-Z-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SK3635-Z-AZ.pdf

Description:: SMALL SIGNAL N-CHANNEL MOSFET

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Product details

Overview

2SK3635-Z-AZ from Renesas Electronics is an N-channel power MOSFET designed for high-voltage switching applications, featuring V_DSS = 200 V, R_DS(on) = 0.43 Ω max at V_GS = 10 V / I_D = 4.0 A, and built-in gate protection diode. It delivers robust avalanche capability (E_AS = 6.4 mJ) and low input capacitance (C_iss = 390 pF typ), making it suitable for DC/DC converters in industrial power supplies.

For engineers reviewing the 2SK3635-Z-AZ datasheet, 2SK3635-Z-AZ pinout, 2SK3635-Z-AZ application, or 2SK3635-Z-AZ equivalent, key selection criteria include its TO-252 (MP-3Z) package, ±30 V gate rating, 8 A DC drain current, avalanche-rated operation, and body diode recovery performance (t_rr = 110 ns, Q_rr = 360 nC).

Technical Context

This device operates as a unidirectional high-side or low-side switch in hard-switched topologies. Its gate threshold voltage range (V_GS(off) = 2.5–4.5 V) ensures reliable turn-on with standard 10 V gate drive, while its low C_iss/C_oss ratio supports efficient high-frequency switching up to several hundred kHz.

The integrated gate protection diode guards against ESD but does not replace external transient suppression; the body diode exhibits VF(S-D) = 1.0 V at I_F = 8 A and t_rr = 110 ns under specified di/dt conditions, enabling synchronous rectification or freewheeling in flyback and buck-derived converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	200 V - Supports primary-side switching in 100–170 VAC offline SMPS and 48 V–110 VDC industrial bus systems.
R_DS(on) max	0.43 Ω @ V_GS = 10 V, I_D = 4.0 A - Enables ≤1.7 W conduction loss at 4 A, suitable for <15 W continuous output stages.
I_D(DC)	±8.0 A @ T_C = 25°C - Requires heatsinking above ~2 A in ambient air; derates to zero at T_C = 175°C.
C_iss	390 pF typ @ V_DS = 10 V - Reduces gate drive power and enables clean 10–20 ns switching transitions with low-R_G.
E_AS	6.4 mJ single-pulse - Allows safe operation under inductive turn-off stress in relay drivers or motor gate control without snubbers.
t_rr	110 ns @ I_F = 8 A, di/dt = 100 A/μs - Limits reverse recovery loss in discontinuous-mode converters; requires careful layout to avoid ringing.
Q_G	12 nC @ V_DD = 160 V - Matches standard 1-A peak gate drivers; Q_GD/Q_GS ratio of 3:1 supports stable Miller plateau control.

Pinout & Package

2SK3635-Z-AZ is housed in a TO-252 (MP-3Z) surface-mount package with exposed drain pad for thermal conduction. The three terminals are arranged in a single-row configuration compatible with standard PCB footprints for medium-power discrete FETs.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control electrode	Receives voltage-controlled signal; rated ±30 V; internal ESD diode to Source protects against handling transients.
2 (Drain)	High-side current path	Connected to main power rail; electrically tied to exposed metal tab (fin) for thermal and electrical conduction to heatsink or copper pour.
3 (Source)	Reference node	Serves as return path for load current and gate drive reference; body diode anode is internally connected here.

Key Features

Feature	Design Value
Avalanche-rated operation	Single-pulse E_AS = 6.4 mJ and I_AS = 8 A enable reliable inductive switching without external clamping in cost-sensitive designs.
Low gate charge	Q_G = 12 nC minimizes driver losses and simplifies gate drive design for PWM frequencies up to 500 kHz.
Integrated gate protection diode	ESD protection between Gate and Source meets HBM >2 kV, reducing need for external TVS in board-level ESD zones.
Optimized body diode	VF(S-D) = 1.0 V and t_rr = 110 ns support efficient freewheeling in non-synchronous buck or flyback converters.
Thermally enhanced TO-252	Exposed Drain tab provides R_th(j-c) = 5.21°C/W, enabling 15–20 W dissipation with minimal heatsink area.

Applications

Industrial DC/DC Converters	AC-DC Adapter Primary Switch
Use Scenario: 24 V–48 V input isolated forward or flyback converter delivering 5–12 V at ≤10 W. IC Role / Device Role / Timing Role: Main switching transistor controlling energy transfer during ON-time; operates at 65–130 kHz with hard switching. Use Value: Low R_DS(on) reduces conduction loss below 1.5 W at full load; avalanche rating absorbs leakage inductance spikes without snubber.	Use Scenario: Universal-input (85–264 VAC) offline adapter powering consumer electronics. IC Role / Device Role / Timing Role: Primary-side power switch in discontinuous conduction mode (DCM) flyback topology. Use Value: 200 V V_DSS margin accommodates reflected output voltage + leakage spike; fast t_rr limits diode recovery loss during ZVS transitions.
Motor Control Interface	Relay/Solenoid Driver
Use Scenario: Low-voltage brushed DC motor driver (≤36 V) in factory automation actuators. IC Role / Device Role / Timing Role: Low-side switch enabling PWM speed control; handles back-EMF during commutation. Use Value: Built-in avalanche capability safely clamps inductive kickback up to 8 A/6.4 mJ; TO-252 footprint allows compact dual-FET half-bridge layout.	Use Scenario: Solid-state replacement for electromechanical relays in HVAC control panels. IC Role / Device Role / Timing Role: High-side or low-side switch driving 12–24 V DC coils with 100–500 mA hold current. Use Value: Gate threshold ensures clean turn-on with microcontroller GPIO; low C_iss prevents false triggering from EMI coupling.

Industrial DC/DC Converters

AC-DC Adapter Primary Switch

Use Scenario: 24 V–48 V input isolated forward or flyback converter delivering 5–12 V at ≤10 W.

IC Role / Device Role / Timing Role: Main switching transistor controlling energy transfer during ON-time; operates at 65–130 kHz with hard switching.

Use Value: Low R_DS(on) reduces conduction loss below 1.5 W at full load; avalanche rating absorbs leakage inductance spikes without snubber.

Use Scenario: Universal-input (85–264 VAC) offline adapter powering consumer electronics.

IC Role / Device Role / Timing Role: Primary-side power switch in discontinuous conduction mode (DCM) flyback topology.

Use Value: 200 V V_DSS margin accommodates reflected output voltage + leakage spike; fast t_rr limits diode recovery loss during ZVS transitions.

Motor Control Interface

Relay/Solenoid Driver

Use Scenario: Low-voltage brushed DC motor driver (≤36 V) in factory automation actuators.

IC Role / Device Role / Timing Role: Low-side switch enabling PWM speed control; handles back-EMF during commutation.

Use Value: Built-in avalanche capability safely clamps inductive kickback up to 8 A/6.4 mJ; TO-252 footprint allows compact dual-FET half-bridge layout.

Use Scenario: Solid-state replacement for electromechanical relays in HVAC control panels.

IC Role / Device Role / Timing Role: High-side or low-side switch driving 12–24 V DC coils with 100–500 mA hold current.

Use Value: Gate threshold ensures clean turn-on with microcontroller GPIO; low C_iss prevents false triggering from EMI coupling.

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
STP20NM20	V_DSS = 200 V, R_DS(on) = 0.22 Ω max, TO-220 package, no integrated gate protection diode	Higher current capability (20 A) but larger footprint and no on-chip ESD protection	Preferred where higher I_D and lower R_DS(on) justify through-hole assembly and external gate protection.
IRF640NPbF	V_DSS = 200 V, R_DS(on) = 0.18 Ω max, TO-220, no avalanche rating, C_iss = 660 pF	Larger input capacitance increases gate drive loss; lacks specified E_AS or t_rr data	Suitable for linear-mode or low-frequency switching where avalanche immunity and fast recovery are not required.

Compared with STP20NM20 and IRF640NPbF, the 2SK3635-Z-AZ trades slightly higher R_DS(on) for surface-mount compatibility, integrated gate protection, and guaranteed avalanche performance-making it optimal for space-constrained, medium-power industrial converters requiring robustness without added protection components.

Availability

2SK3635-Z-AZ is available at Aetrix Electronics and suitable for industrial DC/DC converters, AC-DC adapters, motor interface circuits, and relay/solenoid drivers requiring stable component supply and long-term production continuity.

Supply support for 2SK3635-Z-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 timing solutions for industrial, automotive, and infrastructure markets.

The 2SK3635-Z-AZ belongs to Renesas' legacy power MOSFET product line, engineered for high-voltage, medium-current switching in cost-sensitive industrial power conversion and control applications.

FAQ

What is the maximum continuous drain current rating for the 2SK3635-Z-AZ?

The 2SK3635-Z-AZ has a DC drain current rating of ±8.0 A at case temperature T_C = 25°C. This value decreases with rising case temperature per the derating curve in the datasheet; at T_C = 100°C, the usable I_D(DC) drops to approximately 4.5 A. For sustained operation, thermal design must maintain T_C within limits using the TO-252's exposed drain pad and adequate copper area.

Does the 2SK3635-Z-AZ have a built-in body diode, and what are its characteristics?

Yes, the 2SK3635-Z-AZ integrates a source-to-drain body diode with VF(S-D) = 1.0 V at I_F = 8 A and V_GS = 0 V, and reverse recovery time t_rr = 110 ns under di/dt = 100 A/μs. These parameters are measured and specified in the official Renesas datasheet D15932EJ3V0DS, confirming suitability for freewheeling in flyback and buck converters where controlled recovery is needed.

Is the 2SK3635-Z-AZ pin-compatible with other TO-252 N-channel MOSFETs?

The 2SK3635-Z-AZ uses the standard TO-252 (MP-3Z) footprint with Gate–Drain–Source pin order (1–2–3), matching industry-standard layouts. However, pin compatibility alone does not guarantee functional equivalence-designers must verify V_DSS, R_DS(on), Q_G, and avalanche ratings. The 2SK3635-Z-AZ's specific gate threshold and body diode behavior require validation in the target circuit.

What is the gate-to-source voltage rating for the 2SK3635-Z-AZ, and why is it important?

The 2SK3635-Z-AZ specifies a gate-to-source voltage rating of ±30 V. Exceeding this limit risks permanent gate oxide damage. This rating defines the absolute maximum swing allowed during drive-especially critical during fast switching or when gate ringing occurs. The device's built-in gate protection diode helps clamp transient overvoltage but does not eliminate the need for proper gate drive design and layout.

How does the avalanche capability of the 2SK3635-Z-AZ benefit real-world circuit design?

The 2SK3635-Z-AZ is fully characterized for single-pulse avalanche with I_AS = 8 A and E_AS = 6.4 mJ under defined test conditions (V_DD = 100 V, L = 100 μH). This specification allows designers to eliminate or simplify external RCD snubbers in inductive switching applications like relay drivers or flyback transformers-reducing BOM count, board space, and failure points while maintaining reliability under worst-case turn-off stress.

2SK3635-Z-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:: -

2SK3635-Z-AZ FAQ

1.How can I place an order for 2SK3635-Z-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK3635-Z-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 2SK3635-Z-AZ reliable?

The price and inventory of 2SK3635-Z-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK3635-Z-AZ is usually 5 days.

3.What payment methods are accepted for 2SK3635-Z-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK3635-Z-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK3635-Z-AZ?

2SK3635-Z-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK3635-Z-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 2SK3635-Z-AZ?

For technical support, including 2SK3635-Z-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK3635-Z-AZ requirements.

6.How does Aetrix verify that 2SK3635-Z-AZ is sourced from the original manufacturer or authorized distributors?

All 2SK3635-Z-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 2SK3635-Z-AZ meets industry standards.

7.What is the process for return or replacement of 2SK3635-Z-AZ?

All 2SK3635-Z-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK3635-Z-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 2SK3635-Z-AZ part is unused and in its original packaging.

Return procedure for 2SK3635-Z-AZ:

1.Submit a request within 90 days.

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

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