Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Renesas 2SK1288-AZ

Name: 2SK1288-AZ
Brand: Renesas
SKU: 2SK1288-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 2SK1288-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SK1288-AZ.pdf

Description:: N-CHANNEL POWER MOSFET

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:106,567

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

2SK1288-AZ from Renesas Electronics is an N-channel silicon power MOSFET designed for high-speed switching in DC-DC converters and motor drive circuits. It features a 500 V drain-source breakdown voltage, 4 A continuous drain current (T_C = 25°C), and 2.5 Ω typical drain-source on-resistance at V_GS = 10 V. It is commonly used in flyback and forward converter primary-side switches.

For engineers reviewing the 2SK1288-AZ datasheet, 2SK1288-AZ pinout, 2SK1288-AZ application, or 2SK1288-AZ equivalent, key selection criteria include its 500 V rating, 4 A I_D, 2.5 Ω R_DS(on), TO-220AB package thermal performance, and suitability for isolated AC/DC power supplies operating up to 100 kHz.

Technical Context

The 2SK1288-AZ employs a planar vertical DMOS structure optimized for ruggedness and fast turn-on/turn-off characteristics. Its gate threshold voltage is specified at 2.0–4.0 V, and it supports gate drive with standard +10 V logic-level signals without requiring level-shifting circuitry.

It exhibits 150 nC total gate charge and 45 ns typical turn-off delay time, enabling efficient operation in hard-switched topologies. The device is rated for junction temperatures up to 150°C and meets JEDEC JESD22-A108 reliability standards for temperature cycling and humidity testing.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	500 V - Withstands up to 500 V drain-to-source voltage, suitable for 380 V DC bus applications with safety margin.
I_D (continuous)	4 A at T_C = 25°C - Supports medium-power SMPS designs with heatsink-assisted thermal management.
R_DS(on)	2.5 Ω (typ) at V_GS = 10 V - Enables low conduction loss in 20–50 W offline converters.
Q_g	150 nC - Determines gate driver current requirement; compatible with common 1–2 A peak gate drivers.
t_off	45 ns (typ) - Allows stable operation up to ~100 kHz switching frequency without excessive switching loss.
T_J max	150°C - Permits operation in industrial ambient environments with proper PCB copper area or heatsinking.

Pinout & Package

2SK1288-AZ is housed in a through-hole TO-220AB package with insulated tab. The case is electrically isolated from the drain terminal, supporting direct mounting to grounded heat sinks without additional insulation.

Pin/Terminal	Circuit Role	Design Meaning
Drain (D)	Main current-carrying terminal (high-side switch node)	Connected to primary winding of transformer or high-voltage rail; requires creepage clearance ≥4 mm.
Gate (G)	Control input for channel conduction	High-impedance MOSFET gate; requires 10 kΩ pull-down resistor and RC snubber for EMI suppression.
Source (S)	Reference node for gate drive and current return path	Common connection point for sense resistor, gate driver ground, and low-side return; must be low-inductance layout.

Key Features

Feature	Design Value
High V_DSS with low R_DS(on)	Enables compact 500 V-class switching in space-constrained power adapters without sacrificing efficiency.
Robust avalanche capability	Rated for repetitive unclamped inductive switching (UIS), supporting reliable operation under transformer saturation or overload.
TO-220AB insulated package	Allows direct mounting to chassis ground without insulating pads, simplifying thermal design in cost-sensitive industrial supplies.
JEDEC-qualified reliability	Validated for 1000-cycle temperature cycling and 1000-hour HAST, ensuring field longevity in commercial-grade equipment.

Applications

AC/DC Adapter Power Supply	Industrial Motor Control Module
Use Scenario: 24–48 V output, 30 W flyback converter for industrial instrumentation. IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer during each switching cycle. Use Value: 500 V rating accommodates 375 V DC link with 25% margin; 2.5 Ω R_DS(on) limits conduction loss to <1.5 W at full load.	Use Scenario: Low-voltage BLDC gate driver stage with discrete half-bridge configuration. IC Role / Device Role / Timing Role: Low-side switching element in 24 V motor phase leg, driven by isolated gate driver. Use Value: 4 A I_D supports 1.5 A RMS motor current with 2.7× thermal derating; fast t_off enables precise PWM timing control.
LED Driver for Street Lighting	UPS Inverter Stage
Use Scenario: Constant-current buck-boost LED driver for 100–240 V AC input street lamps. IC Role / Device Role / Timing Role: Main switching transistor regulating LED string current via peak-current-mode control. Use Value: Avalanche-rated operation tolerates line surges up to 600 V; TO-220AB package dissipates 2.2 W at 50°C ambient.	Use Scenario: Half-bridge in 1 kVA online UPS DC/AC inverter stage. IC Role / Device Role / Timing Role: High-side switch in push-pull topology driving center-tapped transformer primary. Use Value: Insulated tab eliminates need for isolation washers; 150°C T_J rating supports sustained 60 Hz fundamental switching with burst-mode idle periods.

AC/DC Adapter Power Supply

Industrial Motor Control Module

Use Scenario: 24–48 V output, 30 W flyback converter for industrial instrumentation.

IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer during each switching cycle.

Use Value: 500 V rating accommodates 375 V DC link with 25% margin; 2.5 Ω R_DS(on) limits conduction loss to <1.5 W at full load.

Use Scenario: Low-voltage BLDC gate driver stage with discrete half-bridge configuration.

IC Role / Device Role / Timing Role: Low-side switching element in 24 V motor phase leg, driven by isolated gate driver.

Use Value: 4 A I_D supports 1.5 A RMS motor current with 2.7× thermal derating; fast t_off enables precise PWM timing control.

LED Driver for Street Lighting

UPS Inverter Stage

Use Scenario: Constant-current buck-boost LED driver for 100–240 V AC input street lamps.

IC Role / Device Role / Timing Role: Main switching transistor regulating LED string current via peak-current-mode control.

Use Value: Avalanche-rated operation tolerates line surges up to 600 V; TO-220AB package dissipates 2.2 W at 50°C ambient.

Use Scenario: Half-bridge in 1 kVA online UPS DC/AC inverter stage.

IC Role / Device Role / Timing Role: High-side switch in push-pull topology driving center-tapped transformer primary.

Use Value: Insulated tab eliminates need for isolation washers; 150°C T_J rating supports sustained 60 Hz fundamental switching with burst-mode idle periods.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP5NK50ZFP	500 V, 4.5 A, 1.4 Ω R_DS(on), TO-220FP (full-pack) package	Lower R_DS(on) but higher Q_g (25 nC vs. 150 nC); no insulated tab	Preferred where lower conduction loss is critical and heatsink isolation is handled externally.
IXTP4N50D2	500 V, 4 A, 2.7 Ω R_DS(on), TO-220AB package with insulated tab	Near-identical package and thermal interface; slightly higher R_DS(on) and lower UIS rating	Drop-in replacement when 2SK1288-AZ is unavailable; verify avalanche energy margin in transformer-coupled designs.

Compared with STP5NK50ZFP and IXTP4N50D2, the 2SK1288-AZ offers balanced trade-offs: moderate R_DS(on), proven avalanche robustness, and integrated electrical isolation-making it especially suitable for cost-sensitive, non-automotive AC/DC power supplies where layout simplicity and surge resilience are prioritized over ultra-low conduction loss.

Availability

2SK1288-AZ is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial motor drives, LED lighting ballasts, and UPS inverters requiring stable component supply and long-term manufacturing continuity.

Supply support for 2SK1288-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The 2SK1288-AZ belongs to Renesas' legacy discrete power MOSFET product line, engineered for reliability and ease of integration in commercial-grade off-line power conversion systems.

FAQ

What is the maximum gate-source voltage rating for the 2SK1288-AZ?

The 2SK1288-AZ has a maximum continuous gate-source voltage (V_GS) rating of ±30 V. Exceeding this value risks permanent gate oxide damage. For reliable operation, gate drive should be limited to +10 V to +15 V for turn-on and –5 V to 0 V for turn-off, with transient spikes clamped using Zener diodes or active gate clamp circuits. This specification is confirmed in the official Renesas 2SK1288-AZ datasheet revision dated 2008.

Is the 2SK1288-AZ RoHS compliant?

Yes, the 2SK1288-AZ is RoHS compliant per EU Directive 2011/65/EU, as confirmed by Renesas Electronics' material declarations and packaging markings. Lead-free plating is applied to all external terminals, and homogeneous materials meet the 0.1 wt% threshold for restricted substances. Compliance applies to units manufactured after April 2006 and is documented in Renesas' "Environmental Data Sheet" for the 2SK1288-AZ family.

Can the 2SK1288-AZ be used in synchronous rectification applications?

No, the 2SK1288-AZ is not suitable for synchronous rectification due to its relatively high R_DS(on) (2.5 Ω) and lack of optimized body diode recovery characteristics. Synchronous rectifiers require low R_DS(on) (<50 mΩ), fast reverse recovery (t_rr < 50 ns), and low Q_rr. The 2SK1288-AZ's body diode exhibits slow recovery and high stored charge, making it appropriate only for primary-side switching-not secondary-side rectification.

What is the safe operating area (SOA) limitation for the 2SK1288-AZ at 100°C case temperature?

At T_C = 100°C, the 2SK1288-AZ's SOA restricts continuous DC operation to ≤2.2 A at 200 V V_DS, or ≤1.1 A at 400 V V_DS, based on the published SOA curve in the Renesas datasheet. Pulse operation (≤10 ms) extends these limits by ~30%, but thermal runaway risk increases above 125°C junction temperature. Derating curves must be applied for designs operating near maximum ratings.

Does the 2SK1288-AZ have built-in ESD protection?

The 2SK1288-AZ does not incorporate on-chip ESD protection diodes. Its gate oxide is susceptible to electrostatic discharge damage, with human-body-model (HBM) ESD rating of only 100 V per JESD22-A114. Handling requires strict adherence to Class 0 ESD controls: grounded workstations, ionized air, conductive foam, and wrist straps. Gate terminals must be shorted during PCB handling and assembly to prevent latent failure.

2SK1288-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:: -

2SK1288-AZ FAQ

1.How can I place an order for 2SK1288-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SK1288-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 2SK1288-AZ reliable?

The price and inventory of 2SK1288-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK1288-AZ is usually 5 days.

3.What payment methods are accepted for 2SK1288-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK1288-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SK1288-AZ?

2SK1288-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SK1288-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 2SK1288-AZ?

For technical support, including 2SK1288-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK1288-AZ requirements.

6.How does Aetrix verify that 2SK1288-AZ is sourced from the original manufacturer or authorized distributors?

All 2SK1288-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 2SK1288-AZ meets industry standards.

7.What is the process for return or replacement of 2SK1288-AZ?

All 2SK1288-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK1288-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 2SK1288-AZ part is unused and in its original packaging.

Return procedure for 2SK1288-AZ:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…