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

Nexperia USA Inc. BUK9606-40B,118

Name: BUK9606-40B,118
Brand: Nexperia USA Inc.
SKU: BUK9606-40B,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK9606-40B,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: BUK9606-40B,118.pdf

Description:: MOSFET N-CH 40V 75A D2PAK

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Product details

Overview

BUK9606-40B,118 from Nexperia is a logic-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 40 V drain-source voltage, 75 A continuous drain current at T_mb = 25 °C, and 175 °C junction temperature. It delivers low on-resistance (5.7 mΩ typ at V_GS = 5 V, I_D = 25 A, T_j = 25 °C) and is AEC-Q101 qualified for automotive critical power switching.

For engineers reviewing the BUK9606-40B,118 datasheet, BUK9606-40B,118 pinout, BUK9606-40B,118 application, or BUK9606-40B,118 equivalent, this device supports high-current 12 V load control in thermally demanding environments-especially where logic-level gate drive (5 V compatible), avalanche ruggedness (494 mJ), and robust thermal performance (R_th(j-mb) = 0.74 K/W) are required.

Technical Context

This FET uses TrenchMOS technology to achieve low R_DS(on) while maintaining fast switching (t_d(on) = 43 ns, t_f = 92 ns) and low gate charge (Q_G(tot) = 44 nC, Q_GD = 17 nC). Its gate threshold voltage (V_GS(th) = 1.1–2.0 V) ensures reliable turn-on with standard 5 V microcontroller outputs.

The device integrates a robust body diode (V_SD = 0.85 V typ at I_S = 25 A) with fast reverse recovery (t_rr = 61 ns, Q_r = 57 nC), enabling efficient freewheeling in inductive loads like solenoids and motors without external diodes in many designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	40 V maximum - supports full 12 V automotive battery systems with margin for load dump transients.
I_D (continuous)	75 A at T_mb = 25 °C - enables high-power switching without external heatsink in moderate airflow.
R_DS(on)	5.7 mΩ typical at V_GS = 5 V - reduces conduction loss to ≤8.1 W at 75 A, easing thermal design.
E_AS	494 mJ non-repetitive avalanche energy - withstands unclamped inductive switching events common in motor/solenoid drives.
R_th(j-mb)	0.74 K/W - allows direct mounting to PCB copper or heatsink for efficient heat extraction from junction to base.
V_GS(th)	1.5 V typical - ensures full enhancement with 3.3 V or 5 V logic-level drivers, eliminating need for gate boosters.
Q_GD	17 nC - limits Miller-induced switching delay and improves controllability during hard commutation.

Pinout & Package

Package: D2PAK (SOT404), plastic single-ended surface-mounted package with 3 leads (lead 2 cropped); mounting base (mb) electrically connected to drain and serves as primary thermal path.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal; accepts 5 V logic-level drive; requires <10 Ω series resistance for optimal EMI and ringing control.
2 (D)	Drain	Not externally accessible - internally connected to mounting base; primary high-side power node and thermal interface.
3 (S)	Source	Power return path; referenced to system ground in low-side switch configuration; bond-wire inductance (L_S = 7.5 nH) affects switching behavior.
Mounting Base (mb)	Drain / Thermal Interface	Electrically tied to drain; must be soldered to large copper pour or heatsink for rated power dissipation (203 W).

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive safety-critical applications including engine control, lighting, and chassis systems.
175 °C junction rating	Enables operation in under-hood environments without derating in ambient up to 125 °C with proper thermal design.
Logic-level gate drive (V_GS(th) ≤ 2.0 V)	Direct compatibility with 3.3 V/5 V MCUs and ASICs-no level-shifting or gate driver IC required.
Low R_DS(on) at 5 V drive	5.7 mΩ typ eliminates need for paralleling devices in 12 V/50–75 A switching nodes.
Integrated avalanche ruggedness	494 mJ E_AS supports reliable operation in inductive load switching without external snubbers.

Applications

Automotive Lighting Control

Engine Management Solenoid Drive

Use Scenario: High-side switching of LED headlamps and daytime running lights in 12 V vehicle electrical architecture.

IC Role / Device Role / Timing Role: Power switch controlling current flow to lamp load; operates in DC or PWM mode up to 2 kHz.

Use Value: Low R_DS(on) minimizes heat generation in confined headlamp housings; AEC-Q101 compliance ensures reliability over 15-year vehicle lifetime.

Use Scenario: Driving fuel injector or idle air control solenoids requiring precise 12 V pulse-width modulated actuation.

IC Role / Device Role / Timing Role: Low-side switch enabling fast turn-off (t_f = 92 ns) and controlled current decay via integrated body diode.

Use Value: Fast recovery (t_rr = 61 ns) and low Q_r (57 nC) reduce energy loss and electromagnetic noise during solenoid deactivation.

12 V Battery-Powered Motor Control

Industrial HVAC Blower Fan Driver

Use Scenario: Bidirectional or unidirectional DC motor control in portable tools and e-bikes using H-bridge or half-bridge topology.

IC Role / Device Role / Timing Role: High-current power stage transistor handling peak currents up to 516 A (pulsed); used in low-side position.

Use Value: 75 A continuous rating and 203 W power dissipation support sustained motor stall conditions without thermal shutdown.

Use Scenario: On/off and speed-controlled blower fan in commercial HVAC units powered from 12 V auxiliary supply.

IC Role / Device Role / Timing Role: Thermally robust power switch mounted directly to metal chassis; handles frequent start-stop cycles and dust-laden thermal environments.

Use Value: 175 °C T_j rating and R_th(j-mb) = 0.74 K/W allow stable operation in enclosed enclosures exceeding 85 °C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4F7AG	40 V, 220 A (T_c = 25 °C), R_DS(on) = 1.45 mΩ @ V_GS = 10 V; requires 10 V gate drive for full rating; not AEC-Q101 qualified.	Higher current capacity but larger TO-263 package; suited for industrial UPS or solar charge controllers-not automotive.	Select when higher peak current and lower R_DS(on) are needed and AEC-Q101 is not mandated.
IRF1404ZLPbF	40 V, 180 A (T_c = 25 °C), R_DS(on) = 3.7 mΩ @ V_GS = 10 V; V_GS(th) = 2–4 V; not AEC-Q101 qualified; older planar process.	Larger footprint (TO-220AB); higher gate charge (Q_G = 110 nC); less suitable for high-frequency PWM in space-constrained automotive modules.	Choose only for legacy industrial designs where cost is prioritized over thermal efficiency and qualification.

Compared with STL220N4F7AG and IRF1404ZLPbF, the BUK9606-40B,118 uniquely balances AEC-Q101 compliance, 5 V logic-level drive, compact D2PAK footprint, and 0.74 K/W thermal resistance-making it the preferred choice for new automotive power modules where qualification, size, and thermal performance are jointly constrained.

Availability

BUK9606-40B,118 is available at Aetrix Electronics and suitable for automotive lighting control, engine management solenoid drive, and 12 V battery-powered motor control requiring stable component supply across production lifecycles.

Supply support for BUK9606-40B,118 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete, logic, and MOSFET solutions-originating from Philips and now part of Beijing JianGuang Asset Management Co., Ltd.

The BUK9606-40B,118 belongs to Nexperia's Automotive Logic-Level Power MOSFET product line, engineered specifically for AEC-Q101-compliant 12 V automotive power switching where low gate drive voltage, thermal resilience, and avalanche capability are essential.

FAQ

Is BUK9606-40B,118 suitable for high-frequency PWM motor control?

Yes-it supports PWM frequencies up to 20 kHz with minimal switching loss due to low Q_GD (17 nC) and fast transition times (t_r = 145 ns, t_f = 92 ns). However, layout must minimize source inductance (L_S = 7.5 nH) to avoid gate oscillation; use Kelvin source connection in critical designs.

What is the maximum safe operating temperature for continuous use?

The device is rated for continuous operation up to T_j = 175 °C. At T_mb = 100 °C, its continuous drain current is derated to 75 A (same as at 25 °C) per Figure 1. Sustained operation above T_mb = 125 °C requires thermal modeling to ensure junction temperature remains within limit.

Can BUK9606-40B,118 replace a standard 10 V gate MOSFET in an existing 5 V design?

Yes-its V_GS(th) (1.1–2.0 V) and R_DS(on) spec at V_GS = 5 V (5.7 mΩ typ) make it a drop-in replacement for many 10 V gate devices in 5 V logic-driven circuits, provided package footprint and thermal interface match. No gate driver redesign is needed.

Does the mounting base require electrical isolation from the PCB?

No-the mounting base is electrically connected to the drain (pin 2) and must be soldered directly to a copper pour or heatsink that is at drain potential. Isolation would compromise thermal performance and violate the device's Safe Operating Area (SOA) limits shown in Figure 3.

BUK9606-40B,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 40 V

Current - Continuous Drain (Id) @ 25°C:: 75A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 5mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 44 nC @ 5 V

Vgs (Max):: ±15V

Input Capacitance (Ciss) (Max) @ Vds:: 4901 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 203W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

BUK9606-40B,118 FAQ

1.How can I place an order for BUK9606-40B,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9606-40B,118 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 BUK9606-40B,118 reliable?

The price and inventory of BUK9606-40B,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9606-40B,118 is usually 5 days.

3.What payment methods are accepted for BUK9606-40B,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9606-40B,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9606-40B,118?

BUK9606-40B,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9606-40B,118 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 BUK9606-40B,118?

For technical support, including BUK9606-40B,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9606-40B,118 requirements.

6.How does Aetrix verify that BUK9606-40B,118 is sourced from the original manufacturer or authorized distributors?

All BUK9606-40B,118 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 BUK9606-40B,118 meets industry standards.

7.What is the process for return or replacement of BUK9606-40B,118?

All BUK9606-40B,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9606-40B,118, 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 BUK9606-40B,118 part is unused and in its original packaging.

Return procedure for BUK9606-40B,118:

1.Submit a request within 90 days.

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

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