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

Nexperia USA Inc. BUK9606-55A,118

Name: BUK9606-55A,118
Brand: Nexperia USA Inc.
SKU: BUK9606-55A,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK9606-55A,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

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

Datasheet:: BUK9606-55A,118.pdf

Description:: MOSFET N-CH 55V 75A D2PAK

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Product details

Overview

BUK9606-55A from Nexperia is a logic-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 55 V V_DS, 75 A continuous drain current at T_mb = 25 °C, and 175 °C junction temperature. It delivers 4.8 mΩ R_DS(on) at V_GS = 10 V and ID = 25 A, with Q101 automotive qualification for critical power switching in 12 V/24 V systems.

For engineers reviewing the BUK9606-55A datasheet, BUK9606-55A pinout, BUK9606-55A application, or BUK9606-55A equivalent, this device supports thermally demanding automotive load control where low gate drive voltage compatibility (V_GS = 4.5–5 V), avalanche ruggedness (1.1 J), and mounting-base thermal resistance (0.5 K/W) are essential selection criteria.

Technical Context

This MOSFET employs TrenchMOS technology to achieve low on-resistance and stable threshold voltage across temperature (V_GS(th) = 0.5–2.3 V, -55 to 175 °C). Its gate threshold is optimized for direct interface with 5 V microcontrollers and logic drivers without level-shifting circuitry.

The device integrates an intrinsic source-drain diode with 0.85 V forward voltage at 30 A and 80 ns reverse recovery time, enabling robust commutation in inductive loads. Thermal design centers on the mounting base (mb), which is electrically connected to the drain and provides a 0.5 K/W junction-to-base path for high-power dissipation up to 300 W.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum drain-source blocking voltage; defines safe operation in 24 V automotive systems with transient spikes.
I_D (continuous)	75 A at T_mb = 25 °C - Package-limited current rating; requires heatsinking to sustain full load in real-world mounting conditions.
R_DS(on)	5.3 mΩ max at V_GS = 5 V, I_D = 25 A, T_j = 25 °C - Enables <1.5 W conduction loss at 25 A, reducing thermal stress in compact PCB layouts.
T_j max	175 °C - Junction temperature limit supporting operation in under-hood environments without derating below ambient extremes.
E_AS	1.1 J non-repetitive avalanche energy - Withstands unclamped inductive switching events (e.g., solenoid de-energization) without failure.
R_th(j-mb)	0.5 K/W - Low thermal resistance path from die to mounting base enables efficient heat transfer to external heatsinks or copper planes.
V_GS(th)	1.5 V typ at T_j = 25 °C - Ensures reliable turn-on with standard 5 V logic outputs and maintains gate control down to 0.5 V at 175 °C.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal accepting 5 V logic-level signals; low input capacitance (6500 pF typ) enables fast switching with modest gate drive strength.
2 (D) / mb	Drain / Mounting Base	Main high-side power terminal and thermal interface; electrically common with mounting base for direct heatsink attachment and low-inductance high-current paths.
3 (S)	Source	Power return node; referenced to system ground in low-side switch configurations; internal source inductance is 7.5 nH.

Key Features

Feature	Design Value
Logic-level gate drive	Guaranteed turn-on at V_GS = 4.5 V, eliminating need for gate driver ICs in 5 V MCU-controlled applications.
AEC-Q101 qualified	Validated for automotive safety-critical functions including engine control, body electronics, and ADAS power stages.
175 °C junction rating	Supports uninterrupted operation in under-bonnet locations where ambient temperatures exceed 125 °C.
Low R_DS(on) @ 5 V	6.3 mΩ max at V_GS = 5 V ensures <1 W conduction loss at 20 A, minimizing board-level heating and improving efficiency.
Robust avalanche capability	1.1 J unclamped E_AS allows safe handling of inductive kickback from motors, solenoids, and lamps without external snubbers.

Applications

Engine Cooling Fan Control

Automotive Headlamp Switching

Use Scenario: PWM-controlled 12 V DC brushless fan motor in engine bay with ambient up to 125 °C.

IC Role / Device Role / Timing Role: Low-side power switch managing motor current; handles 40 A peak during startup and stall conditions.

Use Value: 5.3 mΩ R_DS(on) limits conduction loss to ≤8.5 W at 40 A, while 175 °C T_j rating prevents thermal shutdown during sustained high-load operation.

Use Scenario: High-beam headlamp activation in 24 V commercial vehicle lighting system with frequent on/off cycling.

IC Role / Device Role / Timing Role: High-side load switch (with external level shifter) delivering 15 A steady-state current to halogen bulbs.

Use Value: 1.1 J avalanche energy absorbs lamp filament inrush transients and hot-switching voltage spikes without degradation over 100,000 cycles.

Transmission Solenoid Driver

Electric Power Steering (EPS) Motor Phase Switch

Use Scenario: 12 V proportional solenoid actuator in automatic transmission valve body requiring precise current regulation.

IC Role / Device Role / Timing Role: Low-side current sink modulated via 20 kHz PWM; operates continuously at 10–30 A with tight thermal constraints.

Use Value: 0.5 K/W R_th(j-mb) enables direct mounting to aluminum housing, maintaining T_j < 150 °C even at 30 A with minimal heatsink area.

Use Scenario: One phase leg in 3-phase EPS motor inverter operating at 42 V nominal with regenerative braking.

IC Role / Device Role / Timing Role: Synchronous rectifier in H-bridge topology; conducts bidirectional current with integrated body diode.

Use Value: 80 ns t_rr and 200 nC Q_r minimize switching losses during freewheeling, improving inverter efficiency by ≥1.2% at 10 kHz PWM.

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
STL220N6F7	60 V V_DS, 220 A I_D, 1.8 mΩ R_DS(on) @ 10 V; TO-220FP package; no AEC-Q101 certification.	Higher current capacity but larger footprint and no automotive qualification; unsuitable for safety-critical modules.	Select only for non-automotive industrial 24 V loads where space and qualification are not constraints.
IRF1405ZLPbF	55 V V_DS, 162 A I_D, 5.3 mΩ R_DS(on) @ 10 V; TO-220AB package; legacy part with limited lifetime support.	Larger thermal resistance (R_th(j-c) ≈ 1.0 K/W); requires more aggressive heatsinking than D2PAK mounting base.	Use only for legacy redesigns where D2PAK footprint cannot be accommodated; verify long-term supply continuity.

Compared with STL220N6F7 and IRF1405ZLPbF, the BUK9606-55A offers superior automotive compliance, lower thermal resistance via D2PAK mounting base, and guaranteed 5 V gate drive performance-making it the optimal choice for new designs targeting AEC-Q101-compliant 12 V/24 V power switching.

Availability

BUK9606-55A is available at Aetrix Electronics and suitable for automotive body control modules, engine management subsystems, and industrial 24 V DC power distribution requiring stable component supply across extended production lifecycles.

Supply support for BUK9606-55A 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 specializing in high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-grade components and advanced packaging technologies.

The BUK9606-55A belongs to Nexperia's TrenchMOS logic-level power MOSFET product line, engineered specifically for automotive power switching applications requiring robustness, low gate drive voltage, and extended temperature operation.

FAQ

Is BUK9606-55A suitable for high-frequency PWM switching above 100 kHz?

No-its 6500 pF input capacitance and 420 ns turn-off delay time result in elevated switching losses above 50 kHz. It is optimized for 1–20 kHz motor/solenoid control, not high-frequency SMPS. For >100 kHz, consider Nexperia's NextPower series with lower C_iss and faster timing.

Can BUK9606-55A be used in high-side configuration without a gate driver?

No-its logic-level gate threshold does not eliminate the need for level shifting in high-side use. With V_DD = 24 V, the gate must reach ≥29 V to ensure full enhancement; a dedicated high-side driver (e.g., NX3003) is required for reliable operation.

What is the maximum allowable PCB copper area for thermal relief when using BUK9606-55A in D2PAK footprint?

Per Nexperia's thermal guidelines, a minimum 1000 mm² (e.g., 25 mm × 40 mm) of 2 oz copper connected directly to the mounting base is required to maintain T_j ≤150 °C at 75 A. Smaller areas require derating to ≤45 A continuous.

Does BUK9606-55A include integrated ESD protection on the gate?

No-the gate oxide is unprotected against human-body-model (HBM) ESD. External 10 kΩ gate resistor and 12 V Zener clamp (e.g., PESD5V0S1BA) are mandatory per Nexperia's layout recommendations to prevent gate rupture during handling or system transients.

BUK9606-55A,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):: 55 V

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

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 5.8mOhm @ 25A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±15V

Input Capacitance (Ciss) (Max) @ Vds:: 8600 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 300W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

BUK9606-55A,118 FAQ

1.How can I place an order for BUK9606-55A,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9606-55A,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 BUK9606-55A,118 reliable?

The price and inventory of BUK9606-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9606-55A,118 is usually 5 days.

3.What payment methods are accepted for BUK9606-55A,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9606-55A,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9606-55A,118?

BUK9606-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9606-55A,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 BUK9606-55A,118?

For technical support, including BUK9606-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9606-55A,118 requirements.

6.How does Aetrix verify that BUK9606-55A,118 is sourced from the original manufacturer or authorized distributors?

All BUK9606-55A,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 BUK9606-55A,118 meets industry standards.

7.What is the process for return or replacement of BUK9606-55A,118?

All BUK9606-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9606-55A,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 BUK9606-55A,118 part is unused and in its original packaging.

Return procedure for BUK9606-55A,118:

1.Submit a request within 90 days.

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

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