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

Nexperia USA Inc. BUK763R4-30,118

Name: BUK763R4-30,118
Brand: Nexperia USA Inc.
SKU: BUK763R4-30,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK763R4-30,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: -

Datasheet:: BUK763R4-30,118.pdf

Description:: MOSFET N-CH 30V 75A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BUK763R4-30,118 from Nexperia is an AEC-Q101 qualified N-channel TrenchMOS FET in D2PAK (SOT404) package, designed for automotive-critical 12 V power switching. It delivers 75 A continuous drain current at 25 °C mounting base temperature, features 2.9 mΩ typical R_DS(on) at V_GS = 10 V and T_j = 25 °C, supports 175 °C junction operation, and provides 1.3 J non-repetitive avalanche energy - deployed in motor, lamp, and solenoid control within engine management and body electronics.

For engineers reviewing the BUK763R4-30,118 datasheet, BUK763R4-30,118 pinout, BUK763R4-30,118 application, or BUK763R4-30,118 equivalent, key selection criteria include its standard-level gate drive compatibility (V_GS(th) = 2–4 V), thermally robust 0.59 K/W junction-to-mounting-base thermal resistance, automotive qualification status, and D2PAK package's high-current capability with integrated drain-connected mounting base.

Technical Context

This device implements a trench-gate MOSFET structure optimized for low conduction loss and rugged unclamped inductive switching. Its gate threshold voltage (2–4 V at T_j = 25 °C) enables direct interface with 5 V and 3.3 V microcontrollers without level-shifting, while its 30 V V_DS rating targets 12 V automotive systems with transient margin.

Thermal design centers on the D2PAK's exposed drain mounting base, which serves as both high-current path and primary heat sink interface. The 0.59 K/W R_th(j-mb) enables high-power dissipation (255 W at T_mb = 25 °C), and the 175 °C maximum junction temperature supports under-hood environments where ambient exceeds 125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Supports 12 V automotive rail with ≥2× transient margin against load-dump spikes
I_D (continuous)	75 A at T_mb = 25 °C - Enables high-current loads like radiator fans or headlamp drivers without external heatsink
R_DS(on)	2.9 mΩ typ @ V_GS = 10 V, I_D = 25 A, T_j = 25 °C - Minimizes conduction loss to <0.55 W at 25 A, reducing thermal stress
Avalanche Energy E_DS(AL)S	1.3 J (unclamped, non-repetitive) - Withstands inductive kickback from solenoids and motors without external snubbers
T_j max	175 °C - Qualified for under-hood placement in engine control units and transmission modules
R_th(j-mb)	0.59 K/W - Enables efficient heat transfer to PCB copper or metal-core heatsink via mounting base
V_GS(th)	2–4 V @ I_D = 1 mA - Compatible with standard logic-level MCU GPIOs without gate driver IC

Pinout & Package

Package: D2PAK (SOT404), plastic surface-mount package with exposed drain mounting base; 3 leads (lead 2 cropped), lead-free and RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Controls channel conduction; requires ≤20 V absolute max; 75 nC total gate charge dictates moderate-speed switching with 10 Ω external resistor
2 (D)	Drain	Main high-current output terminal; electrically connected to mounting base for thermal and electrical integration
3 (S)	Source	Reference node for gate drive and current sensing; internal source inductance of 7.5 nH affects high-di/dt switching behavior
Mounting Base (mb)	Drain Extension	Exposed copper pad tied internally to drain; primary thermal path and mechanical anchor; must be soldered to large copper area or heatsink

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive safety-critical applications including engine control and braking subsystems
Standard-level gate drive	Operates fully enhanced with 5 V or 3.3 V logic outputs - eliminates need for dedicated gate driver ICs
175 °C junction rating	Enables placement in high-ambient zones (e.g., near exhaust manifolds or alternators) without derating
Low R_DS(on) × Q_G figure-of-merit	2.9 mΩ × 75 nC = 217.5 mΩ·nC - Balances conduction and switching losses for 10–100 kHz PWM motor control
Integrated source-drain diode	Forward voltage 0.85 V @ 25 A enables freewheeling in H-bridge and relay drive without external diode

Applications

Engine Cooling Fan Control

Headlamp Power Switching

Use Scenario: PWM-controlled DC brushless fan in engine bay, operating continuously at 85 °C ambient with 12 V supply.

IC Role / Device Role / Timing Role: High-side or low-side power switch managing up to 75 A peak current during startup surge.

Use Value: 2.9 mΩ R_DS(on) limits conduction loss to ≤16 W at full load, while 175 °C T_j rating ensures reliability without forced air cooling.

Use Scenario: Digital on/off switching of halogen or LED headlamps in body control module, subject to ISO 7637-2 pulse 5a transients.

IC Role / Device Role / Timing Role: Low-side switch interfacing directly with 3.3 V microcontroller GPIO pins.

Use Value: Standard-level V_GS(th) (2–4 V) guarantees turn-on with MCU logic levels; 30 V V_DS withstands 20 V load-dump events.

Transmission Solenoid Driver

Power Window Motor Interface

Use Scenario: Driving 12 V hydraulic solenoids in automatic transmission valve body, requiring precise current regulation and fault tolerance.

IC Role / Device Role / Timing Role: Current-regulated switch with integrated avalanche energy handling for inductive flyback suppression.

Use Value: 1.3 J unclamped avalanche rating absorbs energy from 75 A solenoid de-energization without external clamping diodes.

Use Scenario: Bidirectional H-bridge half-bridge element controlling reversible 12 V DC window lift motor in door module.

IC Role / Device Role / Timing Role: One quadrant of dual low-side switch; paired with identical device for direction control.

Use Value: Matching R_DS(on) (±15 %) between devices ensures balanced current sharing and prevents thermal runaway during stall conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel automotive power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N3LLH6	30 V, 220 A, 1.4 mΩ R_DS(on), PowerFLAT 5x6 package, 175 °C rated	Higher current capacity but smaller footprint; requires more complex PCB layout for thermal management	Select when board space is constrained and peak current exceeds 100 A; verify gate drive strength for 120 nC Q_G
IRF1404ZLPbF	40 V, 184 A, 3.7 mΩ R_DS(on), TO-220AB package, not AEC-Q101 qualified	Larger through-hole package; lacks automotive qualification; higher R_DS(on) increases conduction loss by ~28 %	Acceptable only for non-safety-critical industrial 12 V systems; avoid in OEM automotive designs due to missing AEC-Q101 validation

Compared with STL220N3LLH6 and IRF1404ZLPbF, BUK763R4-30,118 offers optimal balance of AEC-Q101 compliance, D2PAK thermal performance, and standard-level gate drive - making it the preferred choice for volume automotive ECUs where qualification, thermal reliability, and MCU compatibility are jointly critical.

Availability

BUK763R4-30,118 is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and industrial 12 V power distribution systems requiring stable component supply across multi-year production cycles.

Supply support for BUK763R4-30,118 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 essential semiconductors - high-volume, high-reliability, and automotive-grade discrete and logic devices.

BUK763R4-30,118 belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust 12 V load switching in harsh environments - emphasizing AEC-Q101 qualification, thermal resilience, and gate-drive simplicity.

FAQ

Is BUK763R4-30,118 pin-compatible with earlier BUK763R4-30B revisions?

Yes - BUK763R4-30,118 uses the same SOT404 (D2PAK) package and identical pin 1 (G), pin 2 (D), pin 3 (S) assignment as BUK763R4-30B. The ',118' suffix denotes tape-and-reel packaging per JEDEC standard J-STD-020, with no electrical or mechanical changes to the die or outline.

What is the maximum recommended gate resistor value for 20 kHz PWM switching?

For 20 kHz PWM with acceptable switching loss, a 10 Ω gate resistor is recommended based on 75 nC total gate charge and typical gate drive strength. This yields ~32 ns turn-on delay and ~64 ns rise time, keeping total switching energy below 15 mJ per cycle at 75 A/30 V.

Does the mounting base require electrical isolation from the PCB ground plane?

No - the mounting base is internally connected to the drain terminal. When used in low-side configuration, it must be isolated from system ground; in high-side configuration, it connects directly to the 12 V rail. Thermal interface material or solder must maintain electrical continuity per the application circuit topology.

Can BUK763R4-30,118 replace BUZ70 in existing designs?

No - BUZ70 is a 50 V, 15 A TO-220 device with 0.2 Ω R_DS(on). BUK763R4-30,118 operates at lower voltage (30 V) but delivers 5× higher current (75 A) and requires D2PAK layout. Direct replacement would necessitate PCB redesign, thermal analysis, and gate drive revalidation.

BUK763R4-30,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

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

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

Rds On (Max) @ Id, Vgs:: 3.4mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 4V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 75 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4951 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 255W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: -

Supplier Device Package:: -

BUK763R4-30,118 FAQ

1.How can I place an order for BUK763R4-30,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK763R4-30,118 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 BUK763R4-30,118 reliable?

The price and inventory of BUK763R4-30,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK763R4-30,118 is usually 5 days.

3.What payment methods are accepted for BUK763R4-30,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK763R4-30,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK763R4-30,118?

BUK763R4-30,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK763R4-30,118 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 BUK763R4-30,118?

For technical support, including BUK763R4-30,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK763R4-30,118 requirements.

6.How does Aetrix verify that BUK763R4-30,118 is sourced from the original manufacturer or authorized distributors?

All BUK763R4-30,118 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 BUK763R4-30,118 meets industry standards.

7.What is the process for return or replacement of BUK763R4-30,118?

All BUK763R4-30,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK763R4-30,118, 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 BUK763R4-30,118 part is unused and in its original packaging.

Return procedure for BUK763R4-30,118:

1.Submit a request within 90 days.

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

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