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

NXP Semiconductors BUK7L11-34ARC,127

Name: BUK7L11-34ARC,127
Brand: NXP Semiconductors
SKU: BUK7L11-34ARC,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7L11-34ARC,127

Manufacturer:: NXP Semiconductors

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK7L11-34ARC,127.pdf

Description:: MOSFET N-CH 34V 75A TO220AB

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Product details

Overview

BUK7L11-34ARC,127 from Nexperia (formerly Philips Semiconductors) is an N-channel TrenchMOS power transistor in TO-220 (SOT78C) package, rated for 34 V V_DS, 75 A continuous drain current at T_mb = 100 °C, and 8 mΩ typical R_DS(on) at V_GS = 10 V. It integrates internal gate resistor (11 Ω), ESD protection (8 kV HBM), and is AEC-Q101 qualified for automotive 12 V load switching including motors, lamps, and solenoids.

For engineers reviewing the BUK7L11-34ARC,127 datasheet, BUK7L11-34ARC,127 pinout, BUK7L11-34ARC,127 application, or BUK7L11-34ARC,127 equivalent, this page delivers verified thermal resistance (R_th(j-mb) = 0.55 K/W typ), avalanche energy rating (E_DS(CL)S = 465 mJ), clamping diode performance, and mounting-base temperature derating curves - all critical for high-reliability automotive power design.

Technical Context

This device uses TrenchPLUS standard-level MOSFET architecture optimized for low R_DS(on) and robust unclamped inductive switching. Its gate threshold voltage (V_GS(th) = 2.2–3.8 V at 25 °C) enables direct 5 V or 3.3 V logic-level drive without external level shifting, while integrated clamping diodes support fast turn-off with controlled voltage overshoot during inductive load commutation.

Thermal design centers on junction-to-mounting-base conduction (R_th(j-mb) = 0.55 K/W typ), requiring heatsink attachment to the insulated mounting base (electrically connected to drain). The 175 °C maximum junction temperature and Q101 qualification confirm suitability for under-hood automotive environments where sustained 100 °C+ ambient and thermal cycling are routine.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	34 V DC - Maximum drain-source blocking voltage; defines safe operation in 12 V automotive systems with load-dump transients up to 34 V.
R_DS(on)	8 mΩ typ @ V_GS = 10 V, T_j = 25 °C - Enables <1 W conduction loss at 35 A, critical for thermally constrained PCB layouts.
I_D cont	75 A @ T_mb = 100 °C - Package-limited continuous current; usable for high-duty-cycle motor drivers and lamp ballasts.
E_DS(CL)S	465 mJ - Non-repetitive clamped inductive energy handling; supports reliable switching of 60 A inductive loads without external snubbers.
R_th(j-mb)	0.55 K/W typ - Low thermal resistance to heatsink; allows >100 W dissipation with ≤55 K temperature rise from junction to mounting base.
V_ESD	8 kV HBM (C = 100 pF, R = 1.5 kΩ) - Robust ESD immunity eliminates need for external protection in assembly and field operation.
Q_g(tot)	53 nC - Total gate charge determines driver strength requirement; compatible with standard 1 A peak gate drivers.

Pinout & Package

Package: SOT78C (3-lead TO-220 plastic single-ended package with insulated mounting base; heatsink mounted; 1 mounting hole).

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal; accepts 0–20 V DC; internal 11 Ω gate resistor reduces ringing and simplifies driver layout.
2 (D)	Drain	Main power output; electrically tied to mounting base (mb); requires isolation from heatsink unless system ground reference permits.
3 (S)	Source	Power return path; referenced to control logic ground; source inductance (7.5 nH) impacts switching speed and dI/dt-induced voltage spikes.
Mounting Base (mb)	Drain connection	Electrically identical to Pin 2 (D); must be thermally coupled to heatsink but electrically isolated unless circuit topology permits common-drain configuration.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use per stress test requirements including temperature cycling, HTOL, and ESD - eliminates requalification effort for Tier 1 suppliers.
175 °C rated junction	Enables operation in engine bay environments with ambient up to 125 °C and transient peaks to 175 °C without derating.
Integrated clamping diodes	Provides built-in overvoltage protection during inductive turn-off; eliminates need for external TVS or Zener networks in lamp/motor drivers.
Internal gate resistor (11 Ω)	Reduces gate oscillation and EMI during switching; allows direct connection to microcontroller GPIO without external series resistor.
Low R_DS(on) × Q_g figure-of-merit	424 mΩ·nC - Balances conduction and switching losses for high-efficiency 12 V DC-DC and load-switching applications.

Applications

Automotive Body Control Module	Industrial 12 V Motor Driver
Use Scenario: Controlling headlamp, fog lamp, and interior lighting circuits in modern vehicle BCMs with PWM dimming and short-circuit diagnostics. IC Role / Device Role / Timing Role: High-side or low-side power switch managing up to 75 A peak inductive loads with integrated clamping and thermal shutdown signaling. Use Value: Eliminates discrete protection components and reduces PCB area by 30% versus discrete MOSFET + TVS + gate resistor solutions.	Use Scenario: Driving brushed DC motors in automated valves, HVAC actuators, and conveyor systems powered from 12 V industrial supplies. IC Role / Device Role / Timing Role: Main power stage switch with 53 nC gate charge enabling 20 kHz PWM operation using standard gate drivers. Use Value: 8 mΩ R_DS(on) limits conduction loss to <2 W at 50 A, reducing heatsink size and enabling fanless enclosure designs.
Automotive Solenoid Actuator	12 V Load Protection Switch
Use Scenario: Energizing fuel injectors, transmission solenoids, and ABS modulator valves requiring precise 10–100 ms pulse-width control. IC Role / Device Role / Timing Role: Fast-switching power switch with 20 ns turn-on delay and 118 ns fall time supporting accurate solenoid timing and current regulation. Use Value: Avalanche ruggedness (465 mJ) ensures reliable operation across 100,000+ actuation cycles without degradation.	Use Scenario: Replacing mechanical relays in battery management, accessory power distribution, and ignition-controlled subsystems. IC Role / Device Role / Timing Role: Solid-state replacement for 40 A automotive relays, offering silent operation, no contact wear, and programmable fault response. Use Value: 75 A continuous rating at 100 °C mounting base temperature enables direct drop-in replacement without thermal redesign.

Automotive Body Control Module

Industrial 12 V Motor Driver

Use Scenario: Controlling headlamp, fog lamp, and interior lighting circuits in modern vehicle BCMs with PWM dimming and short-circuit diagnostics.

IC Role / Device Role / Timing Role: High-side or low-side power switch managing up to 75 A peak inductive loads with integrated clamping and thermal shutdown signaling.

Use Value: Eliminates discrete protection components and reduces PCB area by 30% versus discrete MOSFET + TVS + gate resistor solutions.

Use Scenario: Driving brushed DC motors in automated valves, HVAC actuators, and conveyor systems powered from 12 V industrial supplies.

IC Role / Device Role / Timing Role: Main power stage switch with 53 nC gate charge enabling 20 kHz PWM operation using standard gate drivers.

Use Value: 8 mΩ R_DS(on) limits conduction loss to <2 W at 50 A, reducing heatsink size and enabling fanless enclosure designs.

Automotive Solenoid Actuator

12 V Load Protection Switch

Use Scenario: Energizing fuel injectors, transmission solenoids, and ABS modulator valves requiring precise 10–100 ms pulse-width control.

IC Role / Device Role / Timing Role: Fast-switching power switch with 20 ns turn-on delay and 118 ns fall time supporting accurate solenoid timing and current regulation.

Use Value: Avalanche ruggedness (465 mJ) ensures reliable operation across 100,000+ actuation cycles without degradation.

Use Scenario: Replacing mechanical relays in battery management, accessory power distribution, and ignition-controlled subsystems.

IC Role / Device Role / Timing Role: Solid-state replacement for 40 A automotive relays, offering silent operation, no contact wear, and programmable fault response.

Use Value: 75 A continuous rating at 100 °C mounting base temperature enables direct drop-in replacement without thermal redesign.

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
STP75NF34	Higher R_DS(on) (10.5 mΩ typ), no internal gate resistor, non-AEC-Q101 rated	Requires external gate resistor and ESD protection; not qualified for automotive production	Acceptable for cost-sensitive industrial prototypes but not for automotive OEM programs.
IRF1404ZLPbF	Lower V_DS rating (40 V), higher R_DS(on) (11 mΩ typ), no clamping diodes, non-Q101	Lacks integrated protection features; needs external TVS for inductive loads	Suitable for non-automotive 12 V systems where board space and reliability margins allow added discretes.

Compared with BUK7L11-34ARC,127, STP75NF34 and IRF1404ZLPbF lack AEC-Q101 qualification, integrated clamping, and internal gate resistance - making them less suitable for production automotive systems requiring zero-failure-rate power switching without additional protection circuitry.

Availability

BUK7L11-34ARC,127 is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drives, solenoid actuators, and 12 V load protection switches requiring stable component supply across multi-year production lifecycles.

Supply support for BUK7L11-34ARC,127 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on automotive, industrial, and mobile markets.

The BUK7L11-34ARC,127 belongs to Nexperia's TrenchPLUS automotive-qualified power MOSFET family, engineered specifically for robust 12 V load switching in harsh automotive environments with emphasis on thermal stability, avalanche ruggedness, and AEC-Q101 compliance.

FAQ

What is the maximum continuous drain current rating for BUK7L11-34ARC,127 at 100 °C mounting base temperature?

The BUK7L11-34ARC,127 supports 75 A continuous drain current at T_mb = 100 °C, limited by package thermal capacity rather than silicon capability. This value is confirmed in Table 3 (Limiting Values) of the official datasheet and reflects real-world derating for sustained operation in automotive under-hood conditions where heatsink temperature reaches 100 °C.

Does BUK7L11-34ARC,127 include integrated ESD protection, and what is its HBM rating?

Yes, BUK7L11-34ARC,127 includes on-chip ESD protection with a human-body-model (HBM) rating of 8 kV (C = 100 pF, R = 1.5 kΩ) and 6 kV (C = 250 pF, R = 1.5 kΩ), as specified in Table 3 of the datasheet. This eliminates the need for external ESD components in most automotive and industrial assembly environments.

Is BUK7L11-34ARC,127 qualified to AEC-Q101, and what does that mean for automotive use?

Yes, BUK7L11-34ARC,127 is explicitly AEC-Q101 qualified, as stated in Section 1.2 (Features) and validated through full stress testing including temperature cycling, high-temperature operating life, and ESD. This qualification certifies its reliability for automotive production applications such as body control modules and engine management subsystems.

What is the thermal resistance from junction to mounting base (R_th(j-mb)) for BUK7L11-34ARC,127, and why is it important?

The BUK7L11-34ARC,127 has a typical R_th(j-mb) of 0.55 K/W, with a maximum of 0.87 K/W, per Table 4. This low value enables efficient heat transfer from the die directly to the heatsink via the insulated mounting base - a critical parameter for designing compact, fanless automotive power stages operating at high ambient temperatures.

Can BUK7L11-34ARC,127 be driven directly from a 3.3 V microcontroller GPIO without a level shifter?

No - BUK7L11-34ARC,127 requires ≥10 V gate drive for full enhancement (R_DS(on) = 8 mΩ typ). Its V_GS(th) range is 2.2–3.8 V, but conduction losses become excessive below 10 V. A dedicated gate driver or level-shifting circuit is required when using 3.3 V or 5 V logic controllers to ensure reliable low-R_DS(on) operation.

BUK7L11-34ARC,127 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: TrenchMOS™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 34 V

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

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

Rds On (Max) @ Id, Vgs:: 11mOhm @ 30A, 10V

Vgs(th) (Max) @ Id:: 3.8V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 53 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2506 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 172W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

BUK7L11-34ARC,127 FAQ

1.How can I place an order for BUK7L11-34ARC,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7L11-34ARC,127 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 BUK7L11-34ARC,127 reliable?

The price and inventory of BUK7L11-34ARC,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7L11-34ARC,127 is usually 5 days.

3.What payment methods are accepted for BUK7L11-34ARC,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7L11-34ARC,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK7L11-34ARC,127?

BUK7L11-34ARC,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7L11-34ARC,127 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 BUK7L11-34ARC,127?

For technical support, including BUK7L11-34ARC,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7L11-34ARC,127 requirements.

6.How does Aetrix verify that BUK7L11-34ARC,127 is sourced from the original manufacturer or authorized distributors?

All BUK7L11-34ARC,127 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 BUK7L11-34ARC,127 meets industry standards.

7.What is the process for return or replacement of BUK7L11-34ARC,127?

All BUK7L11-34ARC,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7L11-34ARC,127, 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 BUK7L11-34ARC,127 part is unused and in its original packaging.

Return procedure for BUK7L11-34ARC,127:

1.Submit a request within 90 days.

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

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