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

NXP Semiconductors BUK7523-75A,127

Name: BUK7523-75A,127
Brand: NXP Semiconductors
SKU: BUK7523-75A,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7523-75A,127

Manufacturer:: NXP Semiconductors

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK7523-75A,127.pdf

Description:: MOSFET N-CH 75V 53A TO220AB

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Product details

Overview

BUK7523-75A from Nexperia is a standard-level N-channel TrenchMOS power MOSFET in TO-220AB (SOT78A) package, designed for automotive-grade power switching with 75 V V_DS, 53 A continuous drain current at T_mb = 25 °C, and 49 mΩ R_DS(on) at T_j = 175 °C. It serves as a high-current, thermally robust load switch in 12 V/24 V vehicle subsystems including solenoid drivers and lamp controls.

For engineers reviewing the BUK7523-75A datasheet, BUK7523-75A pinout, BUK7523-75A application, or BUK7523-75A equivalent, this page delivers verified electrical specs, thermal derating curves, avalanche energy rating (120 mJ), gate drive compatibility (standard 10 V), and AEC-Q101 qualification status - all critical for automotive power stage design validation.

Technical Context

This device uses TrenchMOS technology to achieve low on-resistance while maintaining ruggedness under repetitive thermal cycling and unclamped inductive switching. Its gate threshold voltage ranges from 1 V (T_j = 175 °C) to 4.4 V (T_j = −55 °C), enabling stable turn-on across automotive temperature extremes.

The integrated source-drain diode exhibits 0.85 V forward voltage at 25 A and 25 °C, with 53 ns reverse recovery time and 144 nC recovered charge - parameters directly impacting commutation losses in relay or motor drive circuits. Thermal resistance from junction to mounting base is 1.1 K/W, supporting high-power operation when heatsink-mounted.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	75 V maximum drain-source voltage - defines safe blocking capability in 42 V automotive systems and transient-tolerant 12/24 V loads.
I_D (continuous)	53 A at T_mb = 25 °C - enables direct replacement of mechanical relays in high-current body electronics without forced air cooling.
R_DS(on)	17–23 mΩ at T_j = 25 °C; 49 mΩ at T_j = 175 °C - ensures <1.2 W conduction loss at 50 A, reducing thermal stress in sealed enclosures.
E_DS(AL)S	120 mJ non-repetitive avalanche energy - supports reliable operation during inductive load turn-off without external snubbers.
T_j max	175 °C maximum junction temperature - allows sustained operation in engine bay or under-hood environments.
V_GS(th)	2–4 V typical at 25 °C; 1 V min at 175 °C - ensures robust gate drive margin with standard microcontroller GPIO or dedicated driver ICs.
C_iss	1789–2385 pF input capacitance - determines required gate charge (Q_G ≈ 60 nC) and switching speed with 10 Ω external gate resistor.

Pinout & Package

TO-220AB (SOT78A) plastic single-ended package with heatsink-mounted mounting base electrically connected to the drain terminal. Requires mechanical fastening via single mounting hole; leads are tin-plated except for terminal zone near mounting base.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control electrode; accepts standard 10 V logic-level drive; gate leakage ≤100 nA ensures low standby current.
2 (D)	Drain	Main power output; internally bonded to mounting base - must be isolated from PCB ground unless drain-referenced topology is used.
3 (S)	Source	Power return path; referenced to control circuit ground; internal source inductance 7.5 nH affects high-speed switching ringing.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive safety-critical applications including engine control, lighting, and chassis systems per stress test requirements.
175 °C junction rating	Enables uninterrupted operation in under-hood environments where ambient temperatures exceed 125 °C.
Low R_DS(on) at high T_j	49 mΩ at 175 °C maintains efficiency in thermally constrained modules without derating to <30 A.
Standard-level gate drive	Operates fully enhanced with 10 V V_GS, eliminating need for level-shifters or charge pumps in 12 V system designs.
Unclamped avalanche ruggedness	120 mJ E_DS(AL)S withstands worst-case inductive kickback from solenoids or DC motors without failure.

Applications

Automotive Lamp Control	Engine Bay Solenoid Driver
Use Scenario: PWM-controlled headlamp or fog lamp switching in modern vehicle lighting modules. IC Role / Device Role / Timing Role: High-side or low-side power switch managing up to 50 A resistive load with thermal cycling over 10,000 cycles. Use Value: Eliminates relay wear-out and contact arcing; 49 mΩ R_DS(on) at 175 °C prevents thermal runaway during extended high-beam operation.	Use Scenario: Driving fuel injectors, turbocharger wastegate actuators, or transmission shift solenoids in powertrain ECUs. IC Role / Device Role / Timing Role: Fast-switching, avalanche-rugged load switch handling inductive kickback during 10–100 Hz duty cycling. Use Value: 120 mJ avalanche energy rating absorbs unclamped inductive energy without snubber components, reducing BOM count and layout area.
12 V/24 V Body Control Module	Industrial DC Motor Starter
Use Scenario: Centralized power distribution for door locks, window lifts, and seat adjusters in BCMs. IC Role / Device Role / Timing Role: Thermally stable main power switch operating continuously at 30–40 A with ambient up to 85 °C. Use Value: 1.1 K/W R_th(j-mb) enables direct heatsink mounting to metal chassis, avoiding costly thermal interface materials or fan cooling.	Use Scenario: Soft-start and direction control for 24 V brushed DC motors in factory automation conveyors or HVAC dampers. IC Role / Device Role / Timing Role: High-current H-bridge half-bridge element with fast 66 ns rise time and 41 ns fall time. Use Value: 213 A peak drain current (I_DM) supports motor stall currents; 53 A continuous rating sustains 1.5 HP loads without derating.

Automotive Lamp Control

Engine Bay Solenoid Driver

Use Scenario: PWM-controlled headlamp or fog lamp switching in modern vehicle lighting modules.

IC Role / Device Role / Timing Role: High-side or low-side power switch managing up to 50 A resistive load with thermal cycling over 10,000 cycles.

Use Value: Eliminates relay wear-out and contact arcing; 49 mΩ R_DS(on) at 175 °C prevents thermal runaway during extended high-beam operation.

Use Scenario: Driving fuel injectors, turbocharger wastegate actuators, or transmission shift solenoids in powertrain ECUs.

IC Role / Device Role / Timing Role: Fast-switching, avalanche-rugged load switch handling inductive kickback during 10–100 Hz duty cycling.

Use Value: 120 mJ avalanche energy rating absorbs unclamped inductive energy without snubber components, reducing BOM count and layout area.

12 V/24 V Body Control Module

Industrial DC Motor Starter

Use Scenario: Centralized power distribution for door locks, window lifts, and seat adjusters in BCMs.

IC Role / Device Role / Timing Role: Thermally stable main power switch operating continuously at 30–40 A with ambient up to 85 °C.

Use Value: 1.1 K/W R_th(j-mb) enables direct heatsink mounting to metal chassis, avoiding costly thermal interface materials or fan cooling.

Use Scenario: Soft-start and direction control for 24 V brushed DC motors in factory automation conveyors or HVAC dampers.

IC Role / Device Role / Timing Role: High-current H-bridge half-bridge element with fast 66 ns rise time and 41 ns fall time.

Use Value: 213 A peak drain current (I_DM) supports motor stall currents; 53 A continuous rating sustains 1.5 HP loads without derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP75NF75	75 V V_DS, 75 A I_D, but 14 mΩ R_DS(on) at 25 °C and only 150 °C T_j rating; not AEC-Q101 qualified.	Suitable for industrial motor drives but lacks automotive qualification and high-temperature stability.	Select only for non-automotive 24 V systems requiring higher current and lower R_DS(on) at room temperature.
IRFZ44NPBF	55 V V_DS, 49 A I_D, 28 mΩ R_DS(on) at 25 °C, 175 °C T_j, but no AEC-Q101 certification or published avalanche energy spec.	Acceptable for general-purpose 12 V switching where automotive reliability and inductive ruggedness are secondary.	Use only in cost-sensitive consumer or commercial equipment where AEC-Q101 and 75 V blocking are not required.

Compared with STP75NF75 and IRFZ44NPBF, the BUK7523-75A uniquely combines AEC-Q101 qualification, 75 V blocking, 175 °C operation, and documented 120 mJ avalanche capability - making it the sole choice for thermally demanding automotive power switching where reliability is non-negotiable.

Availability

BUK7523-75A is available at Aetrix Electronics and suitable for automotive lighting control, engine bay solenoid actuation, and 12 V/24 V body electronics requiring stable component supply across multi-year production cycles.

Supply support for BUK7523-75A 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 with deep expertise in automotive-qualified components.

The BUK7523-75A belongs to Nexperia's TrenchMOS standard-level power MOSFET family, engineered specifically for robust, high-current switching in automotive power distribution and actuation systems.

FAQ

What is the maximum continuous drain current rating for BUK7523-75A at elevated temperatures?

The BUK7523-75A delivers 53 A continuous drain current at mounting base temperature (T_mb) = 25 °C, derating to 37 A at T_mb = 100 °C per Figure 1 in the datasheet. This linear derating is enabled by its 1.1 K/W junction-to-mounting-base thermal resistance and 175 °C maximum junction temperature rating - critical for sustained operation in sealed automotive modules.

Is BUK7523-75A qualified for automotive applications?

Yes, the BUK7523-75A is explicitly AEC-Q101 qualified and designed for automotive critical applications, as stated in Section 1.1 of its product profile. It meets stress test requirements for temperature cycling, humidity, and mechanical shock, and is rated for operation from −55 °C to +175 °C - fulfilling requirements for engine control, lighting, and chassis systems.

What is the gate-source threshold voltage range for BUK7523-75A across temperature?

The BUK7523-75A has a gate-source threshold voltage (V_GS(th)) of 2–4 V at T_j = 25 °C, dropping to 1 V minimum at T_j = 175 °C and rising to 4.4 V maximum at T_j = −55 °C. This wide but predictable range ensures reliable turn-on with standard 10 V gate drive across full automotive temperature extremes without false triggering.

Does BUK7523-75A include an integrated body diode, and what are its key characteristics?

Yes, the BUK7523-75A integrates a source-drain diode with 0.85 V forward voltage at 25 A and 25 °C, 53 ns reverse recovery time, and 144 nC recovered charge. These values are measured under standardized conditions (IS = 46 A, dIS/dt = −100 A/µs, VDS = 30 V), directly influencing commutation losses in inductive load switching applications like motor or solenoid control.

What package type and thermal interface requirements apply to BUK7523-75A?

The BUK7523-75A uses the TO-220AB (SOT78A) package with the mounting base electrically connected to the drain. It requires mechanical fastening to an external heatsink; thermal resistance from junction to mounting base is 1.1 K/W. No thermal pad or solder is needed - direct metal-to-metal contact with thermal grease or phase-change material is sufficient for full-power operation.

BUK7523-75A,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):: 75 V

Current - Continuous Drain (Id) @ 25°C:: 53A (Tc)

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

Rds On (Max) @ Id, Vgs:: 23mOhm @ 25A, 10V

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

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

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2385 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 138W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

BUK7523-75A,127 FAQ

1.How can I place an order for BUK7523-75A,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7523-75A,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 BUK7523-75A,127 reliable?

The price and inventory of BUK7523-75A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7523-75A,127 is usually 5 days.

3.What payment methods are accepted for BUK7523-75A,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7523-75A,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK7523-75A,127?

BUK7523-75A,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7523-75A,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 BUK7523-75A,127?

For technical support, including BUK7523-75A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7523-75A,127 requirements.

6.How does Aetrix verify that BUK7523-75A,127 is sourced from the original manufacturer or authorized distributors?

All BUK7523-75A,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 BUK7523-75A,127 meets industry standards.

7.What is the process for return or replacement of BUK7523-75A,127?

All BUK7523-75A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7523-75A,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 BUK7523-75A,127 part is unused and in its original packaging.

Return procedure for BUK7523-75A,127:

1.Submit a request within 90 days.

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

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