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

NXP Semiconductors BUK7506-75B,127

Name: BUK7506-75B,127
Brand: NXP Semiconductors
SKU: BUK7506-75B,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7506-75B,127

Manufacturer:: NXP Semiconductors

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK7506-75B,127.pdf

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

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Product details

Overview

BUK7506-75B from Nexperia is a standard-level N-channel TrenchMOS FET in TO-220AB (SOT78A) package, rated for 75 V V_DS, 75 A continuous drain current at T_mb = 25 °C, and 300 W total power dissipation. It features 4.8–5.6 mΩ R_DS(on) at V_GS = 10 V and T_j = 25 °C, operates up to 175 °C junction temperature, and is AEC-Q101 qualified for automotive load switching.

For engineers reviewing the BUK7506-75B datasheet, BUK7506-75B pinout, BUK7506-75B application, or BUK7506-75B equivalent, key selection criteria include its 75 V breakdown voltage, low on-resistance under standard gate drive, thermal robustness in high-temperature mounting environments, and avalanche energy rating of 852 mJ.

Technical Context

This device uses TrenchMOS technology to achieve low conduction losses while maintaining compatibility with standard 10 V gate drive sources. Its drain-source breakdown voltage is guaranteed ≥75 V at T_j = 25 °C and ≥70 V at T_j = −55 °C, and it supports pulsed peak drain currents up to 638 A with tp ≤10 µs.

The integrated source-drain diode exhibits V_SD = 0.85–1.2 V at I_S = 40 A and T_j = 25 °C, with reverse recovery time t_rr = 86 ns and recovered charge Q_r = 253 nC under specified test conditions. Thermal resistance from junction to mounting base is 0.5 K/W, enabling efficient heatsink-coupled power handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	75 V - Maximum drain-source blocking voltage; ensures safe operation in 42 V automotive systems and transient-suppressed 12/24 V rails.
I_D (continuous)	75 A at T_mb = 25 °C - Package-limited current rating; derates to 0 A at T_mb ≈ 180 °C per Figure 1.
R_DS(on)	4.8–5.6 mΩ at V_GS = 10 V, I_D = 25 A, T_j = 25 °C - Enables <1.5 W conduction loss at 25 A, critical for thermally constrained motor/solenoid drivers.
E_AS	852 mJ - Non-repetitive unclamped avalanche energy at I_D = 75 A, V_sup ≤75 V - Supports inductive load switching without external snubbers in many automotive applications.
T_j max	175 °C - Maximum junction temperature rating - allows operation in engine bay or under-hood environments without derating for ambient temperature alone.
Q_G(tot)	91 nC - Total gate charge at V_DS = 60 V, I_D = 25 A - Determines required gate driver current for <100 ns switching transitions in high-frequency PWM control.
R_th(j-mb)	0.5 K/W - Junction-to-mounting-base thermal resistance - enables 300 W dissipation with ≤150 K temperature rise across heatsink interface.

Pinout & Package

BUK7506-75B is housed in a plastic single-ended TO-220AB package (SOT78A) with heatsink mounting via the metal mounting base, which is electrically connected to the drain terminal. The package has three leads and one mounting hole, optimized for high-power thermal management in automotive and industrial power stages.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control electrode; requires 10 V standard-level drive for full enhancement; gate leakage <100 nA at ±20 V.
2 (D)	Drain	Main high-side power terminal; electrically tied to mounting base; handles full load current and avalanche energy.
3 (S)	Source	Power return path; referenced for gate drive; internal source inductance 7.5 nH limits high-di/dt ringing.
Mounting base (mb)	Drain connection	Integral heatsink interface; provides lowest thermal impedance path (R_th(j-mb) = 0.5 K/W) and must be electrically isolated from PCB ground unless drain is grounded.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive critical applications including engine control, body electronics, and ADAS power stages.
Low R_DS(on) at standard gate drive	4.8–5.6 mΩ at V_GS = 10 V enables use with legacy 10 V microcontroller outputs without level-shifting circuitry.
175 °C maximum junction temperature	Supports reliable operation in thermally demanding locations such as near engines or in sealed enclosures without forced air cooling.
852 mJ avalanche energy rating	Allows safe interruption of inductive loads (e.g., solenoids, fuel injectors) without external clamping components in many designs.
TO-220AB mechanical robustness	Plastic single-ended package with mounting hole and heatsink-compatible base meets automotive vibration and thermal cycling requirements.

Applications

Automotive Load Switching	Industrial Motor Control
Use Scenario: High-side switching of 12 V/24 V solenoids, fuel injectors, and HVAC actuators in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Power switch controlling load activation/deactivation; operates in DC or low-frequency PWM mode with <100 ns turn-on delay. Use Value: AEC-Q101 qualification and 175 °C rating ensure reliability in under-hood environments; 75 A rating supports multi-solenoid banks without paralleling.	Use Scenario: DC motor direction and speed control in factory automation conveyors, pumps, and valve actuators. IC Role / Device Role / Timing Role: Half-bridge high-side switch in H-bridge configurations; handles bidirectional current via integrated source-drain diode during freewheeling. Use Value: 852 mJ avalanche ruggedness absorbs inductive kickback during PWM commutation; 0.5 K/W R_th(j-mb) sustains 300 W dissipation with passive heatsinking.
LED Lighting Power Stage	Power Distribution Unit (PDU)
Use Scenario: High-current LED array dimming and overcurrent protection in commercial vehicle lighting and off-road equipment. IC Role / Device Role / Timing Role: Constant-current regulator switch operating in linear or PWM mode; gate driven by MCU with 10 V output capability. Use Value: Low 4.8–5.6 mΩ R_DS(on) minimizes power loss and self-heating at 20–50 A LED loads; 75 V rating accommodates battery transients up to ISO 7637-2 Pulse 5a.	Use Scenario: Centralized 12 V/24 V power distribution with individual branch protection in marine, agricultural, and construction machinery. IC Role / Device Role / Timing Role: Electronic fuse replacement; monitors load current and shuts down within microseconds upon overcurrent detection. Use Value: Fast 36 ns turn-on delay and 48 ns fall time enable precise current limiting response; 638 A pulsed rating supports short-circuit withstand before protection triggers.

Automotive Load Switching

Industrial Motor Control

Use Scenario: High-side switching of 12 V/24 V solenoids, fuel injectors, and HVAC actuators in passenger vehicles and commercial trucks.

IC Role / Device Role / Timing Role: Power switch controlling load activation/deactivation; operates in DC or low-frequency PWM mode with <100 ns turn-on delay.

Use Value: AEC-Q101 qualification and 175 °C rating ensure reliability in under-hood environments; 75 A rating supports multi-solenoid banks without paralleling.

Use Scenario: DC motor direction and speed control in factory automation conveyors, pumps, and valve actuators.

IC Role / Device Role / Timing Role: Half-bridge high-side switch in H-bridge configurations; handles bidirectional current via integrated source-drain diode during freewheeling.

Use Value: 852 mJ avalanche ruggedness absorbs inductive kickback during PWM commutation; 0.5 K/W R_th(j-mb) sustains 300 W dissipation with passive heatsinking.

LED Lighting Power Stage

Power Distribution Unit (PDU)

Use Scenario: High-current LED array dimming and overcurrent protection in commercial vehicle lighting and off-road equipment.

IC Role / Device Role / Timing Role: Constant-current regulator switch operating in linear or PWM mode; gate driven by MCU with 10 V output capability.

Use Value: Low 4.8–5.6 mΩ R_DS(on) minimizes power loss and self-heating at 20–50 A LED loads; 75 V rating accommodates battery transients up to ISO 7637-2 Pulse 5a.

Use Scenario: Centralized 12 V/24 V power distribution with individual branch protection in marine, agricultural, and construction machinery.

IC Role / Device Role / Timing Role: Electronic fuse replacement; monitors load current and shuts down within microseconds upon overcurrent detection.

Use Value: Fast 36 ns turn-on delay and 48 ns fall time enable precise current limiting response; 638 A pulsed rating supports short-circuit withstand before protection triggers.

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, R_DS(on) = 10.5 mΩ @ 10 V - higher on-resistance than BUK7506-75B's 4.8–5.6 mΩ.	Less suitable for thermally constrained 25–50 A continuous loads due to higher conduction loss.	Select when cost sensitivity outweighs thermal performance; verify gate drive strength for 10 V threshold.
IRFZ44NPBF	55 V V_DS, 49 A I_D, R_DS(on) = 28 mΩ @ 10 V - lower voltage rating and significantly higher on-resistance.	Not suitable for 42 V automotive systems or high-current 24 V loads requiring <5 mΩ R_DS(on).	Consider only for non-automotive 12 V applications with relaxed voltage margin and thermal budget.

Compared with STP75NF75 and IRFZ44NPBF, the BUK7506-75B delivers superior thermal efficiency in automotive-grade 75 V switching due to its 4.8–5.6 mΩ R_DS(on), 175 °C rating, and AEC-Q101 qualification - making it the preferred choice where reliability under thermal stress and transient voltage exposure is mandatory.

Availability

BUK7506-75B is available at Aetrix Electronics and suitable for automotive load switching, industrial motor control, and LED lighting power stages requiring stable component supply and long-term lifecycle support.

Supply support for BUK7506-75B 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, formed in 2017 from the former NXP Standard Products business. It focuses on automotive, industrial, computing, consumer, and wearable markets.

The BUK7506-75B belongs to Nexperia's TrenchMOS standard-level PowerMOS family, engineered for robust, high-current switching in thermally demanding automotive and industrial environments with minimal gate drive complexity.

FAQ

What is the maximum continuous drain current rating for the BUK7506-75B?

The BUK7506-75B is rated for 75 A continuous drain current at mounting base temperature T_mb = 25 °C, limited by package thermal capacity. This rating decreases with rising T_mb, reaching zero at approximately 180 °C per Figure 1 in the datasheet. At T_mb = 100 °C, the continuous current is still 75 A, but power dissipation must remain within the derated P_tot limit.

Is the BUK7506-75B suitable for automotive applications?

Yes, the BUK7506-75B is AEC-Q101 qualified and designed specifically for automotive critical applications. It meets stringent reliability, temperature, and transient requirements for under-hood and chassis-mounted systems, including operation up to 175 °C junction temperature and robustness against load dump and jump-start transients.

What is the gate threshold voltage range for the BUK7506-75B?

The BUK7506-75B has a gate-source threshold voltage V_GS(th) of 2–4 V at T_j = 25 °C and 1–4.4 V across the full junction temperature range of −55 °C to 175 °C. This wide range ensures reliable turn-on with standard 10 V gate drive while maintaining noise immunity in noisy automotive electrical environments.

Does the BUK7506-75B have an integrated body diode, and what are its characteristics?

Yes, the BUK7506-75B includes an integrated source-drain diode with forward voltage V_SD = 0.85–1.2 V at I_S = 40 A and T_j = 25 °C. Its reverse recovery time t_rr is 86 ns and recovered charge Q_r is 253 nC under specified test conditions, supporting efficient freewheeling in inductive switching applications.

What package type does the BUK7506-75B use, and how is thermal management implemented?

The BUK7506-75B uses the TO-220AB (SOT78A) package, where the metal mounting base is electrically connected to the drain and serves as the primary thermal path. With a junction-to-mounting-base thermal resistance R_th(j-mb) of 0.5 K/W, effective heatsinking is achieved by bolting the mounting base to an external heatsink using the integrated mounting hole.

BUK7506-75B,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:: 75A (Tc)

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

Rds On (Max) @ Id, Vgs:: 5.6mOhm @ 25A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: 91 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 7446 pF @ 25 V

FET Feature:: -

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

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

BUK7506-75B,127 FAQ

1.How can I place an order for BUK7506-75B,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7506-75B,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 BUK7506-75B,127 reliable?

The price and inventory of BUK7506-75B,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7506-75B,127 is usually 5 days.

3.What payment methods are accepted for BUK7506-75B,127?

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4.How is shipping managed for BUK7506-75B,127?

BUK7506-75B,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7506-75B,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 BUK7506-75B,127?

For technical support, including BUK7506-75B,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7506-75B,127 requirements.

6.How does Aetrix verify that BUK7506-75B,127 is sourced from the original manufacturer or authorized distributors?

All BUK7506-75B,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 BUK7506-75B,127 meets industry standards.

7.What is the process for return or replacement of BUK7506-75B,127?

All BUK7506-75B,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7506-75B,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 BUK7506-75B,127 part is unused and in its original packaging.

Return procedure for BUK7506-75B,127:

1.Submit a request within 90 days.

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

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