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

Nexperia USA Inc. BUK952R8-30B,127

Name: BUK952R8-30B,127
Brand: Nexperia USA Inc.
SKU: BUK952R8-30B,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK952R8-30B,127

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK952R8-30B,127.pdf

Description:: MOSFET N-CH 30V 75A TO220AB

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Product details

Overview

BUK952R8-30B from NXP Semiconductors is a logic-level N-channel TrenchMOS FET in TO-220AB (SOT78A) package, designed for automotive-critical 12 V power switching. It delivers 75 A continuous drain current at T_mb = 25 °C, features 2.4 mΩ R_DS(on) at V_GS = 10 V and 25 °C, supports 5 V gate drive, and is qualified to AEC-Q101 with 175 °C junction rating.

For engineers reviewing the BUK952R8-30B datasheet, BUK952R8-30B pinout, BUK952R8-30B application, or BUK952R8-30B equivalent, this device serves as a high-current, thermally robust, automotive-grade MOSFET for direct logic-level control of motors, lamps, and solenoids without level-shifting circuitry.

Technical Context

This FET employs TrenchMOS technology to achieve low on-resistance and fast switching performance. Its gate threshold voltage (V_GS(th)) ranges from 1.1 V to 2.0 V at 25 °C, enabling reliable turn-on with standard 5 V microcontroller outputs, and maintains functional operation down to 0.5 V at 175 °C.

The device integrates an internal source-drain diode with 0.85 V forward voltage at 40 A and exhibits 109 ns reverse recovery time under defined conditions. Thermal resistance from junction to mounting base is 0.5 K/W, supporting high-power dissipation when heatsink-mounted.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V maximum - defines safe operating voltage ceiling for 12 V automotive systems with load dump transients
I_D (continuous)	75 A at T_mb = 25 °C - limited by TO-220AB package thermal capacity, not die capability
R_DS(on)	2.4 mΩ typ at V_GS = 10 V, 25 °C - enables <1.9 W conduction loss at 75 A, reducing heatsink requirements
R_DS(on) @ 5 V	2.4 mΩ typ at V_GS = 5 V, 25 °C - ensures full enhancement with standard logic-level drivers
P_tot	300 W at T_mb = 25 °C - reflects maximum steady-state power handling with ideal heatsinking
T_j max	175 °C - enables operation in under-hood environments without derating for temperature
Q_GD	35 nC typ - determines Miller plateau duration and influences switching speed and gate driver sizing

Pinout & Package

Package: TO-220AB (SOT78A), plastic single-ended package with heatsink-mounting base electrically connected to drain. Mounting base provides primary thermal path and mechanical anchoring.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal accepting 5 V logic-level signals; requires ≤10 Ω external gate resistor for optimal switching
2 (D)	Drain	Main high-side power path; internally bonded to mounting base for low-inductance thermal and electrical connection
3 (S)	Source	Power return node; referenced to system ground in low-side switch configurations

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive safety-critical applications including engine control and body electronics
Logic-level gate drive	Guaranteed turn-on with 5 V CMOS outputs, eliminating need for gate driver ICs in many designs
175 °C junction rating	Enables uninterrupted operation in high-ambient under-hood locations without thermal shutdown
Low R_DS(on) at 5 V	2.4 mΩ ensures minimal I²R losses even when driven directly from MCU GPIO pins
Avalanche ruggedness	2.3 J unclamped energy rating protects against inductive kickback during switching of motors/solenoids

Applications

Automotive Body Control Module

12 V DC Motor Drive

Use Scenario: Controlling door locks, window lifts, and seat adjusters in modern vehicles.

IC Role / Device Role / Timing Role: High-side or low-side power switch managing bidirectional current flow to brushed DC motors.

Use Value: 75 A rating handles motor stall currents; 175 °C rating survives cabin temperature extremes; AEC-Q101 compliance meets OEM reliability requirements.

Use Scenario: Driving radiator cooling fans, HVAC blowers, and fuel pumps in 12 V vehicle architectures.

IC Role / Device Role / Timing Role: Low-side switching element with integrated freewheeling diode for PWM-controlled motor speed regulation.

Use Value: 2.4 mΩ R_DS(on) minimizes heat generation during continuous 100% duty cycle; 2.3 J avalanche energy withstands back-EMF spikes.

LED Headlamp Power Switch

Industrial 12 V Load Bank

Use Scenario: Switching high-brightness LED arrays in adaptive front-lighting systems (AFS).

IC Role / Device Role / Timing Role: Fast-switching power stage enabling precise current control and dimming via PWM.

Use Value: 35 nC Q_GD supports efficient 1–20 kHz PWM operation; low gate charge reduces driver power consumption.

Use Scenario: Modular test equipment simulating automotive loads during ECU validation and battery testing.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays in programmable load banks requiring >50 A switching.

Use Value: TO-220AB package allows bolt-down heatsinking for sustained 75 A operation; 300 W P_tot enables extended thermal cycling tests.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N3LLH6	30 V, 220 A (package-limited), 1.7 mΩ R_DS(on) @ 10 V, DFN8 5×6 mm - no mounting base, surface-mount only	Requires PCB copper area for thermal management; unsuitable for bolted heatsinks or high-vibration environments	Select when board space is constrained and thermal design uses large copper pour instead of discrete heatsink.
IRF1404ZLPBF	40 V, 180 A, 3.4 mΩ R_DS(on) @ 10 V, TO-220AB - higher V_DS, higher R_DS(on), not AEC-Q101 qualified	Lacks automotive qualification and 5 V logic-level optimization; higher conduction loss at same current	Select only for non-automotive industrial use where 40 V margin is required and AEC compliance is unnecessary.

Compared with STL220N3LLH6 and IRF1404ZLPBF, the BUK952R8-30B uniquely combines AEC-Q101 qualification, true 5 V logic-level drive, and TO-220AB bolt-mount thermal interface-making it the only choice for production automotive modules requiring reliability, simplicity, and serviceability.

Availability

BUK952R8-30B is available at Aetrix Electronics and suitable for automotive body control modules, 12 V motor drives, and LED headlamp power switching requiring stable component supply across multi-year vehicle production cycles.

Supply support for BUK952R8-30B 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

This device belongs to NXP's TrenchMOS automotive power portfolio, engineered specifically for high-reliability, high-current 12 V switching in harsh under-hood environments where AEC-Q101 compliance and thermal resilience are mandatory.

FAQ

Is BUK952R8-30B compatible with 3.3 V microcontroller GPIOs?

No. While its V_GS(th) starts at 1.1 V, full enhancement requires ≥4.5 V gate drive to achieve rated R_DS(on). At 3.3 V, R_DS(on) rises significantly-measured at ~3 mΩ minimum-increasing conduction loss and thermal stress. Use with 5 V logic or add a simple level shifter.

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

For 20 kHz PWM with acceptable switching losses, a 10 Ω gate resistor is recommended. This balances turn-on/turn-off times (typical t_d(on) = 71 ns, t_f = 195 ns) against gate driver current demand and EMI. Lower values increase peak gate current; higher values extend switching transitions and raise dynamic losses.

Can the mounting base be electrically isolated from the heatsink?

No. The mounting base is internally connected to the drain terminal. Electrical isolation requires insulating hardware (e.g., silicone washer + shoulder washer) and careful creepage/clearance layout. Failure to isolate may cause short circuits if heatsink is grounded and device is used in high-side configuration.

Does BUK952R8-30B include built-in ESD protection?

Yes. The device incorporates on-chip ESD protection rated per HBM (Human Body Model) to ±2 kV, as verified in AEC-Q101 stress testing. However, external TVS diodes are still recommended on gate and drain lines in automotive environments to handle ISO 10605 and ISO 7637-2 transients.

BUK952R8-30B,127 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

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):: 30 V

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

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

Rds On (Max) @ Id, Vgs:: 2.4mOhm @ 25A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: 89 nC @ 5 V

Vgs (Max):: ±15V

Input Capacitance (Ciss) (Max) @ Vds:: 10185 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

BUK952R8-30B,127 FAQ

1.How can I place an order for BUK952R8-30B,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK952R8-30B,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 BUK952R8-30B,127 reliable?

The price and inventory of BUK952R8-30B,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK952R8-30B,127 is usually 5 days.

3.What payment methods are accepted for BUK952R8-30B,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK952R8-30B,127 transactions.

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4.How is shipping managed for BUK952R8-30B,127?

BUK952R8-30B,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK952R8-30B,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 BUK952R8-30B,127?

For technical support, including BUK952R8-30B,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK952R8-30B,127 requirements.

6.How does Aetrix verify that BUK952R8-30B,127 is sourced from the original manufacturer or authorized distributors?

All BUK952R8-30B,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 BUK952R8-30B,127 meets industry standards.

7.What is the process for return or replacement of BUK952R8-30B,127?

All BUK952R8-30B,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK952R8-30B,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 BUK952R8-30B,127 part is unused and in its original packaging.

Return procedure for BUK952R8-30B,127:

1.Submit a request within 90 days.

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

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