Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Nexperia USA Inc. BUK9230-55A,118

Name: BUK9230-55A,118
Brand: Nexperia USA Inc.
SKU: BUK9230-55A,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BUK9230-55A,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: BUK9230-55A,118.pdf

Description:: MOSFET N-CH 55V 38A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,964

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BUK9230-55A from Nexperia is a logic-level N-channel TrenchMOS FET in DPAK (SOT428) package, rated for 55 V V_DS, 38 A continuous drain current at 25 °C mounting base temperature, and 175 °C junction operation. It delivers 23–27 mΩ R_DS(on) at V_GS = 10 V and is AEC-Q101 qualified for automotive power switching of 12 V/24 V loads including motors, lamps, and solenoids.

For engineers reviewing the BUK9230-55A datasheet, BUK9230-55A pinout, BUK9230-55A application, or BUK9230-55A equivalent, key selection criteria include logic-level gate drive compatibility (V_GS(th) = 1.0–2.0 V), thermal robustness (R_th(j-mb) = 1.7 K/W), avalanche energy rating (57.8 mJ), and automotive qualification status.

Technical Context

This device uses TrenchMOS technology to achieve low on-resistance with logic-level gate drive capability-enabling direct interface with 3.3 V or 5 V microcontrollers without level-shifting circuitry. Its gate threshold voltage (1.0–2.0 V typ at 25 °C) and low R_DS(on) ensure efficient conduction under thermally demanding conditions up to 175 °C junction temperature.

The integrated source-drain diode supports freewheeling in inductive loads, with V_SD = 0.85–1.2 V at 25 A and t_rr = 35 ns. Avalanche ruggedness is specified at 57.8 mJ (unclamped, ID = 34 A), supporting reliable operation in motor control and load dump scenarios.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V maximum drain-source voltage - defines safe blocking capability in 12 V/24 V automotive systems with transient overvoltage margin.
I_D (continuous)	38 A at T_mb = 25 °C - enables high-current switching of automotive solenoids, fans, and lighting without external heatsinking at moderate ambient.
R_DS(on)	23–27 mΩ at V_GS = 10 V, I_D = 15 A, T_j = 25 °C - minimizes conduction loss and self-heating during sustained load operation.
V_GS(th)	1.0–2.0 V typical at I_D = 1 mA - ensures full enhancement with standard 3.3 V or 5 V logic outputs, eliminating need for gate drivers.
R_th(j-mb)	1.7 K/W - enables effective heat transfer to PCB copper or heatsink via mounting base, critical for automotive under-hood thermal management.
E_AS	57.8 mJ non-repetitive avalanche energy - provides robustness against inductive kickback in motor and relay driving applications.
T_j max	175 °C - supports operation in high-temperature engine bay environments per AEC-Q101 Grade 0 requirements.

Pinout & Package

Package: SOT428 (DPAK), plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base (mb) electrically connected to drain terminal for enhanced thermal and electrical performance.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control input for MOSFET turn-on/turn-off; compatible with 3.3 V/5 V logic; low gate charge (Q_G ≈ 30 nC typ) enables fast switching.
2 (D)	Drain	Main high-side power path; internally bonded to mounting base for low-inductance, low-thermal-resistance connection to heatsink or PCB copper pour.
3 (S)	Source	Power return path and reference for gate drive; forms common node with load ground in low-side switch configuration.

Key Features

Feature	Design Value
Logic-level gate drive	V_GS(th) ≤ 2.0 V and R_DS(on) ≤ 30 mΩ at V_GS = 5 V - eliminates external level shifters and reduces BOM count in MCU-driven modules.
AEC-Q101 qualification	Qualified per stress test requirements for automotive Grade 0 (−40 °C to +175 °C) - enables use in safety-critical body electronics and power distribution units.
Thermal robustness	R_th(j-mb) = 1.7 K/W and T_j(max) = 175 °C - allows stable operation in under-hood locations with minimal thermal derating.
Avalanche energy rating	57.8 mJ unclamped E_AS - withstands repetitive inductive transients in motor control without external snubbers.
Low internal inductance	L_D = 2.5 nH, L_S = 7.5 nH - reduces voltage overshoot and ringing during high-di/dt switching in 12 V/24 V systems.

Applications

Automotive Body Control Module (BCM)

12 V DC Motor Driver

Use Scenario: Switching of door locks, window lifts, and HVAC actuators in vehicle body electronics.

IC Role / Device Role / Timing Role: Low-side power switch controlled by 5 V microcontroller GPIO with PWM capability.

Use Value: Direct logic-level drive eliminates gate driver ICs; 175 °C rating ensures reliability near engine compartment heat sources.

Use Scenario: Bidirectional control of small brushed DC motors in seat adjusters or mirror positioning.

IC Role / Device Role / Timing Role: Half-bridge low-side switch paired with complementary high-side device; handles 30 A peak currents.

Use Value: 57.8 mJ avalanche energy absorbs back-EMF during direction reversal; low R_DS(on) minimizes power loss at 25 A continuous.

LED Headlamp Power Stage

24 V Industrial Solenoid Driver

Use Scenario: High-current PWM dimming of LED arrays in adaptive front lighting systems (AFS).

IC Role / Device Role / Timing Role: Constant-current switch operating at 1–2 kHz PWM frequency with fast turn-on/turn-off times (t_r/t_f < 130 ns).

Use Value: Low C_iss (1294 pF typ) and fast switching reduce gate drive power; 1.7 K/W thermal resistance maintains LED current stability.

Use Scenario: On/off control of 24 V industrial pneumatic solenoids in factory automation equipment.

IC Role / Device Role / Timing Role: High-reliability power switch interfaced to PLC output stage; operates continuously at 85 °C ambient.

Use Value: AEC-Q101 qualification ensures long-term reliability under vibration and thermal cycling; 33 mΩ R_DS(on) at 4.5 V gate drive supports 24 V controller compatibility.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL120N5LF8AG	60 V V_DS, 120 A I_D, R_DS(on) = 3.2 mΩ @ 10 V - higher current rating but larger D²PAK package and higher gate charge (Q_G = 65 nC).	Targeted at higher-power motor drives; not drop-in due to different footprint and thermal interface.	Select when >50 A continuous current or lower R_DS(on) is required; verify PCB layout and gate drive strength.
IRLR024NPBF	55 V V_DS, 17 A I_D, R_DS(on) = 45 mΩ @ 10 V - smaller TO-220AB package, no mounting base, R_th(j-a) = 62 K/W.	Designed for general-purpose industrial switching; lacks AEC-Q101 qualification and automotive thermal robustness.	Acceptable for non-automotive 12 V loads where cost is prioritized over qualification and thermal performance.

Compared with STL120N5LF8AG and IRLR024NPBF, BUK9230-55A uniquely balances automotive qualification, DPAK thermal efficiency (R_th(j-mb) = 1.7 K/W), and logic-level drive in a compact surface-mount form-making it optimal for space-constrained, thermally aggressive BCM and lighting modules.

Availability

BUK9230-55A is available at Aetrix Electronics and suitable for automotive body control modules, 12 V/24 V motor drivers, and LED headlamp power stages requiring stable component supply across extended production lifecycles.

Supply support for BUK9230-55A 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 for automotive, industrial, and consumer applications, delivering high-performance, high-reliability discrete and logic devices.

BUK9230-55A belongs to Nexperia's TrenchMOS logic-level power FET product line, engineered specifically for automotive-grade power switching where direct microcontroller interface, thermal resilience, and AEC-Q101 compliance are mandatory.

FAQ

Is BUK9230-55A suitable for 3.3 V microcontroller gate drive?

Yes. With V_GS(th) as low as 1.0 V and R_DS(on) = 26–30 mΩ at V_GS = 5 V (and 33 mΩ at V_GS = 4.5 V), the device fully enhances using standard 3.3 V or 5 V logic outputs. Gate charge is 30 nC typical, enabling clean switching without external drivers in most low-frequency applications.

What is the role of the mounting base (mb) in the DPAK package?

The mounting base is electrically connected to the drain terminal and serves as the primary thermal path from die to PCB copper or heatsink. Its low R_th(j-mb) of 1.7 K/W significantly improves power dissipation capability compared to standard SO-8 or TO-220 packages, making it ideal for high-current automotive applications where board-level thermal management is critical.

Does BUK9230-55A include an integrated body diode? Can it be used for freewheeling?

Yes. It features a monolithic source-drain diode with V_SD = 0.85–1.2 V at 25 A and t_rr = 35 ns. This diode supports freewheeling in inductive loads like motors and solenoids. However, for high-efficiency or high-frequency PWM, an external Schottky diode may be preferred to reduce conduction loss and recovery losses.

How does the 57.8 mJ avalanche energy rating translate to real-world robustness?

This value represents unclamped inductive switching energy the device can absorb once without failure, measured at ID = 34 A, V_sup ≤ 55 V, and T_j(init) = 25 °C. In practice, it enables reliable operation in automotive motor control and relay driving where load dump or sudden current interruption generates high-voltage transients-reducing or eliminating the need for external clamping components.

BUK9230-55A,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 38A (Tc)

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

Rds On (Max) @ Id, Vgs:: 27mOhm @ 15A, 10V

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

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

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 1725 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 88W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

BUK9230-55A,118 FAQ

1.How can I place an order for BUK9230-55A,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9230-55A,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 BUK9230-55A,118 reliable?

The price and inventory of BUK9230-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9230-55A,118 is usually 5 days.

3.What payment methods are accepted for BUK9230-55A,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9230-55A,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9230-55A,118?

BUK9230-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9230-55A,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 BUK9230-55A,118?

For technical support, including BUK9230-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9230-55A,118 requirements.

6.How does Aetrix verify that BUK9230-55A,118 is sourced from the original manufacturer or authorized distributors?

All BUK9230-55A,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 BUK9230-55A,118 meets industry standards.

7.What is the process for return or replacement of BUK9230-55A,118?

All BUK9230-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9230-55A,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 BUK9230-55A,118 part is unused and in its original packaging.

Return procedure for BUK9230-55A,118:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…