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. BUK9222-55A,127

Name: BUK9222-55A,127
Brand: Nexperia USA Inc.
SKU: BUK9222-55A,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BUK9222-55A,127

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

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

Datasheet:: BUK9222-55A,127.pdf

Description:: MOSFET N-CH 55V 48A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,392

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

Product details

Overview

BUK9222-55A,127 from Nexperia is a logic-level N-channel TrenchMOS FET in DPAK (SOT428) package, rated for 55 V V_DS, 48 A continuous drain current at T_mb = 25 °C, and 175 °C junction temperature. It delivers 24 mΩ R_DS(on) at V_GS = 4.5 V and T_j = 25 °C, and is AEC-Q101 qualified for automotive power switching of 12 V/24 V loads including motors, lamps, and solenoids.

For engineers reviewing the BUK9222-55A datasheet, BUK9222-55A pinout, BUK9222-55A application, or BUK9222-55A equivalent, this device supports thermally demanding automotive environments, enables direct logic-level gate drive from microcontrollers or ASICs, and provides robust avalanche energy handling (160 mJ) for inductive load switching.

Technical Context

This FET uses TrenchMOS technology to achieve low on-resistance with logic-compatible gate drive (V_GS(th) = 1–2 V, typ. 1.5 V), enabling reliable turn-on with 3.3 V or 5 V controllers. Its mounting base (pin 2) is electrically connected to the drain, supporting low-inductance PCB layout and efficient thermal transfer to heatsinks.

The device features integrated source-drain diode (V_SD = 0.85–1.2 V at I_S = 25 A), fast reverse recovery (t_rr = 52 ns), and high avalanche ruggedness - critical for unclamped inductive switching in motor control and solenoid drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum drain-source blocking voltage; suitable for 24 V automotive systems with transient margin.
I_D (continuous)	48 A at T_mb = 25 °C - Sustained load current capability when mounted on adequately sized copper area or heatsink.
R_DS(on)	24 mΩ at V_GS = 4.5 V, T_j = 25 °C - Low conduction loss enabling <1.2 W dissipation at 5 A, reducing thermal design burden.
E_AS	160 mJ non-repetitive avalanche energy - Withstands inductive kickback without failure during relay or motor coil de-energization.
T_j max	175 °C - Enables operation in under-hood environments where ambient temperatures exceed 125 °C.
R_th(j-mb)	1.5 K/W - Junction-to-mounting-base thermal resistance; defines minimum heatsink requirement for power dissipation management.

Pinout & Package

Package: DPAK (SOT428), plastic single-ended surface-mounted package with 3 leads (lead 1 cropped); mounting base (mb) is integral to the package and electrically connected to the drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
1	Gate (G)	Control input; accepts logic-level drive (≥4.5 V) for full enhancement; low gate charge (Q_G typ. ~30 nC) enables fast switching.
2	Drain (D) / Mounting Base (mb)	Main power output node; electrically tied to large copper pad for thermal conduction and low-inductance high-current path.
3	Source (S)	Power return path; referenced to system ground; internal source inductance (L_S = 7.5 nH) impacts switching ringing in high-dI/dt applications.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive safety-critical functions including engine control, body electronics, and ADAS power stages.
Logic-level gate drive	V_GS(th) = 1–2 V ensures reliable turn-on with standard 3.3 V or 5 V MCU GPIOs without level-shifting circuitry.
175 °C junction rating	Supports sustained operation in high-ambient under-hood locations where conventional MOSFETs derate significantly.
Low R_DS(on) @ 4.5 V	24 mΩ enables high-efficiency 12 V/24 V load switching with minimal voltage drop and heat generation.
Integrated source-drain diode	V_SD = 0.85 V at 25 A allows freewheeling in H-bridge or single-FET inductive loads without external diode.

Applications

Automotive Body Control Module (BCM)

12 V/24 V DC Motor Driver

Use Scenario: Switching interior lighting, window lifters, and door locks in modern BCMs.

IC Role / Device Role / Timing Role: High-side or low-side power switch controlling resistive and inductive loads.

Use Value: AEC-Q101 compliance ensures long-term reliability across temperature cycling and vibration; 48 A rating supports multiple parallel loads per channel.

Use Scenario: Driving brushed DC fans, radiator cooling pumps, and HVAC blower motors.

IC Role / Device Role / Timing Role: Low-side switching element in PWM-controlled motor circuits.

Use Value: 160 mJ avalanche energy absorbs back-EMF during PWM turn-off, eliminating need for snubber networks.

Automotive Solenoid Actuator

Industrial 24 V Load Management

Use Scenario: Controlling fuel injectors, transmission shift solenoids, and ABS valve actuators.

IC Role / Device Role / Timing Role: Fast-switching power stage delivering precise current pulses to inductive coils.

Use Value: 52 ns reverse recovery time and low C_oss (290–346 pF) minimize switching losses and EMI during high-frequency actuation.

Use Scenario: Power distribution in industrial control panels for sensors, valves, and PLC I/O modules.

IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relays in DIN-rail mounted equipment.

Use Value: 1.5 K/W R_th(j-mb) enables direct mounting to metal chassis, simplifying thermal design versus TO-220 alternatives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP55NF06L-1	60 V V_DS, 50 A I_D, R_DS(on) = 14 mΩ @ 10 V; not AEC-Q101 qualified; TO-220 package.	Lacks automotive qualification; requires external heatsink; higher gate threshold (1–2.5 V) less robust at low V_GS.	Preferred for cost-sensitive industrial designs where qualification and surface-mount are not required.
IRF3205PBF	55 V V_DS, 110 A I_D, R_DS(on) = 8 mΩ @ 10 V; no AEC-Q101; TO-220; higher Q_G (71 nC).	Higher current rating but larger package and slower switching; unsuitable for space-constrained automotive PCBs.	Used where peak current >48 A is needed and thermal mass permits TO-220 mounting.

Compared with STP55NF06L-1 and IRF3205PBF, the BUK9222-55A uniquely combines AEC-Q101 qualification, DPAK surface-mount compatibility, and guaranteed 24 mΩ R_DS(on) at 4.5 V - making it the only option among the three qualified for production automotive electronics with logic-level drive constraints.

Availability

BUK9222-55A,127 is available at Aetrix Electronics and suitable for automotive body control modules, 12 V/24 V motor drives, and solenoid actuation requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for BUK9222-55A,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 focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.

The BUK9222-55A belongs to Nexperia's Automotive Logic-Level Power MOSFET product line, engineered specifically for robust, thermally efficient switching in 12 V and 24 V automotive power networks - emphasizing AEC-Q101 compliance, low R_DS(on) at logic voltages, and high-temperature resilience.

FAQ

Is BUK9222-55A,127 suitable for high-frequency PWM motor control?

Yes - with t_d(on) = 19 ns, t_r = 124 ns, t_d(off) = 92 ns, and t_f = 93 ns, it supports PWM frequencies up to 100 kHz in motor control. Its low C_iss (1660–2210 pF) and Crss (194–266 pF) reduce gate drive losses and improve switching efficiency at elevated frequencies.

What is the maximum continuous drain current at 100 °C mounting base temperature?

At T_mb = 100 °C and V_GS = 5 V, the maximum continuous drain current is 34 A, as specified in Table 4 (Limiting Values). This reflects thermal derating due to reduced heat dissipation capacity at elevated board temperatures.

Does the mounting base require electrical isolation from the PCB ground plane?

Yes - because the mounting base is internally connected to the drain (pin 2), it must be electrically isolated from any grounded copper pour unless the drain node is intentionally held at ground potential. Use insulated thermal pads or ceramic substrates when mounting to metal heatsinks.

Can BUK9222-55A,127 replace older BUK9222-55B variants in existing designs?

No - BUK9222-55A and BUK9222-55B differ in R_DS(on) specification and test conditions; the -55A version guarantees ≤24 mΩ at V_GS = 4.5 V, while the -55B may exhibit higher on-resistance. Design revalidation is required before substitution due to performance and qualification differences.

BUK9222-55A,127 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

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

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 48A (Tc)

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

Rds On (Max) @ Id, Vgs:: 20mOhm @ 25A, 10V

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

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

Vgs (Max):: ±15V

Input Capacitance (Ciss) (Max) @ Vds:: 2210 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 103W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

BUK9222-55A,127 FAQ

1.How can I place an order for BUK9222-55A,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9222-55A,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 BUK9222-55A,127 reliable?

The price and inventory of BUK9222-55A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9222-55A,127 is usually 5 days.

3.What payment methods are accepted for BUK9222-55A,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9222-55A,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9222-55A,127?

BUK9222-55A,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9222-55A,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 BUK9222-55A,127?

For technical support, including BUK9222-55A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9222-55A,127 requirements.

6.How does Aetrix verify that BUK9222-55A,127 is sourced from the original manufacturer or authorized distributors?

All BUK9222-55A,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 BUK9222-55A,127 meets industry standards.

7.What is the process for return or replacement of BUK9222-55A,127?

All BUK9222-55A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9222-55A,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 BUK9222-55A,127 part is unused and in its original packaging.

Return procedure for BUK9222-55A,127:

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…