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

NXP Semiconductors BUK7618-55/C,118

Name: BUK7618-55/C,118
Brand: NXP Semiconductors
SKU: BUK7618-55/C,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7618-55/C,118

Manufacturer:: NXP Semiconductors

Category:: FETs, MOSFETs

Package:: -

Datasheet:: BUK7618-55/C,118.pdf

Description:: N-CHANNEL TRENCHMOS LOGIC LEVEL

Quantity:: RFQ Add To RFQ list

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Inventory:2,000

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Product details

Overview

BUK7618-55/C,118 from NXP Semiconductors (formerly Philips) is an N-channel enhancement-mode TrenchMOS™ power transistor in SOT404 (D2-PAK) package, rated for 55 V drain-source voltage, 57 A DC drain current at 25 °C, and 18 mΩ R_DS(ON) at V_GS = 10 V. It integrates ESD protection up to 2 kV and is designed for high-current automotive load switching.

For engineers reviewing the BUK7618-55/C,118 datasheet, BUK7618-55/C,118 pinout, BUK7618-55/C,118 application, or BUK7618-55/C,118 equivalent, key selection criteria include its standard-level gate drive compatibility (10 V), low thermal resistance (1.2 K/W junction-to-mounting-base), and avalanche energy rating (125 mJ) for inductive load handling.

Technical Context

This MOSFET employs trench-gate technology to achieve low on-resistance and high current density. Its gate threshold voltage ranges from 2.0 V to 4.0 V at 25 °C, enabling reliable turn-on with standard logic-level drivers while maintaining noise immunity.

The device features integral zener diodes for ESD protection across all pins per HBM (100 pF/1.5 kΩ), and includes a reverse diode with 57 A continuous forward current capability and 48 ns reverse recovery time-critical for freewheeling in DC motor and solenoid control circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage for 12 V/24 V automotive systems with load-dump margin.
I_D (DC)	57 A at T_mb = 25 °C - Supports high-power loads like headlamps or HVAC blowers without forced cooling.
R_DS(ON)	18 mΩ at V_GS = 10 V - Minimizes conduction loss (≤1.0 W at 25 A), reducing heatsink requirements.
P_tot	125 W at T_mb = 25 °C - Enables high-power pulse operation in short-duration actuation cycles.
R_{th j-mb}	1.2 K/W - Allows direct mounting to PCB copper pour or heatsink for efficient thermal transfer.
Q_rr	0.1 µC - Low reverse recovery charge reduces switching losses and EMI in inductive switching.
W_DSS	125 mJ unclamped avalanche - Withstands single-pulse inductive energy without failure in relay or solenoid drive.

Pinout & Package

SOT404 (D2-PAK) package with exposed drain tab (pin 2 and mb) for thermal and electrical connection to mounting base; plastic body suitable for surface-mount reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
1	Gate	Control input requiring ≤1 µA leakage; driven by 10 V logic for full enhancement.
2 & mb	Drain	High-current output terminal electrically and thermally connected to mounting base.
3	Source	Reference node for gate drive; internal source inductance 7.5 nH affects high-speed switching.

Key Features

Feature	Design Value
TrenchMOS™ technology	Enables 18 mΩ R_DS(ON) in SOT404, improving power density over planar MOSFETs.
Integral Zener ESD protection	2 kV HBM rating eliminates need for external TVS diodes in board-level ESD design.
Low gate charge (Q_gd = 15 nC)	Reduces switching transition time and driver power dissipation in PWM applications.
Robust reverse diode	57 A continuous forward current and 48 ns t_rr support freewheeling in motor drives without external diode.
Avalanche-rated	125 mJ unclamped inductive turn-off energy allows safe operation in relay/solenoid snubberless designs.

Applications

Automotive Lighting Control	Engine Management Load Switching
Use Scenario: High-side switching of LED headlamps and fog lamps in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Power switch controlling lamp current with PWM dimming and overcurrent protection. Use Value: 18 mΩ R_DS(ON) limits conduction loss to <0.5 W at 15 A, enabling compact thermal design without active cooling.	Use Scenario: Driving fuel injectors, idle air control valves, and EGR solenoids in engine control units. IC Role / Device Role / Timing Role: Low-inductance, high-current switch with integrated freewheeling diode for inductive load commutation. Use Value: 48 ns reverse recovery time and 0.1 µC Q_rr minimize voltage spikes and EMI during valve de-energization.
Industrial Motor Starter	Commercial HVAC Blower Control
Use Scenario: Solid-state replacement for contactors in 24 V DC industrial conveyors and pumps. IC Role / Device Role / Timing Role: Main power switch with avalanche energy absorption during motor stall or sudden stop. Use Value: 125 mJ unclamped avalanche rating enables reliable operation under worst-case inductive fault conditions.	Use Scenario: Speed-controlled blower fan in rooftop HVAC units using 24–48 V DC supply. IC Role / Device Role / Timing Role: High-current PWM switch interfaced with microcontroller GPIO and gate driver. Use Value: 57 A DC rating supports peak currents >40 A during startup, eliminating need for parallel devices.

Automotive Lighting Control

Engine Management Load Switching

Use Scenario: High-side switching of LED headlamps and fog lamps in 12 V vehicle electrical systems.

IC Role / Device Role / Timing Role: Power switch controlling lamp current with PWM dimming and overcurrent protection.

Use Value: 18 mΩ R_DS(ON) limits conduction loss to <0.5 W at 15 A, enabling compact thermal design without active cooling.

Use Scenario: Driving fuel injectors, idle air control valves, and EGR solenoids in engine control units.

IC Role / Device Role / Timing Role: Low-inductance, high-current switch with integrated freewheeling diode for inductive load commutation.

Use Value: 48 ns reverse recovery time and 0.1 µC Q_rr minimize voltage spikes and EMI during valve de-energization.

Industrial Motor Starter

Commercial HVAC Blower Control

Use Scenario: Solid-state replacement for contactors in 24 V DC industrial conveyors and pumps.

IC Role / Device Role / Timing Role: Main power switch with avalanche energy absorption during motor stall or sudden stop.

Use Value: 125 mJ unclamped avalanche rating enables reliable operation under worst-case inductive fault conditions.

Use Scenario: Speed-controlled blower fan in rooftop HVAC units using 24–48 V DC supply.

IC Role / Device Role / Timing Role: High-current PWM switch interfaced with microcontroller GPIO and gate driver.

Use Value: 57 A DC rating supports peak currents >40 A during startup, eliminating need for parallel devices.

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
STP55NF06L	60 V V_DS, 55 A I_D, 14 mΩ R_DS(ON) at 10 V, TO-220 package	Larger footprint, higher thermal resistance (62 K/W junction-to-ambient), no integrated ESD protection	Preferred where higher voltage margin is needed and PCB space allows through-hole mounting.
IRFZ44NPBF	55 V V_DS, 49 A I_D, 28 mΩ R_DS(ON) at 10 V, TO-220 package	Higher on-resistance increases conduction loss; lacks avalanche rating and ESD protection	Suitable for cost-sensitive non-automotive applications where reliability margins are relaxed.

Compared with STP55NF06L and IRFZ44NPBF, the BUK7618-55/C,118 offers superior thermal performance (1.2 K/W vs. ≥60 K/W), integrated ESD protection, and verified avalanche capability-making it the preferred choice for space-constrained, high-reliability automotive and industrial switching.

Availability

BUK7618-55/C,118 is available at Aetrix Electronics and suitable for automotive lighting control, engine management load switching, and industrial motor starter applications requiring stable component supply and long-term production continuity.

Supply support for BUK7618-55/C,118 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, formerly Philips Semiconductors, is a global leader in high-performance analog and power semiconductor solutions, headquartered in Eindhoven, Netherlands.

The BUK7618-55/C,118 belongs to the TrenchMOS™ Standard Level FET product line, engineered specifically for robust, high-current switching in automotive and industrial environments where reliability, thermal efficiency, and ESD resilience are critical.

FAQ

What is the gate threshold voltage range for BUK7618-55/C,118?

The BUK7618-55/C,118 has a gate threshold voltage (V_GS(th)) of 2.0 V to 4.0 V at T_j = 25 °C and ID = 1 mA. At elevated temperature (175 °C), the minimum drops to 1.0 V, ensuring turn-on stability across automotive operating ranges. This standard-level threshold supports direct drive from 5 V or 3.3 V microcontrollers with appropriate gate buffering.

Does BUK7618-55/C,118 require external ESD protection?

No, the BUK7618-55/C,118 incorporates integral Zener diodes providing 2 kV electrostatic discharge protection per Human Body Model (100 pF/1.5 kΩ) on all pins. This eliminates the need for external TVS diodes in most automotive and industrial PCB layouts, simplifying design and reducing BOM count.

What is the maximum continuous drain current for BUK7618-55/C,118 at 100 °C mounting base temperature?

At T_mb = 100 °C, the BUK7618-55/C,118 supports a continuous drain current (I_D) of 40 A. This derating reflects thermal constraints and ensures safe operation without exceeding the 175 °C maximum junction temperature, making it suitable for sustained high-load conditions in engine bay environments.

Can BUK7618-55/C,118 be used in avalanche mode?

Yes, the BUK7618-55/C,118 is specified for unclamped inductive switching with a non-repetitive avalanche energy rating of 125 mJ at T_mb = 25 °C (ID = 50 A, V_DD ≤ 25 V). This enables reliable operation in solenoid, relay, and motor drive circuits where inductive kickback occurs without external snubbers.

What package type is used for BUK7618-55/C,118 and how is thermal management achieved?

The BUK7618-55/C,118 uses the SOT404 (D2-PAK) package with an exposed drain tab (pins 2 and mb) that serves as both electrical drain connection and primary thermal path. Its R_{th j-mb} of 1.2 K/W allows direct mounting to a copper pour or heatsink, enabling efficient heat extraction critical for high-power automotive applications.

BUK7618-55/C,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

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

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

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

Vgs (Max):: -

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

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

BUK7618-55/C,118 FAQ

1.How can I place an order for BUK7618-55/C,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7618-55/C,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 BUK7618-55/C,118 reliable?

The price and inventory of BUK7618-55/C,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7618-55/C,118 is usually 5 days.

3.What payment methods are accepted for BUK7618-55/C,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7618-55/C,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK7618-55/C,118?

BUK7618-55/C,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7618-55/C,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 BUK7618-55/C,118?

For technical support, including BUK7618-55/C,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7618-55/C,118 requirements.

6.How does Aetrix verify that BUK7618-55/C,118 is sourced from the original manufacturer or authorized distributors?

All BUK7618-55/C,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 BUK7618-55/C,118 meets industry standards.

7.What is the process for return or replacement of BUK7618-55/C,118?

All BUK7618-55/C,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7618-55/C,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 BUK7618-55/C,118 part is unused and in its original packaging.

Return procedure for BUK7618-55/C,118:

1.Submit a request within 90 days.

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

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