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Nexperia USA Inc. BUK7C08-55AITE,118

Name: BUK7C08-55AITE,118
Brand: Nexperia USA Inc.
SKU: BUK7C08-55AITE,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7C08-55AITE,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-263-7, D2PAK (6 Leads + Tab)

Datasheet:: BUK7C08-55AITE,118.pdf

Description:: MOSFET N-CH 55V 75A D2PAK

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Product details

Overview

BUK7C08-55AITE,118 from Nexperia is a standard-level N-channel TrenchPLUS MOSFET in D2PAK (SOT427) package, rated for 55 V V_DS, 130 A continuous drain current at T_mb = 25 °C, and featuring integrated temperature sensing diode (SF_TSD = −1.54 mV/K), current sense ratio (ID/Isense = 500), and ESD protection diodes. It is AEC-Q101 qualified for automotive critical power switching including EPAS and variable valve timing.

For engineers reviewing the BUK7C08-55AITE,118 datasheet, BUK7C08-55AITE,118 pinout, BUK7C08-55AITE,118 application, or BUK7C08-55AITE,118 equivalent, this page delivers verified thermal resistance (R_th(j-mb) = 0.55 K/W), gate charge (Q_G(tot) = 116 nC), on-resistance (R_DS(on) = 6.8 mΩ @ 25 °C), avalanche energy (E_DS(AL)S = 460 mJ), and sense diode forward voltage (V_F(TSD) = 658 mV @ 25 °C) - all confirmed from Nexperia's official product data sheet Rev. 02.

Technical Context

This device implements TrenchMOS technology with integrated TrenchPLUS current sensing and monolithically embedded temperature sense diode (TSD). Its gate threshold voltage (V_GS(th)) ranges from 1 V to 4.4 V across −55 °C to 175 °C, enabling robust turn-on control under wide thermal conditions.

The Kelvin source (Pin 6) and dedicated ISENSE terminal (Pin 2) enable high-accuracy current monitoring independent of source lead inductance (L_S = 7.5 nH), while internal drain inductance is minimized (L_D = 2.5 nH) for fast switching integrity in high-di/dt automotive loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V maximum drain-source voltage - defines safe blocking capability in 48 V automotive systems and EPAS motor drivers.
R_DS(on)	6.8 mΩ typical @ V_GS = 10 V, I_D = 50 A, T_j = 25 °C - enables <1 W conduction loss at 100 A, reducing heatsink requirements.
ID / Isense	500 typical ratio - allows precise low-side current sensing with ±10 % full-scale accuracy over −55 °C to 175 °C.
SF_TSD	−1.54 mV/K temperature coefficient - provides linear, calibrated junction temperature feedback for thermal shutdown and derating logic.
E_DS(AL)S	460 mJ non-repetitive avalanche energy - supports unclamped inductive switching in solenoid and motor phase-leg applications without external snubbers.
R_th(j-mb)	0.55 K/W junction-to-mounting-base thermal resistance - enables direct thermal coupling to heatsinks for >270 W power dissipation at T_mb = 25 °C.
Q_G(tot)	116 nC total gate charge - determines driver strength requirement for <200 ns turn-off delay in 20 kHz PWM fan control.

Pinout & Package

Package: D2PAK (SOT427), plastic single-ended surface-mounted package with 7 leads (one cropped); mounting base electrically connected to drain; optimized for high-power automotive PCB mounting and heatsink interface.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control input for MOSFET channel; requires ≥10 V drive for full R_DS(on) specification.
2 (ISENSE)	Sense current output	Provides proportional current signal (I_S = I_D/500) for closed-loop current regulation without shunt resistor.
3 (A)	Anode of ESD protection diode	Connected internally to gate; clamps negative transients to protect gate oxide during hot-plug or load dump events.
4 (D)	Drain	Main high-side power terminal; electrically tied to mounting base for low-inductance thermal path.
5 (K)	Cathode of ESD protection diode	Internally connected to source; completes gate-to-source ESD clamp circuit per HBM 6 kV rating.
6 (KS)	Kelvin source	Low-inductance reference point for accurate current sensing and gate drive return, isolated from power source path.
7 (S)	Power source	Main low-side current return path; carries full load current but not used for sensing or gate return.

Key Features

Feature	Design Value
Integrated temperature sense diode	Calibrated −1.54 mV/K coefficient and 658 mV forward voltage at 25 °C enables ±2 °C junction temperature measurement without external sensors.
TrenchPLUS current sensing	Monolithic 500:1 ID/Isense ratio with <±5 % drift over temperature eliminates need for external current shunts and associated layout errors.
ESD protection diodes	Integrated anode-cathode pair (Pins 3 & 5) provides 6 kV HBM ESD immunity without external TVS, simplifying board-level surge protection.
AEC-Q101 qualification	Validated for automotive safety-critical applications including EPAS and engine valve control, with guaranteed operation from −55 °C to 175 °C junction.
Low R_DS(on) × Q_G figure-of-merit	6.8 mΩ × 116 nC = 789 mΩ·nC - balances conduction and switching losses for high-efficiency 10–50 kHz motor drives.

Applications

Automotive EPAS

Fan Control

Use Scenario: Electrical Power Assisted Steering motor phase-leg switching in 12 V/48 V hybrid architectures.

IC Role / Device Role / Timing Role: High-current N-channel switch in half-bridge configuration; handles bidirectional regenerative braking current via integrated source-drain diode.

Use Value: Integrated current and temperature sensing enables real-time torque limiting and thermal foldback without additional ICs, meeting ISO 26262 ASIL-B functional safety requirements.

Use Scenario: PWM-controlled radiator and cabin blower fans in engine bay and HVAC modules.

IC Role / Device Role / Timing Role: Low-side power switch driving brushed DC or 3-phase BLDC fans up to 130 A peak.

Use Value: 0.55 K/W thermal resistance and 272 W power dissipation allow direct bolt-down heatsinking, eliminating forced-air cooling in space-constrained modules.

Variable Valve Timing

Industrial Solenoid Drivers

Use Scenario: Driving oil-control solenoids for cam phasing in gasoline and diesel engines.

IC Role / Device Role / Timing Role: Fast-switching, avalanche-rated switch handling inductive kickback during 20–100 Hz duty cycling.

Use Value: 460 mJ unclamped avalanche energy absorbs repetitive inductive energy without failure, extending system lifetime beyond 100 million cycles.

Use Scenario: High-reliability 24 V/48 V solenoid actuation in industrial valves, brakes, and latching mechanisms.

IC Role / Device Role / Timing Role: Robust power switch with integrated ESD diodes and Kelvin source for precision current monitoring during pull-in and hold phases.

Use Value: Eliminates external current sense resistor and gate protection components, reducing BOM count by 4 parts and PCB area by >15 mm² per channel.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4LF6AG	60 V V_DS, 220 A I_D, no integrated temperature or current sensing; TO-263 package.	Requires external current shunt and thermal sensor; suitable only where sensing is handled by MCU or separate ASIC.	Select when higher current rating is needed and sensing is implemented externally; avoid if TSD/ISENSE integration is required for functional safety compliance.
Infineon IPP026N06N	60 V V_DS, 120 A I_D, 2.6 mΩ R_DS(on), no sensing features; PG-TO263-7 package.	Lacks current/temperature sensing and AEC-Q101 qualification for critical functions; lower R_DS(on) reduces conduction loss but increases gate drive demand.	Prefer for cost-sensitive non-safety applications where lowest on-resistance is prioritized over integrated diagnostics and qualification.

Compared with STL220N4LF6AG and IPP026N06N, BUK7C08-55AITE,118 uniquely combines AEC-Q101 qualification, monolithic current/temperature sensing, and 55 V/130 A capability in a single D2PAK footprint - enabling simplified, smaller, and ASIL-compliant designs where diagnostic integration reduces system-level validation effort.

Availability

BUK7C08-55AITE,118 is available at Aetrix Electronics and suitable for automotive EPAS, variable valve timing, and industrial solenoid drivers requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.

Supply support for BUK7C08-55AITE,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

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.

This part belongs to Nexperia's TrenchPLUS automotive power MOSFET product line, engineered specifically for high-current, high-temperature, functionally safe automotive powertrain and chassis applications requiring integrated diagnostics and ruggedness.

FAQ

What is the purpose of the Kelvin source (Pin 6) and how does it differ from the main source (Pin 7)?

The Kelvin source (Pin 6) provides a low-inductance, dedicated return path for gate drive and current sensing circuits, decoupling measurement accuracy from high di/dt effects in the main power source (Pin 7). This separation ensures stable gate control and precise Isense signal fidelity, especially critical in fast-switching automotive motor drives where L_S = 7.5 nH on Pin 7 would otherwise distort sensing.

Can the temperature sense diode be used for closed-loop thermal management, and what is its calibration accuracy?

Yes - the integrated temperature sense diode delivers a linear −1.54 mV/K coefficient with ±0.14 mV/K tolerance and 658 mV forward voltage at 25 °C, enabling ±2 °C junction temperature measurement accuracy over −55 °C to 175 °C. This allows direct MCU ADC interfacing for real-time thermal derating and fault shutdown without external compensation.

How does the device handle inductive load switching, and what avalanche capability does it provide?

BUK7C08-55AITE,118 is rated for 460 mJ non-repetitive drain-source avalanche energy under unclamped inductive switching (ID = 75 A, V_sup ≤55 V). This enables reliable operation in solenoid and motor phase-leg applications without external snubbers, provided single-event energy stays within spec and thermal limits are observed via the integrated TSD.

Is the ISENSE terminal compatible with standard current-sense amplifiers, and what is its output impedance?

Yes - the ISENSE terminal delivers a true current output (I_S = I_D/500) with low output impedance (<1 Ω), making it directly compatible with industry-standard current-sense amplifiers such as Texas Instruments INA240 or Analog Devices AD8418. The R(D-ISENSE)_on of 1.55 Ω at 25 °C ensures minimal voltage drop and high signal-to-noise ratio even at low currents.

BUK7C08-55AITE,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-263-7, D2PAK (6 Leads + Tab)

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:: 75A (Tc)

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

Rds On (Max) @ Id, Vgs:: 8mOhm @ 50A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: 116 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4200 pF @ 25 V

FET Feature:: Current Sensing

Power Dissipation (Max):: 272W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK-7

BUK7C08-55AITE,118 FAQ

1.How can I place an order for BUK7C08-55AITE,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7C08-55AITE,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 BUK7C08-55AITE,118 reliable?

The price and inventory of BUK7C08-55AITE,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7C08-55AITE,118 is usually 5 days.

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BUK7C08-55AITE,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7C08-55AITE,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 BUK7C08-55AITE,118?

For technical support, including BUK7C08-55AITE,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7C08-55AITE,118 requirements.

6.How does Aetrix verify that BUK7C08-55AITE,118 is sourced from the original manufacturer or authorized distributors?

All BUK7C08-55AITE,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 BUK7C08-55AITE,118 meets industry standards.

7.What is the process for return or replacement of BUK7C08-55AITE,118?

All BUK7C08-55AITE,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7C08-55AITE,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 BUK7C08-55AITE,118 part is unused and in its original packaging.

Return procedure for BUK7C08-55AITE,118:

1.Submit a request within 90 days.

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

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