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

Nexperia USA Inc. BUK7909-75ATE,127

Name: BUK7909-75ATE,127
Brand: Nexperia USA Inc.
SKU: BUK7909-75ATE,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7909-75ATE,127

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-220-5

Datasheet:: BUK7909-75ATE,127.pdf

Description:: MOSFET N-CH 75V 75A TO220-5

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Product details

Overview

BUK7909-75ATE,127 from Nexperia is a standard-level N-channel TrenchPLUS MOSFET in TO-220 (SOT263B) package, rated for 75 V V_DS, 8 mΩ R_DS(on) at 10 V V_GS and 25 °C, and qualified to AEC-Q101 for automotive use. It integrates an ESD-protected temperature-sense diode (SF_TSD = −1.54 mV/K, V_F(TSD) = 658 mV @ 250 µA) and is used in high-current motor control circuits such as EPAS and variable valve timing.

For engineers reviewing the BUK7909-75ATE,127 datasheet, BUK7909-75ATE,127 pinout, BUK7909-75ATE,127 application, or BUK7909-75ATE,127 equivalent, key selection criteria include its 75 A continuous drain current capability at T_mb = 25 °C, integrated temperature sensing for closed-loop thermal management, and robust 6 kV HBM ESD rating - all critical for automotive power stage reliability.

Technical Context

This device implements a trench-gate MOSFET structure with monolithically integrated temperature-sense diode and ESD protection diodes. Its gate threshold voltage (V_GS(th)) ranges from 2–4 V at 25 °C and remains functional down to 1 V at 175 °C, enabling stable switching across automotive temperature extremes.

The FET features low parasitic inductance (L_D = 2.5 nH, L_S = 7.5 nH), fast switching (t_d(on) = 35 ns, t_f = 100 ns), and avalanche ruggedness of 739 mJ (unclamped, ID = 75 A), supporting reliable operation in inductive load commutation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	75 V maximum drain-source voltage - supports 48 V automotive systems with margin for transients.
R_DS(on)	8 mΩ typical at V_GS = 10 V, I_D = 50 A, T_j = 25 °C - enables <1 W conduction loss at 75 A.
I_D (cont)	75 A maximum continuous drain current limited by package - requires heatsink mounting per TO-220 footprint.
T_j range	−55 to +175 °C junction temperature - qualified for under-hood automotive environments.
V_F(TSD)	658 mV typical forward voltage at 250 µA, T_j = 25 °C - provides calibrated analog temperature feedback signal.
SF_TSD	−1.54 mV/K temperature coefficient - enables ±1.5 °C accuracy over −40 to +150 °C with proper biasing.
E_AS	739 mJ non-repetitive avalanche energy - sustains inductive kickback without failure in motor drive fault conditions.

Pinout & Package

Package: TO-220 plastic single-ended package (SOT263B), heatsink-mounted with 1 mounting hole and 5 leads. Mounting base (mb) is electrically connected to drain.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal for MOSFET switching; accepts standard-level 10 V logic drive.
2 (A)	Anode	Anode of integrated temperature-sense diode; used with external current source for thermal monitoring.
3 (D)	Drain	Main high-side power path; electrically tied to mounting base for thermal conduction.
4 (K)	Cathode	Cathode of integrated temperature-sense diode; referenced to source for differential sensing.
5 (S)	Source	Power return and reference node; connects to low-side driver ground and sense resistor.

Key Features

Feature	Design Value
Integrated temperature-sense diode	Calibrated −1.54 mV/K coefficient and 658 mV forward voltage enables real-time die temperature measurement without external sensors.
TrenchMOS technology	8 mΩ R_DS(on) at 10 V V_GS reduces conduction losses in high-current EPAS actuators and solenoid drivers.
ESD protection diodes	6 kV HBM rating ensures robustness against assembly and system-level electrostatic discharge events.
AEC-Q101 qualification	Validated for automotive safety-critical applications including power steering and engine valve control.
Low-inductance layout	2.5 nH internal drain inductance and 7.5 nH source inductance minimize voltage overshoot during fast switching.

Applications

Electrical Power Assisted Steering (EPAS)

Variable Valve Timing (VVT)

Use Scenario: High-current bidirectional motor phase switching in 12–48 V EPAS systems.

IC Role / Device Role / Timing Role: Main power switch in half-bridge configuration controlling torque assist motor winding current.

Use Value: Low R_DS(on) minimizes heat generation during sustained 50–75 A operation; integrated temperature sensing enables dynamic current derating.

Use Scenario: Solenoid actuation for cam phasing in gasoline/diesel engines.

IC Role / Device Role / Timing Role: High-side driver for oil-control valves requiring precise 10–20 ms pulse-width modulation.

Use Value: Fast turn-off delay (185 ns) and low Q_GD (44 nC) ensure accurate valve timing resolution; avalanche rating handles inductive flyback.

Engine Start-Stop Systems

Electric Turbocharger Actuation

Use Scenario: High-cycle battery-to-starter motor connection in micro-hybrid vehicles.

IC Role / Device Role / Timing Role: Load switch managing repeated 100+ A cranking pulses with thermal monitoring.

Use Value: 75 A continuous rating and 480 A peak current support rapid start-stop cycles; TSD diode prevents thermal runaway during frequent engagement.

Use Scenario: Precision control of wastegate or variable geometry vanes in 48 V electric turbochargers.

IC Role / Device Role / Timing Role: PWM-controlled power stage driving high-bandwidth vane position actuators.

Use Value: Low C_iss (4700 pF) and fast tr (108 ns) enable >20 kHz switching for smooth vane response; TO-220 package allows direct heatsink integration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4LF6AG	40 V V_DS, 1.2 mΩ R_DS(on), PowerFLAT 8x8 package, no integrated TSD	Limited to 24–36 V systems; lacks on-die temperature sensing	Select when lower R_DS(on) and surface-mount assembly are prioritized over thermal monitoring.
IRF1405ZPBF	55 V V_DS, 5.3 mΩ R_DS(on), TO-220, no AEC-Q101, no TSD	Not automotive-qualified; unsuitable for safety-critical EPAS/VVT	Only for cost-sensitive industrial motor drives where AEC-Q101 and TSD are not required.

Compared with STL220N4LF6AG and IRF1405ZPBF, BUK7909-75ATE,127 uniquely combines 75 V rating, AEC-Q101 qualification, and calibrated temperature-sense diode - making it the only option among the three for thermally managed, safety-compliant 48 V automotive power stages.

Availability

BUK7909-75ATE,127 is available at Aetrix Electronics and suitable for Electrical Power Assisted Steering (EPAS), Variable Valve Timing (VVT), and engine start-stop systems requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.

Supply support for BUK7909-75ATE,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 specializing in high-volume, high-reliability discrete, logic, and MOSFET solutions, with deep expertise in automotive-grade power components.

BUK7909-75ATE,127 belongs to Nexperia's TrenchPLUS automotive MOSFET product line, engineered specifically for high-current, thermally demanding automotive power control applications including steering, braking, and engine management.

FAQ

What is the function of pins 2 (A) and 4 (K) on the BUK7909-75ATE,127?

Pins 2 (A) and 4 (K) form the anode and cathode of an integrated silicon temperature-sense diode. When biased with a constant 250 µA current, the forward voltage drop (658 mV typ. at 25 °C) varies linearly with junction temperature at −1.54 mV/K, enabling direct die-temperature monitoring without external sensors.

Can the BUK7909-75ATE,127 be driven directly by a 3.3 V microcontroller GPIO?

No - the BUK7909-75ATE,127 is a standard-level MOSFET requiring ≥10 V V_GS for full enhancement (R_DS(on) = 8 mΩ). At 3.3 V, V_GS(th) is exceeded but the device operates in weak inversion, delivering only ~5 A with high R_DS(on); a gate driver or level shifter is mandatory for automotive-grade performance.

How is thermal resistance defined for this TO-220 package, and what does R_th(j-mb) = 0.55 K/W mean in practice?

R_th(j-mb) = 0.55 K/W is the thermal resistance from junction to mounting base - measured with the base soldered to a large copper heatsink. In practice, with a 272 W P_tot rating and 0.55 K/W, a 150 °C ΔT (e.g., T_j = 175 °C, T_mb = 25 °C) corresponds to ~273 W dissipation, confirming the datasheet's thermal limit under ideal heatsinking.

Is the BUK7909-75ATE,127 suitable for synchronous rectification in DC-DC converters?

No - while it has low R_DS(on), its body diode reverse recovery time (t_rr = 75 ns) and recovered charge (Q_r = 270 nC) are not optimized for high-frequency synchronous rectification. It is designed for hard-switched motor control, not soft-recovery SMPS topologies; dedicated sync-rectifier MOSFETs offer superior Q_rr and V_SD specs.

BUK7909-75ATE,127 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-220-5

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 75 V

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

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

Rds On (Max) @ Id, Vgs:: 9mOhm @ 50A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: 121 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 4700 pF @ 25 V

FET Feature:: Temperature Sensing Diode

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

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-5

BUK7909-75ATE,127 FAQ

1.How can I place an order for BUK7909-75ATE,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7909-75ATE,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 BUK7909-75ATE,127 reliable?

The price and inventory of BUK7909-75ATE,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7909-75ATE,127 is usually 5 days.

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BUK7909-75ATE,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7909-75ATE,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 BUK7909-75ATE,127?

For technical support, including BUK7909-75ATE,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7909-75ATE,127 requirements.

6.How does Aetrix verify that BUK7909-75ATE,127 is sourced from the original manufacturer or authorized distributors?

All BUK7909-75ATE,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 BUK7909-75ATE,127 meets industry standards.

7.What is the process for return or replacement of BUK7909-75ATE,127?

All BUK7909-75ATE,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7909-75ATE,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 BUK7909-75ATE,127 part is unused and in its original packaging.

Return procedure for BUK7909-75ATE,127:

1.Submit a request within 90 days.

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

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