Nexperia USA Inc. BUK7Y59-60EX

Overview

BUK7Y59-60EX from Nexperia is a standard-level N-channel MOSFET rated for 60 V drain-source voltage, 59 mΩ R_DS(on) at 10 V_GS and 5 A, and qualified to AEC-Q101 for automotive use. It delivers 17 A continuous drain current at 25 °C mounting base temperature, features true standard-level gate drive (V_GS(th) > 1 V at 175 °C), and operates up to 175 °C junction temperature in LFPAK56 (SOT669) package - deployed in transmission control and solenoid switching.

For engineers reviewing the BUK7Y59-60EX datasheet, BUK7Y59-60EX pinout, BUK7Y59-60EX application, or BUK7Y59-60EX equivalent, key selection criteria include its AEC-Q101 qualification, repetitive avalanche rating, 4.03 K/W junction-to-mounting-base thermal resistance, and compatibility with 12 V automotive power rails requiring robust thermal performance and gate-drive simplicity.

Technical Context

This MOSFET uses TrenchMOS technology to achieve low on-resistance while maintaining stable threshold voltage across temperature - V_GS(th) remains ≥1 V even at 175 °C, enabling reliable turn-on under high-temperature engine bay conditions. Its LFPAK56 package integrates a thermally enhanced mounting base directly connected to the drain, supporting high-power dissipation without external heatsinking.

The device supports unclamped inductive switching with 8.8 mJ non-repetitive avalanche energy and exhibits fast switching dynamics: 3.8 ns turn-on delay, 5.5 ns rise time, and 5.2 ns fall time under defined test conditions. Its Crss of 53–73 pF and Q_GD of 2.8 nC enable predictable Miller-effect behavior in high-frequency PWM motor control.

Key Specifications

Pinout & Package

BUK7Y59-60EX is housed in LFPAK56 (SOT669), a surface-mount plastic package with exposed drain mounting base for enhanced thermal transfer. The package features four terminals: three source pins (1–3), one gate pin (4), and the metal mounting base electrically connected to the drain.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL220N6F7 and IRF3205PBF, BUK7Y59-60EX uniquely balances AEC-Q101 compliance, standard-level gate compatibility, and LFPAK56 thermal efficiency - making it optimal for space-constrained, thermally demanding automotive body electronics where 5–17 A switching is required without external gate drivers.

Availability

BUK7Y59-60EX is available at Aetrix Electronics and suitable for automotive transmission control, engine cooling fan regulation, and headlamp beam switching requiring stable component supply across extended production lifecycles.

Supply support for BUK7Y59-60EX 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 and logic devices, with leadership in automotive-qualified components and advanced packaging.

BUK7Y59-60EX belongs to Nexperia's Automotive TrenchMOS portfolio, engineered specifically for robust, thermally efficient power switching in 12 V vehicle subsystems - emphasizing AEC-Q101 reliability, gate-drive simplicity, and board-level thermal integration.

FAQ

Is BUK7Y59-60EX suitable for high-side switching configurations?

Yes - its standard-level gate threshold (≥1 V at 175 °C) and 60 V V_DS rating support high-side use with appropriate gate driver biasing. The mounting base is internally connected to the drain, so PCB layout must isolate the base pad from source ground when used in high-side topology. Thermal design must account for elevated junction temperature under sustained load.

What is the maximum allowable pulsed drain current for BUK7Y59-60EX?

The peak drain current is specified as 67 A for pulses ≤10 µs at T_mb = 25 °C. This value is limited by single-pulse avalanche energy (8.8 mJ) and safe operating area constraints. For longer pulses or higher ambient temperatures, derating per Figure 4 (SOA curve) is required to avoid thermal runaway or avalanche-induced failure.

Does BUK7Y59-60EX require a gate resistor for automotive PWM applications?

A gate resistor is recommended to control dV/dt and prevent oscillation, especially at PWM frequencies above 20 kHz. Typical values range from 5 Ω to 22 Ω depending on driver strength and layout parasitics. The device's Q_G(tot) of 7.8 nC and Q_GD of 2.8 nC make it responsive to moderate-strength drivers without excessive power loss in the resistor.

How does the LFPAK56 package improve thermal performance over traditional SO-8?

LFPAK56 reduces R_th(j-mb) to 4.03 K/W versus ~6.5 K/W for standard SO-8 by integrating a thick copper mounting base directly bonded to the die drain. This provides a low-impedance thermal path to PCB copper, enabling 37 W power dissipation at T_mb = 25 °C - a 40 % improvement over SO-8 equivalents under identical board conditions.