Nexperia USA Inc. BUK966R5-60E,118

Overview

BUK966R5-60E from Nexperia is a logic-level N-channel TrenchMOS FET in SOT404 (D2PAK) package, rated for 60 V V_DS, 75 A continuous drain current at T_mb = 25 °C, and 5.34 mΩ R_DS(on) at V_GS = 5 V and T_j = 25 °C. It serves as a high-current power switch in automotive 12 V systems, supporting start-stop micro-hybrid control and transmission actuation under thermally demanding conditions up to 175 °C junction temperature.

For engineers reviewing the BUK966R5-60E datasheet, BUK966R5-60E pinout, BUK966R5-60E application, or BUK966R5-60E equivalent, this device is selected for its AEC Q101 qualification, repetitive avalanche rating, true logic-level gate drive (V_GS(th) > 0.5 V at 175 °C), low thermal resistance (R_th(j-mb) = 0.82 K/W), and robust 196 mJ single-pulse avalanche energy capability.

Technical Context

This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching with minimal gate charge (Q_G(tot) = 48 nC, Q_GD = 16.6 nC). Its gate threshold voltage remains functional across the full −55 °C to +175 °C junction range, enabling reliable turn-on with standard 5 V logic drivers even at extreme temperatures.

The device integrates a source-drain diode with 34 ns reverse recovery time and 44 nC recovered charge, supporting synchronous rectification and inductive load commutation. Mounting base (pin 4) is electrically connected to drain, requiring isolation-aware PCB layout and heatsinking design for safe operation at 182 W P_tot.

Key Specifications

Pinout & Package

SOT404 (D2PAK) plastic surface-mount package with 3 leads (one cropped) and integral mounting base (pin 4) electrically tied to drain. Requires thermal pad soldering to PCB copper pour or heatsink for rated power dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL220N6F7 and IRF1405ZPBF, BUK966R5-60E uniquely combines AEC Q101 compliance, true 5 V logic-level operation, SOT404 surface-mount packaging, and 175 °C junction rating-making it the only drop-in solution for production automotive control modules requiring zero gate-drive overhead and high thermal resilience.

Availability

BUK966R5-60E is available at Aetrix Electronics and suitable for engine start-stop control, transmission solenoid actuation, and 12 V battery disconnect switching requiring stable component supply across automotive production lifecycles.

Supply support for BUK966R5-60E 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 and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection solutions.

BUK966R5-60E belongs to Nexperia's TrenchMOS logic-level automotive power MOSFET product line, engineered specifically for thermally aggressive 12 V vehicle subsystems requiring AEC Q101 compliance and robust avalanche performance.

FAQ

Is BUK966R5-60E suitable for high-frequency PWM applications?

Yes - with 32 ns t_d(on), 75 ns t_r, 59 ns t_d(off), and 59 ns t_f, it supports clean switching up to 100 kHz in motor control and solenoid drive. Its 16.6 nC Q_GD and 48 nC Q_G(tot) minimize Miller effects, enabling stable operation with standard 5 V gate drivers without external negative turn-off bias.

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

Per Figure 2 in the datasheet, the continuous drain current is derated to 75 A at T_mb = 100 °C - identical to the 25 °C rating - because current is package-limited, not silicon-limited. This reflects the D2PAK's thermal design, where power dissipation (not current alone) governs safe operating area at elevated temperatures.

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

Yes - the mounting base is internally connected to the drain (pin 2), so it must be electrically isolated from all other PCB nets, including ground. Standard practice is to use a non-conductive thermal interface material or isolated copper pour with appropriate creepage/clearance spacing per automotive safety standards (e.g., ISO 26262).

Can BUK966R5-60E replace older BUZ11 or IRFZ44N devices in existing designs?

Yes - it offers superior R_DS(on) (5.34 mΩ vs. 28 mΩ for BUZ11), higher current (75 A vs. 30 A), AEC Q101 qualification, and 175 °C rating versus 150 °C. Pin-compatible with SOT404 footprint, but gate threshold behavior differs: BUK966R5-60E guarantees turn-on at 0.5 V, whereas BUZ11 requires ~2–4 V - verify MCU drive strength and logic compatibility before substitution.