Nexperia USA Inc. BUK763R4-30B,118

Overview

BUK763R4-30B,118 from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS standard-level power MOSFET in D2PAK (SOT404) package, designed for automotive-critical 12 V load switching. It delivers 75 A continuous drain current at T_mb = 25 °C, features 2.9 mΩ typical R_DS(on) at V_GS = 10 V and T_j = 25 °C, supports 175 °C junction operation, and provides 1.3 J non-repetitive avalanche energy - enabling robust control of motors, lamps, and solenoids in engine bays and chassis modules.

For engineers reviewing the BUK763R4-30B,118 datasheet, BUK763R4-30B,118 pinout, BUK763R4-30B,118 application, or BUK763R4-30B,118 equivalent, key selection criteria include its 30 V V_DS, thermally rugged D2PAK mounting base, gate-drive compatibility with standard 10 V logic, and validated performance under automotive thermal cycling and unclamped inductive switching stress.

Technical Context

This device implements a trench-gate vertical DMOS structure optimized for low conduction loss and high avalanche ruggedness. Its gate threshold voltage (2–4 V at T_j = 25 °C) ensures reliable turn-on with standard microcontroller GPIOs, while the 75 nC total gate charge enables efficient switching at frequencies up to 100 kHz in PWM-driven loads.

The integrated source-drain diode exhibits 0.85 V forward voltage at 25 A and 25 °C, with 70 ns reverse recovery time and 58 nC recovered charge - supporting freewheeling in inductive circuits without external catch diodes in many 12 V automotive applications.

Key Specifications

Pinout & Package

Package: D2PAK (SOT404), plastic surface-mounted package with isolated mounting base electrically connected to drain. Features three terminals: Gate (pin 1), Drain (pin 2 + mounting base), Source (pin 3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL220N3LLH6 and IRF3205PBF, BUK763R4-30B,118 uniquely combines AEC-Q101 compliance, 175 °C operation, 2.9 mΩ conduction loss, and 1.3 J avalanche ruggedness in a thermally optimized D2PAK package - making it the only drop-in solution for safety-critical 12 V automotive power switching where qualification, thermal stability, and transient robustness are mandatory.

Availability

BUK763R4-30B,118 is available at Aetrix Electronics and suitable for automotive engine control, brake-by-wire actuation, and body electronics requiring stable component supply across multi-year vehicle production lifecycles.

Supply support for BUK763R4-30B,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 essential semiconductors - delivering discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

This device belongs to Nexperia's Automotive Logic and Power portfolio, engineered specifically for AEC-Q101-compliant power switching in 12 V vehicle architectures - emphasizing thermal resilience, avalanche robustness, and gate-drive simplicity.

FAQ

Is BUK763R4-30B,118 suitable for high-frequency PWM applications?

Yes - with 75 nC total gate charge and 89 ns turn-off delay, it supports PWM frequencies up to 100 kHz in thermally managed designs. Its 23 nC gate-drain charge and 630 pF Crss minimize Miller-induced shoot-through risk in half-bridge configurations when paired with appropriate gate drivers and layout practices.

What is the maximum allowable mounting base temperature for continuous 75 A operation?

Per Figure 1 in the datasheet, continuous 75 A operation is limited to T_mb ≤ 25 °C. At T_mb = 100 °C, the device supports 75 A only if pulse width is constrained per SOA curves; derating to ~45 A is required for DC operation at 100 °C mounting base temperature.

Does BUK763R4-30B,118 require a gate resistor for automotive EMI compliance?

Yes - a 10 Ω external gate resistor is recommended (per Figure 14 test conditions) to limit dV/dt and suppress ringing. This value balances switching speed (32 ns t_d(on)) with conducted EMI reduction, especially critical in CAN-bus proximity and infotainment-adjacent modules.

Can the mounting base be electrically isolated from the PCB ground plane?

No - the mounting base is internally connected to the drain terminal (pin 2). Isolation requires insulating hardware (e.g., ceramic washer, silicone pad) and careful creepage/clearance design. Direct soldering to a copper pour is standard practice for thermal performance, but that pour must be at drain potential.