Nexperia USA Inc. BUK9K12-60E/1X

Overview

BUK9K12-60E from Nexperia is a dual N-channel logic-level MOSFET in LFPAK56D (SOT1205) package, rated for 60 V V_DS, 11.5 mΩ R_DS(on) at 5 V V_GS and 25 °C, AEC-Q101 qualified, and rated for continuous operation up to 175 °C junction temperature - deployed in automotive transmission control and high-reliability 12 V power switching.

For engineers reviewing the BUK9K12-60E datasheet, BUK9K12-60E pinout, BUK9K12-60E application, or BUK9K12-60E equivalent, this page delivers verified electrical specs, thermal performance data, dual-FET layout context, and automotive-grade selection guidance without generic marketing language.

Technical Context

This device integrates two independent N-channel TrenchMOS transistors in a single LFPAK56D thermally enhanced package, sharing no internal connection between FET1 and FET2 - each features true logic-level gate drive (V_GS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and optimized dynamic parameters including 8.27 nC Q_GD and 24.5 nC Q_G(tot).

Its 2.21 K/W R_th(j-mb) enables high-power dissipation (68 W at T_mb = 25 °C) with minimal thermal derating, while the 175 °C maximum junction temperature and -55 °C to +175 °C storage range support under-hood automotive environments where thermal cycling and long-term reliability are critical.

Key Specifications

Pinout & Package

LFPAK56D (SOT1205) is a thermally optimized 8-lead surface-mount package with dual exposed drain pads (pins 5/6 = D2, pins 7/8 = D1) and separate source/gate terminals for independent FET control. Mounting base thermal path is integral to mechanical design.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL220N6F7 and NTMFS5C675NL, BUK9K12-60E uniquely combines dual-channel integration, 5 V logic compatibility, AEC-Q101 qualification, and 175 °C operation - making it the only option for space-constrained, thermally demanding automotive dual-switch applications requiring single-package simplicity and guaranteed qualification.

Availability

BUK9K12-60E is available at Aetrix Electronics and suitable for automotive transmission control, fuel injector driving, and electric power steering motor switching requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BUK9K12-60E 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 focused on high-volume, high-reliability discrete and logic components, with leadership in automotive-qualified MOSFETs and advanced packaging technologies.

The BUK9K series targets high-performance automotive power switching, delivering trench-based MOSFETs optimized for thermal robustness, logic-level drive, and AEC-Q101 compliance in engine bay and chassis control applications.

FAQ

Is BUK9K12-60E pin-compatible with other LFPAK56D dual-MOSFETs?

No - BUK9K12-60E uses a unique pinout (S1-G1-S2-G2-D2-D2-D1-D1) that differs from standard dual-channel LFPAK56D variants like BUK7K13-60E (which has S1-G1-D1-D1-D2-G2-S2-S2). PCB layout must match SOT1205 mechanical outline and terminal mapping exactly; no mechanical or electrical drop-in replacement exists.

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

Per Figure 2 in the datasheet, the continuous drain current is 35 A at T_mb = 25 °C and remains 35 A at T_mb = 100 °C - limited by package construction rather than silicon thermal limits. Derating begins above 100 °C, reaching ~22 A at T_mb = 150 °C.

Does BUK9K12-60E include integrated ESD protection on gate terminals?

Yes - the device specifies ±100 nA IGSS (gate leakage) at V_GS = ±10 V and T_j = 25 °C, indicating robust gate oxide integrity. While not explicitly rated per HBM/CDM standards in the datasheet, its AEC-Q101 qualification includes ESD stress testing per JESD22-A114 (HBM ≥ 2 kV) and JESD22-C101 (CDM ≥ 1 kV).

Can BUK9K12-60E be used in synchronous rectification applications?

Yes - its low R_DS(on) (11.5 mΩ), fast switching (t_f = 25.3 ns), and integrated body diode with t_rr = 22.6 ns and Q_r = 18.1 nC make it suitable for synchronous rectification in 12 V DC-DC converters, provided gate drive timing avoids shoot-through and layout minimizes common-source inductance.