Nexperia USA Inc. BUK9K17-60EX

Overview

BUK9K17-60EX from Nexperia is a dual N-channel logic-level MOSFET in LFPAK56D (SOT1205) package, rated for 60 V V_DS, 17 mΩ R_DS(on) at V_GS = 5 V and T_j = 25 °C, and qualified to AEC-Q101 for automotive use. It delivers 26 A continuous drain current at T_mb = 25 °C and supports thermally demanding applications up to 175 °C junction temperature.

For engineers reviewing the BUK9K17-60EX datasheet, BUK9K17-60EX pinout, BUK9K17-60EX application, or BUK9K17-60EX equivalent, key selection criteria include its dual-channel layout, true logic-level gate drive (V_GS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and low thermal resistance (R_th(j-mb) = 2.84 K/W).

Technical Context

This device integrates two independent N-channel TrenchMOS transistors in a single LFPAK56D package with shared mounting base and isolated source/gate/drain terminals. Its dual configuration enables space-efficient half-bridge or independent load switching without cross-conduction risk when properly driven.

The MOSFET features a true logic-level gate threshold (V_GS(th) = 0.5–2.45 V across –55 to 175 °C), enabling direct drive from 3.3 V or 5 V microcontrollers. Repetitive avalanche capability (E_AS = 64 mJ) and 175 °C-rated operation support robust performance in automotive solenoid and motor control transients.

Key Specifications

Pinout & Package

LFPAK56D (SOT1205) is a thermally enhanced surface-mount package with 8 leads and exposed copper mounting base for low R_th(j-mb). Dimensions: 4.7 × 3.5 × 1.3 mm (L × W × H), with 1.27 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BUK9K17-60EX, both alternatives lack native dual-channel integration and AEC-Q101 validation - making them unsuitable for space-constrained, thermally aggressive, or safety-critical automotive functions where channel independence and qualification are mandatory.

Availability

BUK9K17-60EX is available at Aetrix Electronics and suitable for automotive ECM valve drivers, HVAC blower motor controls, transmission solenoid interfaces, and ADAS camera power sequencing requiring stable component supply across extended temperature and lifecycle demands.

Supply support for BUK9K17-60EX 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 MOSFETs, ESD protection, and logic ICs.

BUK9K17-60EX belongs to Nexperia's Automotive Logic-Level MOSFET product line, engineered specifically for robust, space-efficient power switching in 12 V automotive subsystems where thermal resilience and AEC-Q101 compliance are non-negotiable.

FAQ

Is BUK9K17-60EX pin-compatible with other LFPAK56D dual MOSFETs?

No - BUK9K17-60EX uses a unique internal pin mapping (dual drain pins per FET, isolated sources and gates) that differs from generic LFPAK56D dual MOSFETs like BUK7K18-40E. Pin 1 is S1, pin 2 is G1, pin 3 is S2, pin 4 is G2, pins 5–6 are D2, and pins 7–8 are D1. Layout must follow the exact pinout in Table 2 of the datasheet.

What is the maximum safe operating frequency for PWM switching with BUK9K17-60EX?

Maximum practical PWM frequency depends on gate drive strength and load. With 5 Ω external gate resistor and 5 V drive, typical turn-on/off times are td(on) = 10.7 ns, tr = 20 ns, td(off) = 23 ns, tf = 19.2 ns - supporting clean switching up to ~2 MHz in low-inductance layouts. Thermal limits (P_tot = 53 W) constrain average power, not frequency directly.

Does BUK9K17-60EX include integrated body diodes, and what are their characteristics?

Yes - each channel has an intrinsic source-drain diode. At I_S = 10 A and T_j = 25 °C, forward voltage is 0.78–1.2 V; reverse recovery time t_rr is 20.3 ns with recovered charge Q_r = 16.7 nC. These diodes support freewheeling in inductive loads but are not optimized for synchronous rectification.

Can BUK9K17-60EX be used in parallel configurations with identical devices?

Yes - its positive temperature coefficient for R_DS(on) (normalized factor increases with T_j, Fig. 12) enables inherent current sharing. However, layout symmetry (matched gate and source inductance) and individual gate resistors are essential to ensure balanced dynamic current distribution during switching transitions.